Best Car Seat for 3 Year Old Toddlers

If you’re looking for the best car seat for 3 year old kids, this guide is the right place.

What car seat should a 3 year old be in? Three year old children can drive both rear-facing and forward facing.

If your 3-year-old boy or girl does not outgrow the rear-facing weight or height limit, keep them rear-facing. 

However, it’s uncommon to see a 3 year old still in a rear-facing car seat. If the rear-facing car seat does not fit well and your child is not comfortable in it, it’s time to switch the car seats for 3 year olds to a forward-facing position

According to our experience and other CPS technicians we spoke to, the best seat for a 3 year old is the car seat with a 5-point harness

We’ve reviewed the top 15 car seats for 3 year olds based on safety, durability, comfort, ease of installation, and price.

35-40 Pounds

Best Car Seat for 5 Year Old Weighing from 35-40 Pounds

65-lb Maximum

Graco Extend2Fit Convertible Car Seat
Graco Extend2Fit

$211.99

65-lb Maximum

Chicco NextFit Zip Convertible Car Seat
Chicco NextFit Zip

$299.99

65-lb Maximum

Britax Marathon ClickTight Convertible Car Seat
Britax Marathon ClickTight

$299.99

65-lb Maximum

Safety 1st Jive Convertible Car Seat
Safety 1st Jive

$99.99

40-50 Pounds

Best Booster Car Seat for 5 Year Old Weighing from 40-50 Pounds

100-lb Maximum

Graco Tranzitions 2-in-1 Harness Booster
Graco Tranzitions

$109.99

100-lb Maximum

KidsEmbrace Spider Man Car Seat - 2-in-1 Harness Booster
KidsEmbrace

$149.99

120-lb Maximum

Britax Grow with You ClickTight Harness 2 Booster
Britax Grow with You ClickTight

$329.99

100-lb Maximum

Chicco MyFit Harness Booster
Chicco MyFit

$199.99

120-lb Maximum

Graco 4Ever DLX 4-in-1 Car Seat
Graco 4Ever DLX

$309.99

100-lb Maximum

Diono Radian 3R 3-in-1 Car Seat
Diono Radian 3R

$199.99

100-lb Maximum

Maxi-Cosi Pria All-in-1 Car Seat
Maxi-Cosi Pria

$299.99

To make it simple, we categorized the 15 best car seats for 3 year olds into three types of car seat – convertible, combination, and all-in-one. Just click on it below to find the one best fit your needs.

Convertible

Best for 3 Year Olds

Harnessed Booster

Best Booster for 3 Year Old

All-in-One

Best for 3 Year Olds

We also make lists of the best car seats for a 3 year old boy or girl according to the car seats’ performance (rear-/forward-facing/booster weight/height limits), budget, and by bonus features (like lightweight, portable for travel)

By Weight Limit

See Our Top Picks Organized by Weight Limits from 65 to 120 lb

By Height Limit

Best Choices Organized by Height Limits from 49 to 63 inches

By Price

See Car Seats Organized by Price (Prices Start at $100)

By Bonus

See Car Seats by Bonus features (e.g. for travel etc)

Convertible Car Seats for 3 Year Olds

Graco Extend2Fit - Best Overall Car Seat for 3 Year Ods

Graco Extend2Fit Convertible Car Seat

Graco Extend2Fit

There is one reason this car seat is a bestseller: it’s excellent value for money. For a budget price of around $200, you can get your child a car seat with 50 lbs of the rear-facing weight limit, 5-inch extended legroom, ProtectPlus all-rounded protection, and great comfort provided by easy-clean fabrics. This is, without a doubt, one of the best child safety seats and an ideal option if you’re looking for a device to ride a preschooler.

Key Features
Weight Limit

4-50 lb. (RF) 22-65-lb. (FF)

Height Limit

Up to 32" (RF) 49" (FF)

Lifespan

10 years

Type

Convertible

Stage

1st, 2nd

Age Range

Newborn ~ 7 years old

The Good
The Bad
Why We Recommend It:

*RF=Rear Facing; FF=Forward Facing

Graco Extend2Fit is always the first and best car seat for 3 year old toddlers, no matter rear-facing or forward-facing.

It’s designed for big kids to stay rear-facing for a longer time, thanks to its 50-lb maximum weight rating for rear-facing.

Graco is a traditional car seat brand with advanced and excellent experience in this industry and takes the parents’ concerns into consideration when developing new models.

The Graco Extend2Fit solved the problems that governments required a two-year-old child to sit in rear-facing.

Moreover, its 50-lb weight limit for rear-facing is still great enough to fit children at three years of age, or even 4-5 years old preschoolers.

Its height limit is not higher than other infant or convertible car seats when used rear-facing, only 32-inch. Then how does Graco Extend2Fit accommodate growing children?

The magic is the unique extension panel, which is able to offer up to 5-inch of extra rear-facing legroom. It’s adjustable at 4 levels to fit growing children.

Without any doubt, the Graco Extend2Fit is the best choice for toddlers: 1-year old, 2-year old, and 3-year old, if you want to ride your kids rear-facing longer.

The other two car seats are also available for big kids to stay rear-facing longer, the Diono 2020 Radian 3R and Clek Foonf.

Both come with a 50-lb weight limit for use in rear-facing mode. Both car seats fit 3-across if you have a big family with three children that need to use a car seat.

If your 3-year old kid wants to sit forward-facing, just transition the Graco Extend2Fit Convertible Car Seat and install it front-facing at the 4-5-6 level as your kids need.

It has a very high weight limit if used in the forward-facing mode, up to 65 lbs, which supports children of 7-years old at average weight and height.

Besides the top-notch performance in riding the kids’ rear-facing longer, the Graco Extend2Fit is also designed with a lot of other amazing features.

Graco Extend2Fit Install in Vehicles

Grow with your child

The 10-position headrest allows you to choose a perfect position for your child’s safest fit as they grow.

Generally, the harness should also be adjusted to fit your child to be at or above their shoulder.

You can complete the headrest and harness adjustment in seconds, thanks to the No-Rethread Simple Safe Adjust Harness System that allows you to adjust the height of the headrest and harness in one motion.

A strong steel-reinforced frame gives the Graco Extend2Fit strength and durability and allows it to last for 10 years of use until the car seat is out of date.

Note here, that the 10 years of use is generally calculated from the manufacture date printed on the car seat.

You should always register the car seat first as soon as you receive the package and record the manufacture date to remember the 10 years expiration.

Graco Extend2Fit Reclines

Provide additional support for accurate installation

Installing the car seat correctly is very important to allow your child to travel safely in the car.

To help the parents to get an accurate installation easily, the Graco Extend2Fit features two useful tips – a level indicator and reclines ball.

There are 6-positions of reclines available for both rear-facing and forward-facing: 1-2-3 levels are for rear-facing and 4-5-6 for forward-facing.

You can find it on the side of the car seat and adjust one of them to fit your child comfortably and safely.

The level indicator helps to check if you have adjusted the Graco Extend2Fit at the right recline or installed it correctly or not.

If the ball is in the RED fields, it means the car seat is not installed correctly in level and you must adjust the recline position.

If the ball is in the blue field, the car seat is installed accurately.

Have you noticed that there are two types of blue in the level indicator? What does that mean? You may check details in the Graco Extend2Fit review in the installation part.

Chicco NextFit Zip - Easy to Clean Car Seat for A 3 Year Old

Chicco NextFit Zip Convertible Car Seat

Chicco NextFit Zip

The Chicco NextFit Zip is an affordable car seat for busy parents, offering a zip-off design that’s perfect for easily taking off the covers for machine washing to save time. Plus, with a 40-lb weight limit and 43-inch height limit, 9-position headrest and ReclineSure leveling system, LockSure belt-locking system, and DuoGuard two layers of side impact protection, it’s excellent quality for money.

Key Features
Weight Limit

5-40 lb. (RF) 22-65-lb. (FF)

Height Limit

Up to 43" (RF) Up to 49" (FF)

Lifespan

8 years

Type

Convertible

Stage

1st, 2nd

Age Range

Newborn ~ 7 years old

The Good
The Bad
Why We Recommend It:

The Chicco NextFit Zip is also great 3 year old car seat if your child grows at the average rate as a peer. This car seat was designed for children from 5-40 lbs and up to 43 inches in height,  good for your child riding in rear-facing mode.

But if your big kids outgrow the car seat’s height or weight limits, don’t worry, the NextFit Zip allows for the second mode – forward-facing for a 3 year old toddler.

The Chicco NextFit Zip is able to ride a child 22-65 lbs and up to 49 inches in height when used in forward-facing mode, fitting all the littles at their 3 years of age, no matter smaller 2 year old toddlers or 7 year old big kids.

It’s designed to grow with your child to match your everyday life. The nine-position headrest and nine-position ReclineSure leveling system provide multiple positions for you so that you can always find a perfect fit with security and comfort.

It supports two ways for installation – LATCH and the vehicle seat belt. The unique SuperCinch tightener and LockSure belt-locking system make it easy for you to correctly install the car seat with a tight but comfortable fit.

Chicco NextFit Zip Reclines

A perfect combination of safety and comfy!

The Chicco car seats feature a unique design with a deep-looked seat pad.

The NextFit Zip is the entry-level model, but still features the company’s DuoGuard – a combination of deep rigid shell and EPS energy-absorbing foam and two layers of head and body protection for the best safety. 

It’s a cup holder car seat. The cup holder is removable and dishwasher-safe for cleaning. But it seems the location is a bit far away from a little reach, not as convenient as the Graco’s two cup holders on both sides. 

Made of machine-washable fabric, the NextFit Zip is parents-friendly enough for easy cleaning, and effortless maintenance. You can easily take the seat cover off, thanks to the zip-off design.

Chicco NextFit Zip Install in Vehicle

Britax Marathon ClickTight - Safest Car Seat for 3 Year Old

Britax Marathon ClickTight Convertible Car Seat

Britax Marathon ClickTight

If you’re looking to take a step up from the basic budget child safety seat, the Britax Marathon could be your guy. Delivering a weight range of up to 65-pound and a top height of 49-inch to match, along with a few exclusive manufacturer features, such as SafeCell, V-shaped tether, and ClickTight, this car seat promises the safest protection to ride your kid from birth to preschool.

Key Features
Weight Limit

5-40 lb. (RF) 20-65-lb. (FF)

Height Limit

Up to 49" (FF)

Lifespan

10 years

Type

Convertible

Stage

1st, 2nd

Age Range

Newborn ~ 7 years old

The Good
The Bad
Why We Recommend It:

The Britax Marathon is a convertible car seat for a 3 year old child in both rear-facing and forward-facing.

It’s designed for small toddlers between 1-2 years old in the first stage and big preschoolers between 3-5 in the second stage, not supporting the 3rd stage for boosters.

However, if your child outgrows the Marathon’s weight limit of 40 pounds or height limit of beneath at least 1-inch below the handle.

You should switch the car seat from rear-facing to front-facing and move your 3-year-old kid to the convertible mode that will be suitable for kids weighing between 22-65 pounds with a height limit of 49-inch at most.

The Britax car seats are commonly more expensive than the Graco car seats. The company boasts of its several unique features.

Let’s check if it’s worth its price or not from these aspects: safety, comfort, and installation.

Safety

The Marathon features the unique SafeCell technology that is designed to help absorb crash energy. This is a feature that was developed by the Britax company and was used in all Britax car seats.

This SafeCell technique adds points to its protection performance as other car seats don’t talk about this type of feature at all. 

Another Britax exclusive feature is the V-shaped tether. It works better to reduce the movement during a crash than most car seats’ single strap-styled tether. Obviously, it wins when compared to car seats from other brands.

The reinforced steel frame and side-impact work great for strong protection, but other car seats also have this feature for basic protection.

Comfort

The Marathon is designed to grow with your child, so it comes with up to 7-position reclines.

Along with the 14-position quick-adjust headrest and harness, you can always find a perfect fit for your growing child, no matter in rear-facing or front-facing.

The machine-washable seat pad and cover offer the best comfort to your child.

Installation

The Marathon features Britax’s unique ClickTight – which makes it easy for parents to install the car seat correctly and securely.

It’s a pity that the Marathon only supports seat belt installation. Some parents on Amazon complain about its poor LATCH installation.

Safety 1st Jive - Lightest Weight Convertible Car Seat for 3 Year Old

Safety 1st Jive Convertible Car Seat

Safety 1st Jive

The Safety 1st Jive is an excellent budget child safety seat that’s a great match for preschoolers because of the great weight range from 5 to 65 pounds and top height limit up to 49 inches on offer. It’ll give safe protection to your child without having to break the bank. It’s FAA approved for airplane travel and very portable for those on-the-go families. Its slim design makes it a 3-across fit for multiple kids.

Key Features
Weight Limit

5-40 lb. (RF) 20-65-lb. (FF)

Height Limit

29-49" (FF)

Lifespan

10 years

Type

Convertible

Stage

1st, 2nd

Age Range

Newborn ~ 7 years old

The Good
The Good
Why We Recommend It:

Safety 1st Jive is a convertible car seat that provides two modes to ride toddlers at 2 or 3 years old – rear-facing and forward-facing, with a harness for fix and protection, making it the best car seat for a 3 year old.

However, considering its weight range from 5-40 pounds rear-facing. It’s better to use the Safety 1st Jive in front-facing to fit a 3 years old child.

When used as a forward-facing convertible, the Safety 1st Jive is able to carry a child from 22 pounds to 65 pounds, lasting for years used to accommodate kids between 6 months to 7 years old at an average weight.

But it’s recommended to put the small babies rear-facing as long as possible until they outgrow their car seat’s rear-facing height or weight limits. Then you can change to the next stage – front-facing convertible when they’re ready.

Based on most parents’ experience, the height limit always comes first, so you should pay closer attention to checking your child’s height occasionally.

The Safety 1st Jive is one of the best budget car seats for 3 year olds, sold at a cheap price but with a few additional inserts.

The included removable pillows provide extra head and body support. As your little one grows, the cushions are easily removed, and your big kid will love the extra comfy ride that the plush padding provides.

Just a reminder, remember to remove the head and body pillows if your toddler does not need them anymore when switching from rear-facing to forward-facing.

Its removable cup holders make both the kids and parents happy. Your 3-year-old little one won’t feel hungry or thirsty during the travels in the vehicle.

You may also enjoy the slacks sitting alongside your kid in the back seat. They’re super easy to clean when messes happen.

The same case happens to the seat pad, which is made of machine washable and dryer-safe fabrics. Parents can effortlessly take it off for washing to let their little ones stay in a clean and comfortable space.

The Safety 1st Jive is certified for use on aircraft.

Its compact design not just makes it easier to manage through airport security checks, but also fits 3 across in the rear seat of most vehicles, making it one of the best convertible car seats for small cars and growing families with several kids.

Harness Booster Car Seats for 3 Year Olds

Graco Tranzitions - Cheapest Harnessed Booster for 3 Year Olds

Graco Tranzitions 2-in-1 Harness Booster

Graco Tranzitions

Facing forward only and as low as 22 pounds in minimum weight requirement alongside a top weight limit up to 100 pounds and height limit up to 57 inches, the Graco Tranzitions is a great harness booster to grow with your child from toddler to teenage. Plus, it provides an additional mode – backless, for big kids to raise them up for wearing the vehicle’s seat belt for protection and for window viewing outside.

Key Features
Weight Limit

22-65-lb. (FF) / 40-100 lb. (Booster)

Height Limit

up to 49" (FF) / 43 to 57" (Booster)

Lifespan

7 years

Type

Combination

Stage

2nd, 3rd

Age Range

2 ~ 12 years old

The Good
The Bad
Why We Recommend It:

Most kids at their 3 years old are ready to ride forward-facing in the Graco Tranzitions, which is a 3-in-1 multifunctional car seat to grow with your child.

It can only be used front-facing for the second and third stages and is not good for fitting small toddlers younger than 1 year old facing the rear.

When used in the convertible mode, the Tranzitions is able to ride a child between 22-65 pounds and 26.5-49 inches in height, making itself one of the best 3 year old car seats.

Because this weight and height range is good enough for fitting all 3 years old children, including big kids who grow at a faster rate than the average. 

It’s recommended to keep your child in the forward-facing 5-point harness as long as possible until they exceed the harness height or weight limits. It’s obvious that the height limit comes first before the weight limit.

That’s why you should always check your child’s height and weight regularly. But parents don’t need to worry much about the big kids, who may slow down the growth rate as they get older. 

Graco Tranzitions Install in Vehicle

You may wonder if your child can sit in a booster at 3 years old. It’s not recommended to change the Graco Transitions so early, even your child may have reached the minimum weight requirement of 40 pounds at four years of age.

Generally, the boosters will also state that they’re suitable for 4 years old kids, not for 3 years old toddlers. The experts from AAP and NHTSA and Consumer Reports also advise the parents to stick to the forward-facing harness until the child outgrows the harness height or weight limits.

But if your child is big enough and ready for a booster when they’re 5 or 6 years old, you can use the Graco Tranzitions in the booster mode.

It supports both the belt-positioning high back booster and backless booster with the same upper weight and height limit of 100 pounds and 57 inches, making it suitable for big kids between 7-9 years old until they’re ready to use the seat belt like an adult.

The Tranzitions feature the Simply Safe Adjust Harness System like other Graco car seats. This function allows you to adjust the harness and headrest in one motion.

Along with the 8-position, you can always find a perfect position to fit and protect your child during their growth.

The Graco Tranzitions 3-in-1 harness car set is designed to please both the littles and their parents. It has two removable cup holders that make your child happy staying in the car seat.

Its seat pad is made of machine-washable fabrics that save the parent’s time and energy.

Believe me, you definitely won’t have time to wash the seat pad and cover in hand!

Graco Tranzitions Cup Holders

Graco Atlas - Lighet Weight Harness Booster for 3 Year Olds

Graco Atlas 65 2-in-1 Harness Booster Seat

Graco Atlas

Key Features
The Good
The Bad

$137.99

Britax Grow with You ClickTight - 5-point Harness Car Seat up to 120 Pounds

Britax Grow with You ClickTight Harness 2 Booster

Britax Grow with You CT

Key Features
The Good
The Bad

$329.99

Grow with You

Entry-level
$ 229
99
  • 5-point Harness: 25 - 65 lbs
  • Booster Capacity: 40 - 120 lbs
  • Height Limits: 63 in
  • ClickTight: No
  • Layers of Protection: 2
  • Machine Washable Fabric: No

Grow with You ClightTight

Premium
$ 329
99
  • 5-point Harness: 25 - 65 lbs
  • Booster Capacity: 40 - 120 lbs
  • Height Limits: 63 in
  • ClickTight: Yes
  • Layers of Protection: 2
  • Machine Washable Fabric: No

Grow with You CT Plus

Plus
$ 399
99
  • 5-point Harness: 25 - 65 lbs
  • Booster Capacity: 40 - 120 lbs
  • Height Limits: 63 in
  • ClickTight: Yes
  • Layers of Protection: 3
  • Machine Washable Fabric: Yes

Chicco MyFit - Longer Harness for 3 Year Old

Chicco MyFit Harness Booster

Chicco MyFit 2-in-1

Key Features
The Good
The Bad

$299.99

KidsEmbrac - Spiderman Car Seat for 3 Year Olds

KidsEmbrace Spider Man Car Seat - 2-in-1 Harness Booster

KidsEmbrace 2-in-1

Key Features
The Good
The Bad

$149.99

All-in-one Car Seats for a 3 Year Old

Graco 4Ever DLX - Best Overall Car Seat for 3 Year Old

Graco 4Ever DLX 4-in-1 Car Seat

Graco 4Ever DLX 4-in-1

For around $300, the Graco 4Ever DLX is one of the most popular safety seats thanks to its great 4 modes, 120-lb top weight limit and 57-inch top height limit, and 10 years lifespan. It’s a thoroughly complete scooter that suits a whole host of purposes including both protection and comfort. Not to mention, it has sublime riding experience and a RapidRemove cover for easy taking off – what’s not to like?

Key Features
Weight Limit

4-40 lb. (RF) 22-65-lb. (FF) 40-100~120 lb. (Booster)

Height Limit

up to 49" (FF) 43-57" (Booster)

Lifespan

10 years

Type

All-in-one

Stage

1st, 2nd, 3rd

Age Range

Newborn ~ 12 years old

The Good
The Bad
Why We Recommend It:

Children are safer when riding rear-facing, and it’s recommended to let them stay in the car seat in rear-facing mode as long as possible.

But most toddlers might outgrow their Graco 4Ever DLX 4-in-1 with a rear-facing harness that comes with a 40 lb weight limit when they grow to 3 years old.

At this time, parents should change it to front-facing, which is the most and best position to install the car seat for a 3 year old.

Like most toddler car seats on the market, the Graco 4Ever DLX 4-in-1 supports an upper weight limit of 65 pounds to ride a child with a forward-facing harness.

That means, your child can stay in the 5-point harness as long as he or her 5 or 6 years of age. For big kids, they may reach the limit at a smaller age. 

But don’t worry, you can store the harness and buckle in the built-in compartments and turn Graco 4Ever DLX 4-in-1 car seat into a booster – the next stage of your child in a car seat.

There are many parents asking this question: Can my 3 year old sit in a booster? Even most boosters can fit children weighing over 40 lbs, about 4 year of age with an average weight.

The AAP and NHTSA recommend – even the local laws in some states require – the parents to put the children in the forward-facing harness as long as possible, just like they’re in the rear-facing.

The Graco 4Ever DLX 4-in-1 has a high weight limit of 120 pounds when working in the backless booster mode.

It allows an 8-year-old child to stay in the car seat. It features only a 10-year lifespan.

Graco 4Ever DLX Installation in Car

You should pay close attention to the useful period and check if it’s expired or not.

The company does advise you not to use a car seat that is out of date since its manufacture date. If you’re not sure about this, you may contact the manufacturer’s support team for confirmation.

Long-lasting – both the 10-year lifespan and 120-lb weight limit are absolutely a great point to appeal to the parents. It’s understandable as the company developed this car seat to be an excellent money saver to ride a child from birth to 8 years old.

Besides the most common functions in the Graco car seats, the company upgraded this all-in-one child car seat with three additional features.

We have talked about one in the paragraph above – it’s the rubberized fuss-free harness storage compartment.

More than the Extend2Fit’s storage to hide the harness and straps with buckles hooked at the right position, the Graco 4Ever DLX allows you to store the harness and buckles in the hidden boxes so that you can switch it to a booster without the harness that might cause an installation problem and discomfort for your child.

The second is the integrated belt lock-off that ensures an easy installation, even all the Graco car seats deliver easy-to-read level indicators and six-position marked reclines for an effortless and accurate installation.

The third point is good for parents. The Graco 4Ever DLX 4-in-1 car seat has a Rapid Remove cover and you can easily take it off for washing. The seat pad is made of machine-washable fabrics.

You don’t need to care much about it getting dirty, just take it off and throw it into the washing machine. This ensures your child stays comfortably in the car seat.

Diono 2020 Radian 3R - Narrow Car Seat for 3 Year Ods

Diono Radian 3R 3-in-1 Car Seat

Diono 2020 Radian 3R

If you’re after something that is budget with a compact design for big families, the Diono Radian 3R is the crème de la crème when it comes to 3-across fitting. It features 16-inch width to fit most small car seats on the market, saving much space. Its cheap price and narrow width are its biggest selling points, but better performance when it comes
to simple design and one-attach-or-detach installation to switch between the rear- and front-facing.

Key Features
Weight Limit

5-50 lb. (RF) 22-65-lb. (FF) 40-100 lb. (Booster)

Height Limit

Up to 57.1"

Lifespan

10 years

Type

All-in-one

Stage

1st, 2nd, 3rd

Age Range

Newborn ~ 12 years old

The Good
The Good
Why We Recommend It:

If you have owned a Diono Radian 3R since your kid’s birth, then you can use it when they’re 3 years of age.

It’s one of the best car seats for a 3 year old and is able to accommodate your kid in three modes – rear-facing harness, forward-facing harnessed, and booster.

The last mode requires a minimum weight limit of 40 pounds that most 3-year-old children can not reach.

From the weight and age standpoint, your three-year-old kid can sit in the rear-facing or front-facing convertible.

From the safety point, it’s better to stick to the rear-facing mode as long as possible before your child outgrows their car seat’s weight limit – up to 50 pounds for the Radian 3R.

If your kid grows at an average speed as their peer, they should not exceed the 50-lb weight limit. But if your kid wants to see and explore the landscape outside the window, you can switch Radian 3R to the front-facing and move your kid then.

It’s not required to put a 3-year-old child in the rear-facing; Most US states only indicate this requirement that a 2 year old child should ride rear-facing in the local laws. They are:

New York, Connecticut, Illinois, Maine, Louisiana, Nebraska, New Hampshire, New Jersey, Oklahoma, Oregon, Pennsylvania, South Carolina, Virginia, and Washington.

Diono Radian 3R Fit 3 Across

 The Diono Radian 3R also works as a booster for big kids in teens. As long as your kid grows over the harness weight or height, you should change it to booster mode, generally in the ages of 7-8 years. 

Lots of parents love Diono’s car seats for their great accommodation in compact vehicles or small cars with relatively narrow seats in the back.

The company noticed this pain point for some parents and big families with several children at different ages. So they developed the 3-series, meaning to fit 3 across in the back seat.

Fitting 3 across is not Diono’s unique technique, another 3-in-1 car seat we’ll talk about in the following – Maxi-Cosi Pria also supports to fit 3 across.

Maxi-Cosi Pria - Most Comfortable Car Seat for 3 Year Olds

Maxi-Cosi Pria All-in-1 Car Seat

Maxi-Cosi Pria 3-in-1 Car Seat

Age, stage, weight, and height limits… there’s not a log the Diono Radian 3R can’t do. Standout features include the excellent 50-lb top weight for extendable rear-facing riding and 10-year long lifespan, as well as its slim design to fit 3 across. It’s versatile enough to tackle a variety of children throughout 3 stages without breaking the bank. For $299, it is very good value for money when you consider the level of performance you get in return.

Key Features
Weight Limit

4-40 lb. (RF) 22-65-lb. (FF) 40-100 lb. (Booster)

Height Limit

19-40" (RF) 29-49" (FF) 43-52" (Booster)

Lifespan

10 years

Type

All-in-one

Stage

1st, 2nd, 3rd

Age Range

Newborn ~ 10 years old

The Good
The Bad
Why We Recommend It:

The Maxi-Cosi Pria 3-in-1 is able to accommodate your 3-year-old little in two modes – rear-facing harness and forward-facing harness, only if they’re not heavier than the 40-lb weight limit of the car seat used in the rear-facing mode. But this does not affect it to be one of the best car seats for a 3 year old.

According to the suggestion from AAP and NHTSA and the experts from Consumer Reports, small toddlers should stay rear-facing as long as possible until they exceed their car seats in whatever mode.

If your child does not exceed the 40-lb weight limit or the 40-inch height limit of Maxi-Cosi Pria’s rear-facing harness at their third birthday, it’s better for them to ride rear-facing. 

But as soon as they exceed the weight or height limits, whatever comes first, you should change the car seat from rear-facing to forward-facing.

Or you can switch the car seat earlier when your kids are close to the limits before 3 years old. After all, most US states only required the 2-year-old toddler to stay in a rear-facing car seat, not for the 3-year-old big kids. 

It might not be suitable to put a 3-year-old in a Maxi-Cosi Pria booster, which needs a minimum of 40 pounds. The majority of kids at their 3 year age can not reach this weight. 

Maxi Cosi Pria Cup Holders

The Maxi-Cosi Pria looks high-end with bloomy stuffing and cushion, which also gives the parents an impression that they’re safer.

It’s not tested to get a final result that the thick cushioned headrest and seat pad are much safer, but absolutely it’s more comfortable, and expensive. 

It costs almost $100 more than the Diono Radian 3R, which is also a 3-in-1 car seat that can fit 3 across well for big families with several children. For parents who have enough budget, the Maxi-Cosi Pria 3-in-1 is on the list of good considerations anyway.

Safety 1st Grow and Go -Cheapest All-in-one Car Seat for 3 Year Olds

Safety 1st Grow and Go All-in-One Car Seat

Disney Baby Grow & Go 3-in-1

Made by the same brand that brought us the Safety 1st range, the Disney Baby Grow & Go delivers the same awesome age, stage, and weight and height limits but with an exclusive Disney themed seat pad and cover to make it more appealing and favorable for both kids and parents. If you’re tempted by the Disney prince and princess, I’d recommend taking a look at this car seat first for picking up your favorite role.

Key Features
Weight Limit

5-40 lb. (RF) 22-65-lb. (FF) 40-100 lb. (Booster)

Height Limit

19-40" (RF) 29-52" (FF & Booster)

Lifespan

10 years

Type

All-in-one

Stage

1st, 2nd, 3rd

Age Range

Newborn ~ 10 years old

The Good
The Bad
Why We Recommend It:

Safety 1st Grow & Go is a 3-in-1 car seat built to grow for extended use through 3 stages: Rear-facing of 5-40 pounds, forward-facing of 22-65 pounds, and belt-positioning booster of 40 to 100 pounds.

The longevity makes it one of the best 3 year old car seats.

You can choose any mode based on your child’s weight and height status. Generally, a 3-year-old toddler with average weight and weight will exceed the rear-facing height or weight limits.

If this happens to your littles, you can switch it to forward-facing and adapt your child with the five-point harness.

Safety 1st Grow and Go has a position in our top recommendations of best car seats for 3 years old for its impressive appearance.

Safety 1st Grow & Go is a great choice for both boys and girls with multiple colors available. You can always choose one that meets your taste.

Safety 1st Grow and Go Install in Vehicle

Designed as a multifunctional car seat to grow with your child, the Safety 1st Grow and Go provides great protection and support with the adjustable headrest and harness.

You can easily pull it up to fit your child’s growth and find the best position for the safest protection, thanks to its QuickFit Harness that allows you to adjust the headrest and harness in one simple step.

The Safety 1st Grow & Go supports three reclines to install the car seat, complying with the three modes for three stages. This helps the parents to install the car seat more correctly and securely and ensures the kids ride safely and comfortably.

The car seat comes with a seat pad that is removable and machine washable. You can easily take it off without removing the harness and throw it into the machine for washing.

This saves you time and energy, as we know, it’s inevitable that messes happen, especially the Grow and Go has two cup holders on both sides.

Best Car Seat for 3 Year Old by Weight Limit

Weight Limit Car Seat Price Height Limit
65 pounds Graco Extend2Fit $211.99 49 in.
65 pounds Chicco NextFit Zip $299.99 49 in.
65 pounds Britax Marathon $299.99 49 in.
65 pounds Safety 1st Jive $99.99 49 in.
100 pounds Graco Tranzitions 3-in-1 $109.99 57 in.
100 pounds KidsEmbrace 2-in-1 $149.99 57 in.
100 pounds Chicco MyFit 2-in-1 $299.99 57 in.
100 pounds Maxi Cosi Pria All-in-one $299.99 57 in.
120 pounds Britax Grow with You ClickTight $329.99 63 in.
120 pounds Graco 4Ever DLX 4-in-1 $309.99 57 in.
120 pounds Diono Cambria 2 XL $99.99 63 in.

Best Car Seat for a 3 Year Old by Height Limit

Height Limit Car Seat Price Weight Limit
49 in. Graco Extend2Fit $211.99 65 pounds
49 in. Chicco NextFit Zip $299.99 65 pounds
49 in. Britax Marathon $299.99 65 pounds
49 in. Safety 1st Jive $99.99 65 pounds
57 in. Graco Tranzitions 3-in-1 $109.99 100 pounds
57 in. Chicco MyFit $199.99 100 pounds
57 in. KidsEmbrace 2-in-1 $149.99 100 pounds
57 in. Maxi Cosi Pria All-in-one $299.99 100 pounds
57 in. Graco 4Ever DLX 4-in-1 $309.99 120 pounds
63 in. Diono Cambria 2 XL $99.99 120 pounds
63 in. Britax Grow with You ClickTight $329.99 120 pounds

Best Car Seat for 3 Year Olds by Price

Rank Price Car Seat Weight Limit Height Limit Stage
1 $99.99 Diono Cambria 2 XL 120 pounds 63 in. 1 stage
2 $99.99 Safety 1st JIve 65 pounds 49 in. 2 stages
3 $109.99 Graco Tranzitions 3-in-1 100 pounds 57 in. 2 stages
4 $149.99 KidsEmbrace 2-in-1 100 pounds 57 in. 2 stages
5 $199.99 Chicco MyFit 2-in-1 100 pounds 57 in. 2 stages
6 $211.99 Graco Extend2Fit 65 pounds 49 in. 2 stages
7 $299.99 Chicco NextFit Zip 65 pounds 49 in. 2 stages
8 $299.99 Britax Grow with You ClickTight 120 pounds 63 in. 2 stages
9 $299.99 Maxi Cosi Pria All-in-one 100 pounds 57 in. 3 stages
10 $309.99 Graco 4Ever DLX 4-in-1 120 pounds 57 in. 3 stages
Rank Price Car Seat Weight Limit Height Limit Stage
1 $99.99 Safety 1st JIve 65 pounds 49 in. 2 stages
2 $109.99 Graco Tranzitions 3-in-1 100 pounds 57 in. 2 stages
3 $137.99 Graco Atlas 2-in-1 100 pounds 57 in. 2 stages
4 $149.99 KidsEmbrace 2-in-1 100 pounds 57 in. 2 stages
5 $199.99 Chicco MyFit 2-in-1 100 pounds 57 in. 2 stages
6 $211.99 Graco Extend2Fit 65 pounds 49 in. 2 stages
7 $263.99 Graco SlimFit3 LX 100 pounds 57 in. 3 stages
8 $299.99 Chicco NextFit Zip 65 pounds 49 in. 2 stages
9 $299.99 Maxi Cosi Pria All-in-one 100 pounds 57 in. 3 stages
10 $309.99 Graco 4Ever DLX 4-in-1 120 pounds 57 in. 3 stages
11 $329.99 Britax Grow with You ClickTight 120 pounds 63 in. 2 stages
12 $399.99 Britax One4Life 120 pounds 63 in. 3 stages

By Bonus Features

Cheapest:

Lightweight

Three Across Fit

Law on Car Seats for 3 Year Olds

Younger than 6 Years Old Rules

States that require children under six years old to use an appropriate restraint system. These states have had no clear rules for riding 7 years old. This possibly means that 7 years olds don’t need a car seat in these states. 

However, it’s strongly recommended to use an appropriate car seat for your boy or girl at their 7 years of age. After all, most multi-stage car seats have a long lifespan of more than 7 years.

  • Alabama – under six years old to use a size-appropriate restraint system
  • Arkansas – younger than 6 years of age and less than 60 pounds should be secured in a proper child restraint system.
  • Idaho – who is six (6) years of age or younger, child safety restraint 
  • Iowa – 6 through 17 years use a child restraint or seat belt
  • Montana – under 6 years of age and weighs less than 60 pounds, a child safety restraint.
  • Nevada – less than 6 years of age and who weighs 60 pounds or less a child restraint system.

3 Years Old Car Seat Laws

  • Alaska –  4 through 7 years who are at least 57 inches or 65+ pounds; 7 through 15 who are shorter than 57 inches or weigh less than 65 pounds should use a booster seat. 
  • Arizona – each passenger who is at least five years of age, who is under eight years of age and who is not more than four feet nine inches tall to be restrained in a child restraint system.
  • California7 years and younger who are less than 57 inches must be in an appropriate child passenger restraint system – 4 through 7 years in a booster seat.
  • Colorado – 4 through 7 years in a booster seat
  • Connecticut – 5-7 years or between 40-60 pounds in a forward or rear-facing child restraint or a booster seat secured with a lap and shoulder belt.
  • Delaware7 years and younger and 65 pounds in weight or less child safety seat or booster seat 
  • Georgia – under eight years of age provide for the proper restraint of such child in a child passenger restraint system.
  • Hawaii– 4 years through 7 years must be in a child restraint or booster seat.
  • Illinois – under the age of 8 years, appropriate child restraint system.
  • Indiana – under the age of 8 years, appropriate child restraint system.
  • Kansas – for a child under the age of seven but at least four years of age, or who weighs less than 80 pounds but weighs at least 40 pounds, a child booster seat; or for a child seven years of age but under the age of 14 or who weighs more than 80 pounds, a safety belt
  • Kentucky – under 8 years of age, between 40-57 inches in height in a booster.
  • Louisiana – at least 4 years old can use a booster, this includes 7 year olds.
  • Maine – The operator shall ensure that a child who weighs less than 80 pounds, who is less than 57 inches in height and who is less than 8 years of age is properly secured in a belt positioning seat or other child restraint system.
  • Maryland – Under 8 years old and less than 57″ in height, appropriate child restraint system.
  • Massachusetts – Under 8 years old and less than 57″ in height, appropriate child restraint system.
  • Michigan – Under 8 years old and less than 57″ in height, appropriate child restraint system.
  • Minnesota – Under 8 years old and less than 57″ in height, appropriate child restraint system.
  • Mississippi 7 years and older who either weigh 65 pounds or more or who are 57 inches or taller, seat belt.
  • Missouri 4 through 7 years who weigh at least 40 pounds but less than 80 pounds and who are 4’9″ or shorter, in a booster seat.
  • Nebraska7 years and younger in a child safety seat.
  • New Hampshire – less than 7 years of age,  child restraint system. 
  • New Jerseyyounger than 8 years and less than 57 inches, in a booster seat
  • New Mexico – children seven years of age through twelve years of age shall be properly secured in a child passenger restraint device or by a seat belt.
  • New York – all back seat passengers of such vehicle who are age four or older but under age eight, an appropriate child restraint system or  in a lap safety belt
  • North Carolina7 years and younger and less than 80 pounds, appropriate child restraint system.
  • North Dakota7 years and younger and less than 57 inches, appropriate child restraint system.
  • Ohio4 through 7 years who weigh 40 pounds or more and who are shorter than 57 inches in a child restraint or booster seat
  • Oklahoma4 through 7 years, if not taller than 4 feet 9 inches, in a child restraint or booster seat
  • Oregon7 or younger: more than 40 pounds but 4 feet and 9 inches or less must be in a booster seat
  • Pennsylvania – 4 years or older but under 8 years in a booster seat.
  • Rhode Island – under 8 years old and less than 57 inches and less than 80 pounds in an appropriate child restraint system; 7 years and younger who either weigh 80 pounds or more or who are at least 57 inches tall; 8 through 17 in seat belt.
  • South Carolina – children 4 and older who outgrow forward-facing child restraint must be in belt positioning booster using lap/shoulder belts until child is at least 8 years or at least 57 inches.
  • Tennessee– Children age four (4) through age eight (8), and measuring less than four feet nine inches (4’9″) in height, must be secured in a belt-positioning booster seat system, 
  • Texas – A person commits an offense if the person operates a passenger vehicle, transports a child who is younger than eight years of age, unless the child is taller than four feet, nine inches, and does not keep the child secured during the operation of the vehicle in a child passenger safety seat system.”
  • Utah – a child who is under the age of eight or who is less than 57 inches tall must be secured in a car seat or booster seat
  • Vermont – a child eight through 17 years of age shall be restrained in a safety belt system or a child passenger restraining system.
  • Virginia -all children under 8 to be properly secured in a child safety seat or booster seat,
  • Washington -4 years or older, who is under four feet nine inches tall must be properly secured in a child booster seat. A child may continue to be properly secured in a child booster seat until the vehicle lap and shoulder seat belts fit properly, typically when the child is between the ages of eight and twelve years of age.
  • West Virginia – all children under 8 to be properly secured in a child safety seat or booster seat.
  • Wisconsin – Children must be in a booster seat until they reach age 8, more than 80 pounds in weight, or more than 4 ft. 9 in. tall.
  • Wyoming – no person shall operate a passenger vehicle in this state unless each child who is a passenger in that vehicle and who has not reached his ninth birthday is properly secured in a child safety restraint system in a seat of the vehicle other than the front seat.

Car Seats Types for 3 Year Olds

Various types of car seats can be used to ride a 3 year old with safety and comfort. You may have found that from the above list of best car seats for 3 year olds. In this part, you’ll learn more about why we recommend the three types of car seats for a 3 year old.

Convertible Car Seats

Convertible car seats are the safest option for 3 year old boys and girls. They feature a 5-point harness for both rear-facing and front-facing. 

The 5-point harness is approved to offer optimal protection for 3-year-old toddlers and preschoolers younger than 5 years of age.

Convertible car seats might be purchased after your child’s birth. Then you can keep using it for a 3 year old until they outgrow the 65-pound weight limit or 49-inch height limit.

3-in-1 or 4-in-1

All-in-one (including 3-in-1 or 4-in-1) car seats are also considered convertible car seats actually because they can be converted from rear-facing to forward-facing, and to boosters as well. 

Some all-in-one car seats for 3 year olds are able to switch to backless mode. You’ll see 4-in-1 in their name, like the Graco 4Ever DLX.

Like convertible car seats, all-in-one models can be forward-facing car seats with a 5-point harness. That’s necessary for 3 year old boys and girls. 

As your 3-year-old little one grows, the all-in-one car seats can transition to booster mode until they’re ready to wear the vehicle seat belt. So they generally have really long longevity – up to 10 years. That’s the longest lifespan of the best car seats for 3 year olds.

Combination Car Seats

3 year olds are not allowed to ride in a pure booster seat, but they can be accommodated in booster seats with a 5-point harness, i.e combination car seat. 

When you use a combination car seat to ride a 3 year old child, stick to the 5-point harness until he or she exceeds the maximum weight or height allowed by the car seat.

Typically, combination car seats have the same forward-facing 5-point harness height and weight limits as convertible car seats – a 65-pound weight limit and 49-inch height limit. Few models are exceptional, like the Chicco MyFit. It features a 54-inch harness height limit, extending the harness use time.

You can transition the combination car seats to booster mode when your little one outgrows the 5-point harness forward-facing mode.

How to Choose the Best Car Seat for 3 Year Old

Features to consider while buying the safest car seat for 3-year-old

Safety

Safety comes first! That’s the deciding reason we purchase car seats for our children. We want our boys or girls to be as safe in the car or on the plane as they are at home.

First, all the car seats sold in the US should meet or exceed the minimum safety standard – Federal Motor Vehicle Safety Standard 213. That means any car you purchased – online or offline, has passed the most rigorous crash tests before going to the market

However, the safety performance is not totally equal. It’s understandable.

A 5-point harness is more protective than a booster. The more layers of side impact protection, the better. Easier to install, more secure.

Graco car seats, like the Extend2Fit and 4Ever DLX, have a great feature – ProtectPlus which the manufacturer boasts of it for protection from frontal, side, rear, and rollover crashes. Rollover accidents are indeed rare, but they contribute many fatalities to total.

Size

The size of your child decides the size of car seats for 3 year olds. 

The height and weight of your little one should be always within the height and weight requirements of the car seats. 

For 3 year olds, the 5-point harness is a must. So, as long as your 3-year old child is less than 65 pounds or 49-inch tall, they can ride in their convertible, combination, or all-in-one car seats. 

Not only is the size of your child important, but the size of the car seat is also notable. 

You’ll want to make sure that the car seat actually fits in your car. Narrow car seats are friendly for small cars. If you have to install two or more car seats, car seats that fit 3 across are preferable.

Easy to Install

You can install the car seats for 3 year olds using either the LATCH system or the seat belt system. The LATCH system is almost always easier to install thanks to the built-in anchors and tethers.

It’s best to choose a car seat that has both the LATCH system and the seatbelt system. The majority of car seats have both.

Proper installation is the foundation to guarantee protection. Choosing a car seat for a 3 year old with easy installation will not only save your time but also increase the chance to install the car seat properly. 

From this point, Britax Marathon and Grow with You ClickTight win. Both feature the company’s ClickTight technology which allows an easier installation with a seat belt.

Durability

All three types of car seats for 3 year olds are designed to grow with your child. They last for several years ranging from 7 to 10 years. 

Choosing a car seat for 3 year olds that is durable to grow with the child will not only save money, but also be friendly for your boys or girls. They will probably get used to it. 

Changing to a new car seat for a 3 year old is not always a good idea unless you need to do that. But convertible car seats may not be suitable for big kids at 7 years of age.

Easy to Clean

Easy to clean is a great feature you should check out. 

It’s a good idea to choose a car seat that is made of machine washable fabric. You’ll find you are too busy to wash the seat pad by hand, especially if you have two or more children.

The majority of car seats for 3 year olds come with washing machine seat pads. They are easy to clean.

Very few models do not have a machine washable seat pad. As far as I know, only the Britax Grow with You and the ClickTight version do not come with the machine washable fabric.

It would be beneficial if the car seat for a 3 year old has an easy-remove-off cover. It saves time. Graco 4Ever DLX, features a rapid remove cover for easy takeoff. The Chicco NextFit Zip and its premium models have a zip-off cover.

Warranty

The longer, the better!

The majority of car seats for 3 year olds have a 1-year limited warranty. Only Diono Radian 3R promises a longer 3-year warranty.

Can a 3 year old ride in a booster seat? 

Legally, NO. 

Some states’ car seat laws make it clear that only 4 year olds can ride in a booster seat. Some states may not mention this age requirement, but the local laws require parents to use the car seat as the manufacturer’s instructions.

While all booster seats sold in the US have a 4-year-old minimum age requirement and 40-pound weight requirement. 

In the post of best car seats for 4 year olds and best car seats for 5 year olds, we STRONGLY recommend parents to use a 5-point harness for boys and girls at 4 or 5 years of age. 

Here, we also insist on putting your 3-year-old in a 5-point harness forward-facing car seat for as long as possible.

How to install the car seat for three year olds

The most common ways to install a car seat for a 3 year old boy or girl are using a LATCH and a seat belt.

However, the LATCH has a weight limit – the sum weight of your little one and the car seat should be under 65 pounds. 

You can do a simple calculation and decide what way to use it. Remember, do NOT use both installation methods at the same time.

No matter which way you finally choose to install the car seat for three year olds, LATCH or seat belt, you may want to know these tips:

  1. Follow the car seat user manual and vehicle manual 
  2. Install the car seat in the back row of the car.
  3. If possible, place the car seat in the center of the back seat which is considered the safest car seat position for installing a car seat.

What kind of car seat should my 3-year old be in?

This is a commonly asked question and knowing when your child is ready for a forward-facing seat. 

Based on the car seat rules and CPS experts suggest, a 3-year old boy or girl should ride in a 5-point harness forward-facing car seat

Among the five car seat types, there are three types of car seats suitable for 3-year old children – convertible, harness 2 booster, and all-in-one car seats.

How long should a child be in a 5-point harness?

Your child should remain in a forward-facing 5-point harness car seat until he or she outgrows the 5-point harness height or weight limit. 

99% of forward-facing 5-point harness car seats have a maximum 65-pound weight and a maximum 49-inch height. That typically happens around the ages of 4 and 7. Kids grow at different rates.

The height limit usually comes first. So if you prefer a higher height limit, you may consider the Chicco MyFit. It features a 54-inch height limit.

Once your child reaches the recommended height and weight requirement, they can then move up to a booster seat that works with your car seat belts.

Is a 5-point harness safer than a booster for a 3 year old?

Yes. A 5-point harness is safer for your child because it straps them in at 5 different parts of contact on their body (shoulder to shoulder, hip to hip, and crotch).

When your child is properly secured in the 5-point harness it prevents them from moving out of their seated position.

Booster seats only use the seat belt for installation. They are not as safe as the 5-point harness for 3 year old toddlers.

Are booster seats good for 3 year olds?

Not really. A 5-point harness is safer and better for 3 year olds boys and girls. 

Even if the weight of a 3 year old exceeds the minimum 40-pound weight requirement of a booster, it’s a good idea to keep them in a 5-point harness forward-facing car seat until they reach the height or weight limits.

But you can use a booster with a 5-point harness for 3 year olds and stick to it until your child grows bigger.

Graco Tranzitions is the cheapest, Chicco MyFit has the highest harness weight limit, Britax Grow with You ClickTight is easy to install, Graco Atlas is a great travel car seat.

Should a 3 year old be rear-facing?

The laws do not require this.

As long as your little one does not outgrow the rear-facing weight and height limits, a 3 year old boy or girl can be rear-facing as well. 

Rear-facing is the safest way for a child to travel. Some states require kids to be in rear-facing position up to 2 years old. There are car seats that allow extended rear-facing up to 2 years or older, like the Diono Radian 3R and Chicco NextFit Zip.

FAQs on Best Car Seats for 3 Year Olds

What car seat should a 3 year old be in?

A 3 year old toddler commonly rides in a forward facing car seat – a convertible car seat for most cases, harnessed booster seats, and all-in-one car seats.

It’s not a good idea to accommodate your littles in a booster, which is designed for kids at least 40 pounds or four years old, even if they exceed the 40-lb low weight limit of a booster at three years of age.

Can a 3 year old go in a booster seat?

It’s not recommended to put a 3 year old in a booster seat that usually comes with a minimum weight requirement of 40 pounds. You may also find all the booster seats state in the product description that they’re for four-year-old kids.

You may wonder if it is possible to put your 3 year old big kids in a booster if they reach the low weight limit of 40 pounds. It’s better not. If you really want one to be a backup in the kid’s grandparents’ vehicle, purchase a cheap harness booster.

What is the safest car seat for a 3 year old?

Harness-protected car seats are the safest car seat for a 3 year old child. Parents can choose a convertible or combination or an all-in-one car seat with a harness for protection.

A booster seat is not a good option for a three year old child, even if they’re big enough to meet the low height and weight limits.

Can my 3 year old use a booster seat in the UK?

The UK requires that children aged 3-12 years old or up to 135cm tall must sit in a booster seat in the front or back of the car in the wings. It seems ok to put a 3 year old child in a booster.

However, do NOT use a backless booster for young children under 3 year old if, at all possible, even some seats are approved for use for these aged children. The backless booster does not offer the best protection as a convertible and high back booster.

What age is booster car seats for?

Booster (high back or backless) car seats sold in the US state that they’re designed for 4 year old children.

When should a child move to a backless booster?

Based on its requirement, a child at 4 year old or weighing over 40 pounds can move to a backless booster.

It’s recommended to stick with the harness protection until your child outgrows their harness height or weight limits.

The backless booster can be used as a backup.

What is the difference between a high back booster and backless booster?

Highback booster provides better protection and fits when compared to backless booster. The former allows additional head and back support when your child sits in the car seat.

A backless booster seat doesn’t have a back and must be used with a high vehicle seat or vehicle headrest. A child must have head support to the tops of his or her ears – a high-back booster can provide that support.

Are high back booster seats safer than backless?

Yes. A high-back booster seat has a supportive full-length back, side wings, and a headrest, which provide extra protection for your child’s head and torso. It also holds your child securely in the seat thanks to the upper belt guide.

What kind of car seat should a 3 year old be in?

Is a booster seat safe for a 3 year old?

It seems okay for a 3 year old in a booster if he or she meets the weight and height requirements. However, some state and local laws on child passenger safety require a child to be at least 4 years old to ride in a booster.

So I highly recommend keeping your 3 year old in 5-point harness mode until they reach 65 pounds in weight or 49 inches in height. If you have an older child check out the best car seat for 5 year olds.

Which is the best car seat for toddlers?

The car seats with a 5-point harness are the best for toddlers.

Which is the best car seat for 3 year old?

If you plan to purchase a new car seat for a 3 year old, the harness 2 booster would be a great option. The best car seat for 3 year old can be Graco Tranzitions It’s the cheapest. 

If you prefer a 5-point harness up to 120 pounds weight limit, the Britax Grow with You ClickTight is the best car seat for 3 year old.

What are the height and weight limits for convertible car seats?

The height and weight limits for convertible car seats vary depending on the makers and the specific car you chose. 

The average weight limit for rear-facing car seat mode is between 40-50 pounds. The rear-facing height limit is between 40-49 inches. The upper weight limit for forward-facing car seats is 65 pounds. 49-inch is still the forward-facing height limit. 

For example, Chicco NextFit Zip comes with a combination of 40-pound-weight-limit and 43-inch-height-limit for rear-facing and 65-pound-49-inch for forward-facing.

Convertible car seats with a 50-pound rear-facing weight limit include Graco Extend2Fit  and Diono Radian 3R. The latter is an all-in-one convertible car seat.

Which car seats didn’t make it on the list?

The infant car seats and classic booster seats are not on the list. 

Infant car seats are not for toddlers at 3 years of age. The child will easily outgrow the infant car seats typically at 1 year old. 

Classic boosters are suitable for older children at least 4 years old. They are not suitable for 3 year old toddlers. 

Boosters with a 5-point harness are exceptional because you can use the harness mode at first when your boy or girl is not ready to ride in a booster.

What kind of car seat safety standards are for three year olds?

All the car seats sold in the US should meet or exceed the Federal Motor Vehicle Safety Standard 213 on rigorous crash tests. 

Three year olds should stay in a 5-point-harness car seat, which is approved to feature side impact protection.

Which one of these can fit three across?

The narrowest car seats for three year olds to fit three across include Graco SlimFit3 LX and Diono Radian 3R

The Diono’s R series was designed to do the 3-across fitting. Radian 3R is the entry-level model with a budget price of under $200. But it lacks an infant insert, not friendly for newborns. 

If you have enough budget, premium models like Radian 3RXT, and 3QX are available.

What kind of features should be on the lookout for when buying a car seat for a 3 year old?

More than the basic essentials, there are a few bonus features you may like when buying a car seat for a 3 year old. 

Multiple recline positions are good and friendly for older children. Two removable cup holders are useful, better if they are dishwasher-safe and washable.

Durable and machine washable fabric is more practical. Most of the best car seats for 3 year olds above are machine washable, except Britax Grow with You ClickTight.

A slim design is preferable if you have to install multiple car seats.

Lightweight car seats are friendly for travel, like the KidsEmbrace and Graco Atlas.

How do you install these best car seats for three year olds?

Make sure you install it on the back seat. Also, make sure you read the manual first for easy installation. The latch system is the easiest to use but you should pay attention to the LATCH limit. 

Make sure the sum weight of the car seat and your child do not exceed 65-pound. If yes, use the seat belt as well.

What are the height and weight limits for these forward facing car seats for 3 year olds?

When you ride your 3 year olds forward-facing, there are different car seat options. Whatever type of car seats you have chosen, the height and weight limits range mostly between a certain scope.

For example, convertible car seats for forward-facing riding feature an upper 65-pound weight limit and a 49-inch height limit. 

That’s the same for all-in-one car seats and the majority of boosters with a 5-point harness. Only Chicco MyFit has a higher 54-inch harness height limit.

What kind of car safety features do these 3 year old combination seats come with?

Steel reinforced frames will offer optimal protection for 3 year olds in combination seats.

Nowadays most seats are equipped with an energy-absorbing base, thanks to the energy-absorbing foam. 

The impact absorbing layer around the combination car seats will protect your 3-year-old child from harm or injury in case of any collisions. The car seat manufacturers try to outdo each other in safety stuff and this can be a major selling point for car travel. 

The most important body part is the child’s head and neck. The proper head support is mandatory. The headrest positions (headrest height) can be easily adjusted to grow with your child. Most car seats come with multiple harnesses and headrest positions. 

Let me mention side impact protection for a second. As you know t-bone accidents are quite common and the only protection against them is siding impact protection. With car seats, you can have from one up to three layers of side impact protection. 

The American Academy of Pediatrics recommends the most protection possible.

How can you fit three across these 3 year olds all in one car seat in small cars?

You need to go with slim-fit designed car seats to fit three across if you want to install two or more car seats in a row. Don’t overlap the car seats.

Narrow car seats like Graco SlimFit3 LX and Diono Radian 3R are the best car seats to fit three across.

What is the car seat installation for these 3 year old booster seat options?

It’s better NOT to put a 3 year old in a booster unless the booster seat has a 5-point harness.

Remember to place the car seat in the back seat of the vehicle.

Before you get started make sure that you check out the manual for easy installation.

Secondly, make sure that the bubble level indicator and the headrest are in the right spot.

Next up you have to move the position recline into neutral.

Then secure the car seat with the LATCH system or seat belt. NEVER use both. LATCH should be easier, but it has a 65-pound weight limit; seat belt installation takes a longer time.

If you prefer a seat belt, Britax Grow with You ClickTight car seat is a good option.

What other features do you have to consider when you’re checking out a rear facing or front facing 3 year old seat?

The 5-point harness is necessary for protection in a 3 year old seat.

Also the car seat cover (seat pad) should be machine washable.

The car seat shell should be made out of durable plastic. Reinforced steel is better!

The leg rest provides additional comfort. The cup holders are great for kids to have fun with. The multiple-position recline provides the most comfort to fit your child.

A quick list of items to check before buying: harness straps, harness slots,  shoulder straps, harness car seat.

Are there low price and still safe car seats for 3 year olds?

When you’re looking for the safest car seats for 3 year olds and want to save a bit of money, you can do so by thinking ahead. 

Here are two methods for your reference.

You can purchase an all-in-one car seat

It lasts long from a child’s birth to preteen so you don’t have to buy the next one. The top-rated car seats work with smaller cars (compact cars) these are available in rear-facing (rear face, rear-facing car seat), forward-facing car seat mode, and then booster.

You can purchase a budget combination car seat to work with an infant car seat.

For example, Graco Tranzitions is the cheapest harness 2 booster. It costs only a bit more than $100. Then you can buy another cheap infant car seat like the Chicco KeyFit 30

The total cost for these two car seats = $109.99 (for Tranzitions) + $199.99 (for KeyFit 30). It’s about $309.98, quite the same as the price of the Graco 4Ever DLX, which is an all-in-one car seat.

What is the evolution of car seats through the life of my child?

From birth, your child will go through at least three stages in a car seat until he or she is ready to get out of that. 

It starts out with the infant seat or infant carrier. Then you need to upgrade to convertible car seats (rear facing, forward facing car seats like combination car seats and all-in-one).

Move on to the next stage and it’s the booster (harness booster, high back, or backless). 

A car seat for a 3 year old can be a lightweight car seat. Also, it’s good if it has ride safer travel vest (ride safer vest).

What is absolutely essential to have in convertible car seats for 3 year olds?

Convertible car seats are good for a 3 year old because they could do rear facing (rear face) in parallel with forward facing.

More than the basic safety feature to pass all federal safety standards & federal crash tests, the must-have safety features are: 

Energy absorbing steel reinforcement, eps energy absorbing foam, layers of side impact protection, machine washable harness and covers, properly secured anchors. 

And the additional perk of having multiple positions for headrest and recline and removable and machine washable seat pads, dishwasher-safe washable cup holders.

The safest car seats are the rear facing car seats.

Are there any good travel car seats for 3 year olds?

If you’re looking for travel car seats for 3 year olds, there are quite many to choose from. These portable car seats pass all federal safety standards and are lightweight car seats. 

It is much easier to switch them from car to car for multi-vehicle households. If your family does air travel a lot, they’re friendly to carry from home to the airport as well.

How to know if the car seat is suitable for air travel or not? You can find this information in the user manual. All travel car seats for 3 year olds have their user manual uploaded online from the manufacturer’s website. You can even know this before paying a cent on it.

You’ll find statements like this – this child restraint system is FAA approved for aircraft use.

Only car seats with a 5-point harness can be used for air travel, as there is no shoulder belt on the plane. Booster seats cannot be properly and tightly installed with a lap-only belt.

The Diono Radian 3R is the most portable travel car seat for 3 year olds. It’s not a lightweight car seat, but it features a foldable design. It allows you to carry it like a backpack. That’s super convenient for parents who need to carry a lot of traveling stuff with kids and car seats.

Graco Atlas is also a good travel car seat for 3 year olds. It’s a lightweight booster seat with a 5-point harness. For 3 year olds, keep using the 5-point harness for both air travel and road trips. 

The travel car seat for a 3 year old should have these features: machine washable covers, at least one cup holder – better if the cup holders are removable and dishwasher-safe washable, two layers of side impact protection, steel-reinforced frame is better – some entry-level models may have a plastic frame, adjustable headrest, and harness.

What is the safest car seat for a 3 year old?

The safest car seat for a 3 year old should be the car seat with a 5-point harness. Convertible car seats like Graco Extend2Fit, Chicco NextFit Zip, and Britax Marathon (Advocate/Boulevard) are good options.

If you prefer a 5-point harness car seat up to 120 pounds for a 3 year old, the Britax Grow with You ClickTight is the safest option. It features the ClickTight technology for easy installation.

What is the best booster seat for a 3 year old?

The best booster seat for a 3 year old is the Chicoc MyFit. It was designed with a 54-inch maximum height limit, extending the harness protection for children 3 years or older. 

It’s a narrow car seat for three cross fitting.

What is the best travel car seat for 3 year old?

The best travel car seat for 3 year old is the Diono Radian 3R and its premium siblings like Diono Radian 3RX and 3QX

They are all-in-one car seats with a 5-point harness to safely ride 3 year olds rear-facing or forward-facing – as long as your 3 year old little one does not outgrow the 50-pound rear-facing weight limit. 

They are not lightweight, but they feature a folding design. The seat pad can be folded up. Then you can carry it like a backpack. What a brilliant idea!

The foldable design is ultra-practical if you want to take a 3 year old boy or girl for air travel. The Diono Radian series was the first and original car seat for 3 cross fit. 

They are absolutely the best travel car seats for 3 year olds.

What is the recommended car seat for 3 year old?

The recommended car seat for a 3 year old is a convertible car seat. There are a few great options to meet your and your little one’s needs.

Graco Extend2Fit is the best overall convertible seat for 3 year old. It comes with a 50-lb rear-facing weight limit to extend the rear-facing ride up to 2 years or older. It is Graco ProtectPlus Engineered with extra safety features, offering protection from frontal, side, rear, and rollover crashes. 

Chicco NextFit Zip is the #2 recommended convertible car seat for 3 year old. It extends the rear-facing ride as well with an association of a 40-pound weight limit and a 43-in height limit. What we loved is that it features a zip-off design. You can easily zip off the seat cover for machine washing. 

Britax Marathon is the #3 recommended convertible car seat for 3 year old. It can be easily installed with the seat belt for its ClickTight feature.

What is the best lightweight car seat for 3 year old?

The best lightweight car seat for 3 year old is KidsEmbrace.

It weighs only 15 pounds. The car seat is also the best Spiderman car seat for a 3 year olds. Your 3 year old boy would like Spiderman or Batman while your 3 year old girl might like Cinderella.

What is the best narrow car seat for 3 year old?

The best narrow car seat for 3 year old is the Graco SlimFit 3 LX, with a width of 16.7 inches. It’s even narrower than the 17-inch width for the Diono Radian series.