What’s the best car seat for 3 month old? (Guide 2022)

For the best car seat for 3 month old, you’re at the right place! If you’re shopping for a child of different age, check out the Best Travel Car Seats for All Ages for the right list.

With a 3-month-old at home, you are probably stepping out of the infant car seat (with these stylish, handy bases that allow you to move from car to car) and ready to shop for convertible car seats. If you have a family of two cars, a Graco SlimFit 3-in-1 car seat is worth buying.

Your child rides most of the time, then a smaller, travel-friendly car seat to use in the second car.

Why should you consider buying a lightweight car seat for travel? Most families don’t want to lug their best 25-pound car seat for a toddler through the airport, hoist it over a full row to install in a small airplane window seat, sail back to another airport, and then hoist it on. a taxi. or rental car. A better option if you can swing it is to buy one of the many 3-month-old car travel seats on the market today. As a bonus, many of them are less expensive than their heavier counterparts.
What do we look for in the best portable car seat for babies from 3 months? We have some priorities:
-Has to be lightweight, ideally no more than ~ 10 pounds
-It has to be easy to use
-Ideally, it should last at least a few years
Of course, every family has unique needs when choosing their three-month-old infant car seat. If your son is extremely tall for her age, he may want to choose a taller car seat even at the expense of a few extra pounds. If your travels involve a long flight and a long journey, look for comfort features like padding and cup holders to keep your younger passengers happy.
There are some super tall travel convertible car seats available, but they are much bulkier than you require for a 3-month-old and will make it harder to look back on a plane or small car.

Quick Picks:best car seat for 3 month old

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If you want to skip the details, here are my top picks for the best car seat for 3 month old:

1.Graco SlimFit 3 in 1 Car Seat (best convertible car seat for 3 month old)

Graco SlimFit 3 in 1 Car Seat (best convertible car seat for 3 month old)
Graco slimfit installation

A sturdy three-in-one group 0 + / 1/2/3 group car seat with a built-in base with many safety and comfort features. Contrary to what the name suggests, it is not particularly slim and is better suited to large cars.
From the long-established American brand of car seats and car seats Graco, the Slimfit All-in-One claims to be “the only car seat you’ll ever need.”
Transforming from a suitable baby seat from birth to a toddler safety seat, and finally to a high-back booster seat for children up to 12 years old, it is one of the few in the 0 + / 1 / group. 2/3 seats on the market, and one of the cheapest, with a RRP of £ 169.99. Excellent value if you plan to use it for its entire useful life.
Its aesthetics may lack the finesse of other similar seats in the category, and its sheer height can be a problem for parents in smaller cars, but the Graco Slimfit All-in-One can certainly compete with the best in safety, comfort. and robustness.


  • Very light
  • Bargain price
  • Good seatbelt fit


  • Doesn’t fit as nicely in a kid backpack as Bubblebum

2.Graco Tranzitions 3 in 1 Harness Booster Seat for 3 month old

The Graco Tranzitions 3-in-1 harness booster car seat is an excellent choice for parents looking for a car seat to upgrade with their child from toddler to a young child. With its slim design, easy installation, and lightweight construction, it is ideal for busy families with smaller vehicles or more than one car seat.
The Tranzitions car seat is meant for kids between twenty-two pounds and one hundred pounds. It is not an infant car seat, so the earliest age it can accommodate is a toddler.

.Graco Tranzitions 3 in 1 Harness Booster Seat for 3 month old
the backside of the Graco transition

Key Points

  • Converts from harness boosters (22-65lbs), highback boosters (30-100lbs), and backless boosters (40-100lbs)
  • The harness is adjustable from five points.
  • Not bulky and narrow profile
  • The seat pad and covers are fully removable and machine washable.
  • Includes multiple cup holders and dual armrests.


  • The narrow design and minimal weight make it easy to move from vehicle to vehicle
  • Accommodates children from toddler (22lbs) to young child (100lbs)
  • Sleek design, but still includes comfort features such as armrests and cup holders
  • Easy to install with either LATCH system or seat belt
  • No-rethread harness adjusts with the headrest


  • No storage for the harness system

3.Cosco Apt 50 Convertible Car Seat

91bFQVd5JzL. SL1500

A single injection molded piece of plastic has been used to manufacture the car seat, which means it is very light. There is an easily removable cover on the seat and a strap that goes over the top of the seat for forward-facing, and it also comes with a single latch strap that can be used both forward and backward facing. There are four parts in all.
The federal government has approved this car seat. At two years old, my son is still rear-facing, which is another excellent safety precaution. It is effortless to install and only requires a few minutes of your time. However, I like that there are two cup holders and removable covers that are easily washable in the washing machine.

Cosco Apt 50 Convertible Car Seat
Cosco APT 50 installation

Overall, I’m satisfied with the seat.


  • Compact
  • Easy to install with LATCH or seatbelt
  • Comfortable
  • affordable


  • Low size limits

4.Graco Extend2Fit Convertible Car Seat

815zhCByg8L. SL1500

The car seat is amazing. It is far and beyond the best you can buy for the money. They can comfortably face backwards with extra legroom (much safer!) thanks to the extension. A lot of removable cushioning and pads make this thing very comfortable. Taking off and replacing the cover is actually quite simple.

Graco Extend2Fit Convertible Car Seat
Graco extend installation

You can install it into your car easily, but watch the YouTube videos first, then adjust the straps and its other features before putting it into your car. It’ll be worth it, I promise. This seat is just the best. Here is THE CARSEAT. If you’re thinking about buying it, YES, you should!!

The rear face has been extended! This makes rear facing safer! 


  • $199 is an affordable price!
  • Comfy and super convenient
  •  The perfect amount of cushion
  •  A shoulder pad
  •  Inserts for infant heads and bodies
  • Installation is easy
  • There are so many legrooms


  • Washing the covers takes much time
  • Tighten the straps are not easy

5.Century Drive On 3-in-1 Car Seat

813lk7y8gmS. SL1500

One of the best car seats we have ever used! It combines both functionality and beauty. A great feature of this chair is that you don’t have to rethread the shoulder straps. They adjust one-handed with the head rest. It has very soft cushions, and the newborn piece can be removed easily. 

Century Drive On 3-in-1 Car Seat
Century drive assembly

Both sides of the seat have instructions on how to place the height stands. I recommend this product…it is affordable, easy to install, and meets all of our safety requirements. My baby is 1.5 years old and weighs 25 pounds, so he has plenty of time to grow into the maximum usage of the seat.


  • Great quality
  • Easy to use
  • Easy to install
  • Attractive design
  • Affordable price


  • Flimsy plastic

6.Safety 1st Grow and Go All-in-One

81yDCpwFdJL. SL1500

The seat is fantastic! I noticed that my child was more relaxed and was able to look around more easily – which made him happier. It’s a nice smooth fabric, almost like neoprene. During our south Georgia weather, it will stay cool and be easy to clean. The strap holders make getting him in and out much easier. Also, I like that the headrest/ straps are adjustable as a single piece.

Safety 1st Grow and Go All-in-One
Grow and go unboxing

 You should not rethread this unless you are using it for a tiny baby. My main concern was the size and how well it would fit in our vehicles. It is a very good value. The seat is so reasonably priced and good quality that I’ll probably purchase another one for my car and perhaps the grandparents.


  • Very comfortable
  • Safe
  • Easy to wash
  • Easily remove
  • Great value for the price
  • Good quality


  • Latch system is very loose
  • Installation is difficult

7.Evenflo EveryFit 4-in-1

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 I am extremely impressed. Definitely the best seat I have ever purchased. I loved how durable it is, and my daughter feels so comfortable. The installation was also very simple. It also has comfortable chest clips. With these clip, it features a comfortable fit and provides the utmost safety. Also, her snack tray and cup holders are a big hit with her. It’s wonderful that she can use this seat for a few more years. It’s also very easy to clean with removable covers. Your product is excellent. I highly recommend this seat.

Evenflo EveryFit 4-in-1
Assembly of the Evenflo every kid


  • Snack tray
  • Cup holders
  • Very comfortable and secure
  • Wonderful design
  • Easy to install
  • Lightweight


  • Wouldn’t tighten enough

Before you buy, here’s what you need to know

Know your child

Knowing your child’s height and weight will help you determine their seat size, as well as when to upgrade. Behavioral and health issues will also influence your decision.

Know your stores: 

A few retailers allow you to test-install a child seat in your car, which is excellent because the seat belt position or cushion angle can make a car and child seat incompatible.

  A more comprehensive selection of seats can be found at online retailers like Albee Baby, Amazon, Buy Buy Baby, and Diapers.com. Some of them offer free shipping. Always see the models first before making an online purchase. More expensive models can be found at specialty stores or boutiques.

Know your car

 You should review your vehicle owner’s manual for child-safety sections and familiarize yourself with aspects such as safety belts, LATCH, and child seats.

5 Ways to Ensure Your Child’s Safety

According to NHTSA and field studies, there are 74 to 90% of car seats, booster seats, and seat belts misused. Yeah, you read it right. Most child seats don’t fit right. Check this out:

Right seat

 See our timeline above for the height and weight limits of the seat. The age of your child also affects their skeletal development.

Seat tight

Seats should not move more than an inch from side to side or front to back once installed. It can be challenging but don’t give up.

Harness height

 During rear-facing installation, the harness straps are below the shoulders of your baby. The harness straps for a forward-facing child should be at or above the tot’s shoulders. Permanently mount the chest clip under the armpits.

Harness tight 

The straps at your child’s shoulders shouldn’t be able to pinch any fabric if your child is properly secured.

Final check: Recline right and tether tight. 

For rear-facing seats, ensure the recline angle is set correctly (most have an indicator) to prevent the head from falling forward and obstructing the child’s breathing.

The top tether should always be tightened on forward-facing seats equipped with LATCH or a seat belt to prevent forward movement, which could cause a head injury.

Frequently Asked Questions

What kind of car seat does a 3-month-old need?

Baby and toddler car seats should be rear-facing.
How long? It would help if you keep your child in a rear-facing car seat until at least two years old or until they reach the maximum weight or height the car seat allows. Deal explains that too many people are eager to turn their babies around

How long can a baby be in a car seat at three months?

It is recommended that a baby should not spend more than two hours in a car seat within 24 hours. As a result of a baby being in a semi-upright position for an extended period, they may suffer from 1—a strain on their still-developing spine.

Should you travel with a 3-month-old baby?

As a general rule, doctors advise waiting until your baby’s immune system is more developed before flying. Full-term infants could reach this stage within one month, though most doctors recommend waiting between three and six months.

Can 3-month-old baby travel by car?

If you aren’t following confinement, you can take your baby by car, bus, or train pretty soon after she is born. Make sure you take these precautions to prevent infections if you’re traveling with your baby. It’ll be accessible in three months.

Can I take my 3-month baby on holiday?

Airline companies prefer that babies are at least two days old before boarding, but it’s up to you after that. It is more likely that you and your baby will be ready for travel by three months. You’re no longer worried about your baby being too fragile, but they’re still small enough not to notice if they’re at home or in a hotel room or cuddled up to you.


In this article, we reviewed three of the best car seat for three-month-old babies. Graco’s slim-fit 3-in-1 is our top pick. There is no doubt that it is a safe and comfortable seat for your baby. It is also easy to install in your car. One thing you need to remember when you go to buy your child’s car seat is that your child’s safety should be your top priority. In this way, you can learn how to choose the best car seat for your child by using this guide. Happy shopping!


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