Best All In One Car Seats

“Mommy, what was that Big Bang?”… she didn’t realize that they were in a horrible accident…

Accidents happen when you least expect it.

There’s no way of knowing when it will happen. This is why you have to be prepared ahead of time.

You are looking for an all in one car seat probably because you like to plan ahead. Let me share with you a secret.


All in one car seats are the best ones if you want to save money without compromising on safety. They are indeed more expensive than other car seats, but this will be the first and last one that you have ever to buy.

I know how hard it is to find the right one with all that clutter out there. This is why I’ve created the Best All In One Car Seat article to help you narrow down your search.

By reading this article to the end, you will find out which of these car seats is the best fit for you. Not only that, but I will share with you what happened in the accident above. Also, I will reveal which car seat was involved, and how did it perform.

Let’s get this best article started.

What Will I Learn?

Best All In One Car Seat in 2020

#1 Britax One4Life ClickTight All-in-One Car Seat – Best All In One Car Seat

Britax One4Life ClickTight Best All In One Car SeatBritax One4Life ClickTight won the Best All In One Car Seat award. Here’s the truth.

These car seats are the most expensive ones that you can buy. But it’s worth it. Typically you need anywhere from 3 to four car seats for a child if you follow the milestones. If you’re only buying two, you have spent more than this car seat alone.

As the name suggests, these are lifers. The Britax won the best award for multiple reasons. The Britax One4Life caters to babies and up to 120 young adults. You’re getting the best mileage out of any car seat. It allows extended rear-facing up to 50 pounds.

Another benefit of getting an all in one car seat is that you don’t have to waste time with all the different installations. Britax has the easiest installs ever since they came out with the ClickTight tech.

All you have to do is pop open the seat feed through the belt or the latch and close it. You’re done. There’s no force required what so ever.

Safety-wise is a good choice, as well. It has two levels of side impact protection, which not juts cover the head but the neck and torso. It has SafeCell tech that absorbs the impact energy and protects your child from harm.

This is built like a tank. For the last few years, it was an ongoing joke with Britax that they can build a car seat that can handle anything but the washing machine.

Now they have fixed it. The material can be easily undone, and machine washed.

It’s super comfortable, and you’re getting a long mileage no wonder it’s the best all in on car seat you can get.


It’s easy to install, and it’s impossible to mess it up

Extremely durable it will last for ten years and serve several kids

Finally, a Britax car seat that allows machine washing the material


It’s pricey and if you plan to buy more than one you need a serious budget

It’s large and heavy anything for safety

#2 Chicco Fit4 4-in-1 Convertible Car Seat

Chicco Fit4 4-in-1 Convertible Car SeatThis is the ultimate big kid seat. No matter when you’re getting it, your child will love it. It’s so different from the rest. By different, I meant it in a good way. It looks like a grown-up seat.

No wonder why kids are so attracted to it. After a while, they want what big kids or adults have. With the Chicco Fit4Convertible Car Seat, you can give it to them.

It’s one of the safest car seats you can go with. It has a steel frame, so no matter the accident, your child will be safe. There are two layers of side impact protection. It’s hard to believe, but it caters to newborns as well.

The lowest weight limit is set to 4 pounds. If you want to, you will be able to take your newborn home from the hospital. The upper limit taps out at 100 pounds.

It’s important to keep your little one rear-facing as long as possible. With the Fit4 Convertible Car Seat, you can do extended rear-facing up to 40 pounds.

The installation is almost effortless. When you use the latch system, there are two tails to pull. It’s numbered, so you don’t mix it up. All you have to do is pull #1 up and pull #2 down, and you’re done.

It’s the coolest all in one car seat that you can buy.


This car seat is the first and the last one you will have to buy, a real money saver in the long run

Thanks to the QR codes on the side you get access to instant help through videos

Kids love it because it’s so comfortable


It takes up a lot of space the front might suffer

It’s not cheap you will need a budget

#3 Maxi-Cosi Magellan XP All-in-One Convertible Car Seat

Maxi-Cosi Magellan 5-in-1 Convertible Car SeatThis incident happened with some close friends of mine.

It was a routine Monday morning to the daycare. He was dropping off his son. At least that was the plan.

When they crossed that faithful intersection, another driver T-boned them.  The crash started with a loud bang. The windows cracked and exploded into a million shards. Metal screeched and bent under pressure.

The safety features kicked in and saved the life of the father. It was a scary experience for the little one. He was crying. Luckily there wasn’t a scratch on him. He was scared, so he cried.

The Maxi-Cosi Magellan is one of the best all in one car seats you can choose from. They have done an amazing job with comfort. Many parents told me that their kids fall asleep faster and sleep longer than with other car seats.

The Magellan caters to infants who are at least 5 pounds and all the way up to 120 pounds. That’s a lot of mileage for on seat.

The only reason why it’s lower on my list is because of the install. It’s a bit complicated. You have to remove the cup holders and the bottom part of the cover as well. Then you have to guide through the belt or the latch. With some contortionist maneuvering, you will get it tight. Then you have to put everything back in place. This is why it’s lower on my list.

Other than the installation it’s a good all in one car seat to have.


It was crash tested in real life and the baby safe and sound

It’s one of the roomiest car seats you can get there’s space for the driver as well

It keeps infants and up to 10-year-old kids safe


It’s heavy bulky and no way you can do three-way across

It has a steep learning curve

#4 Graco 4Ever DLX 4 in 1 Car Seat

Graco 4Ever DLX 4 in 1 Car Seat“Mommy, what was that Big Bang?”

This incident happened with my sister in law. She was taking her 4-year old daughter home. It was the usual commute. Then all of a sudden, an SUV smashed into them head-on.

The impact was loud. The airbags exploded, protecting the mother. The front of the car twisted and bent to an unnatural angle. It wasn’t over yet.

There was so much energy during the crash that the car spun out to oncoming traffic, and all their tires exploded.

When everything went quiet, then the little girl asked what has happened. She was the lucky one. There wasn’t a scratch on her. Her mother wasn’t that lucky. She had a broken nose and a few cuts, so she ended up in the hospital. My niece was going to kindergarten the next day.

The Graco 4Ever was tested in a real crash, and it has passed with flying colors. Being an all in one car seat, it caters to infants who are just 4 pounds up to 120 pounds. For those who want to do extended rear-facing, it will be possible up to 40 pounds in this car seat.

Since this car seat caters to kids this small, then accidents and spills will be all too common. They have a RapidRemove system. The cover with the Graco 4ever comes up in a matter of seconds. After that, you put it in the washing machine, and it will be good as new.

It has a cool look to it. The Graco 4Ever is a good all in one car seat because it’s safe, give you great mileage for the money, and it’s easy to wash.


It’s easy to install might be the easiest of them all

No more rethreading the straps ever

The fabric removal is super-fast


The straps tangle up too fast, and it’s a pain to undo them with a protesting child

The cup holders fall off way too easily.

#5 Diono Radian 3RXT All-in-One Convertible Car Seat

Diono Radian 3RXT All-in-One Convertible Car SeatThis incident happened with a friend of mine. Father and son were on their daily commute. The little one was in the back, staying quiet. Everything was the same old, same old until they crossed a faithful intersection.

Another driver ran the red light. The impact was unavoidable. Their van got hit from the side. The collision happened on the same side where the child was sitting. The metal bent and the glass shattered. The bang was loud and scary. The front of their car was absolutely destroyed.

The airbags protected the father, and the Diono Radian kept the boy safe. The father had a few bruises while his son didn’t even have a scratch on him.

This Diono Radian, all in one car seat, has many things going for it. First of all, it looks cool. Kids will love it. All the color combinations are breathtaking. They went overboard with the color scheme.

It caters to infants as low as 5 pounds up to 120 pounds. You can do generously extended rear-facing up to 45 pounds. Besides all this, it has a narrow profile, so you will be able to do 3 across with ease.

The Diono Radian has some great safety features. The core is made out of steel, and there’s some good side impact protection.

It’s hard to believe, but the Diono Radian is foldable so you can take it with you on the plane. It’s FAA approved.

The Diono Radian 3RXT is one of the best all in one car seats you can choose if you want it to be able to do 3 across.


Finally, a car seat where the baby isn’t slouching or sliding down

It’s lightweight and easy to move around

It’s soft and padded plus it comes with side impact protection


The gray fabric is not that stain friendly

You can’t remove the fabric; the only solution is spot cleaning.

#6 Evenflo Symphony Elite All-In-One Convertible Car Seat

Evenflo Symphony Elite All-in-One Car SeatThe Evenflo Symphony is the most budget-friendly All in one car seat you can buy. Now, this is not a cheap car seat, but it’s more affordable than the rest above.

They made the cover material nice and plush. It’s so soft, not like the other scratchy types with other brands.

Being an all in one car seat, this will be the last one you have to buy. It caters to infants who are at least 5 pounds all the way up to 110 pounds.

By far, the Symphony has the simplest install from the all. It’s so easy that even grandparents with arthritis will be able to install it perfectly. For more car seats for grandparents check out the car seats for grandparents reviews page. Their secret is the ratchet system. Using the ratchet, you won’t need any force, and you can make the car seat 3x tighter than with other brands.

The all in one car seats have a long expiration date around 10 years or so. They have used good materials because they are getting a hell of a beating. The cover can be easily lifted, and machine washed. Accidents can happen with all kids. So as a parent, you need to know ahead of time how easy it is to clean after them.

Evenflo Symphony Elite is the best budget all in one car seat that you can get.


The latch system after you got used to it it’s amazing

All in one car seat that protects your little one from 4 to 120 pounds

Proudly made in the USA


Shallow and bad cup holders they fly around at their own will

It’s bulky, and you won’t be moving it around after the install

Buyer’s Guide

That was some list, huh? I also love to over-deliver. So I was thinking about what could help you the most. I concluded that a buyer’s guide would be a great bonus to add. Maybe you’re planning to add more kids to the family, and avoiding the whole week long searching and sifting here’s a simple go-to list.

Now before we get to that, there are two important tips that I want to share with you.

The first one is related to the car seat’s position. Not all spots in the car are equal. There are safer ones than others. The most protective place for your child is in the middle of the car. The truth is that’s not possible for many parents. Here’s the second safest place which is behind the driver.

As for the second tip, it’s related to the installation. Many car seats in the US are not properly installed. This means that they are not giving the best protection possible. So if you want to be extra sure about the mounting, you can get a second opinion from a licensed professional.

Lately, Amazon started offering this service for a fee.

Now let’s get this buyer’s guide started.


Safety is the #1 concern for all parents. I know that comes at a price, but can you put a price on your child’s head? My advice to you is to get the best protection that you can afford.

Now all car seats are safe on the market since they passed the government test. So you can’t go wrong with them. Indeed, some brands went overboard with protection, while others have barely passed the standards.

All car seats have front and rear collision protection. Yet this is not enough. More and more start to add side impact protection (SIP). And a handful of them offers rollover protection.

Size Limits

You need to know this ahead of time if you want to save some money. These car seats aren’t cheap. The best way to save money is by using it as long as possible. This is what I call mileage.

Infant carriers are the worst because they are outgrown so fast. Yet they have their own unique advantages. Also, in this section, you can check out if they offer extended rear-facing mode.


Getting the right install is crucial. Remember that most car seats are poorly installed. From all the car seats listed above, only the Maxi Cosi is tricky to get installed. The rest is quite easy.

All brands strive to get the installation as easy and effortless as possible. With the new iterations, they are getting there.


All in one car seats cater to the very young up to young adults. There’s one thing certain of kids. They have accidents, and they make a mess. So it’s good to know how easy it is to remove the cover and how washable it is.

From the list above, they are all the same.

This is the end of my buyer’s guide. If you like, it put it to good use.


We have reached the end of the Best All In One Car Seat article. It was a long trip. I hope you learned a lot from it.

By now you should know which car seat is the best fit for you. Now it’s your turn to get the right one. Also, take action because last time I’ve checked the stocks were running low

If you want to share your thoughts or ideas, you can do it by leaving a comment below.

Frequently Asked Questions (FAQ):

What is the safest all in one car seat?

The safest all in one car seat is the Britax One4Life ClickTight All-in-One Car Seat.

Are all in one car seats worth it?

All in one car seats are worth it because they will be the first and last car seats you have to ever buy. They are pricier in the beginning but you save money over the years.

What is the best 4 in 1 car seat?

The best 4 in 1 car seat is the Chicco Fit4 4-in-1 Convertible Car Seat.

Which car seats didn’t make it on the Best All-In-One Car Seats list?

These seats didn’t make the cut: safety 1st grow and go belt-positioning booster seat, Graco extend2fit convertible car seats.

What is the expiration date for all-in-one car seats?

Typically for these car seats is 10 years. Other car seats like the high-back booster seat with head support have the same 10 years of use. For example, a rear-facing seat like the infant car seat has less around 3 to 5 years. Convertible car seats are known for having decent usage but nowhere near 10 years. The 10 year expiration date applies to belt-positioning booster seat and backless booster seat.

What are the weight limits for these all in 1 car seats?

The weight limits change from model to model. For example the weight range for a convertible seat is 20 to 65 pounds. The upper weight limit for rear-facing mode is 120 pounds. This 120 pounds limit applies to backless booster seats, belt-positioning booster booster seats and booster mode in general. By getting these convertible seats you’re getting many years of use. With many years of use you will be saving money in the long run. Since the weight limit is so high the child can use it until 12 years old. The rear facing weight limit is the same for the 3 in 1 like the all in one car seat. The graco extend2fit rear facing weight limit is 40 lbs (50 pounds). For the clek foonf rear facing weight limit is 40 lbs. The graco extend2fit comes with a leg rest which provides extra comfort for your child. The weight limits for the nuna rava are the same.

Can these best all in 1 car seats be considered as an infant car seat?

The all in one car seats cater to infants. So you can consider them as an infant car seat but you won’t be able to move them around. They are known for ease of use. And are quite comfortable with two cup holders.

Can you fit three across or do they have a slim design?

Yes there are a few high-back booster car seats and convertible car seats that have a slim design and you can do three across. Backless booster seats have a slim design. The best car seat from above is the Diono Radian 3RXT which allows to fit three across.

Which car seat from these best all in 1 seats has the best car seat safety features?

When it comes to car seat safety features the Graco 4ever takes the lead. But all car seats from above have high safety standards. Even the best convertible car seat has side impact protection. As the child grows you have to adjust the recline positions. Plus most of these best convertible car seats have no-rethread harness. The easy installation comes by default. When you’re selecting the baby gear make sure it has side impact protection and eps foam. The latch system is an extra bonus and there’s the vehicle seat belt installation for the back seat.

How do you keep your child in rear-facing position the longest?

To keep your child in rear-facing mode as long as possible you have choose a car seat that  allows rear facing for extended periods of time. The Graco and the grow and go has some good options and the Diono Radian is good as well.

How do you install these best allin-one car seats on the back seat?

The back seat is the preferred way for forward facing booster mode. Keep in mind the weigh and height limitations for backless booster mode. Typically you can use the latch connectors or the seat belt. Now for ease of use the latch system is the best. Booster seat mode can only be tightened with the seat belt. Make sure the recline position is set to the default. Luckily all the seats above are no rethread harness.

What kind of features you should look when buying the best all-in 1 car seat?

It’s preferred that these seats should do both forward facing and rear-facing mode. Keep in mind to check for side impact protection. The seat cover should be machine washable. The seat pad should be machine washable. If you have multiple car options it will be super easy to swap to forward facing mode from the back seat. As your child grows adjust the harness straps. The harness and headrest should be interlinked so when you adjust one the other is adjusted as well. Also make sure you check out the installation videos side by side. For the installation you can use the vehicle seat belt or the latch system. As you know the seat belt installation is finicky but one thing that helps is the seat belt lock.

What would be a good alternative for these 3 in 1, 4 in 1 and all in one car seat?

Good alternatives would be the: clek foonf rear facing forward facing center seat, graco extend2fit high back booster, maxi cosi pria 85 max infant car seats, nuna rava, britax boulevard clicktight, graco 4ever, britax marathon clicktight rear facing forward facing center seat, chicco nextfit zip infant seat, britax emblem belt positioning booster seat. The thing with budget friendly car seats is that may not offer the right protection. If you’re still looking for budget friendly car seats here’s the quick list: nuna rava infant seats, graco extend2fit and the clek foonf.

What are the weight limits for the (3 in 1) all in one car seats?

The rear facing and forward facing weight limits for these car seats are quite similar. For example for the clek foonf it’s 40 lbs.

What kind of safety features do these rear facing position and forward facing car seats have?

When it comes to safety features I’ve only picked the top of the line. They all have passed the government safety standards.  It’s also a great idea to have sufficient leg room for the child and sufficient leg room for the front row. The car seat model like the nuna rava comes with a load leg. Which offers extra protection. The headrest positions and the shoulder strap positions are adjustable. There’s no rethread harness. The seat belt installation is a good option if you don’t have the latch system. The chest clips should go below armpit levels. The seat cover should be washing machine safe. The harness holders and harness straps can be hidden when they are not in use.

What makes all in one car seats (all in one seat) comfortable?

Comfortable all in one car seats (all in one seat) have this in common: there are minimized head slump, six recline positions or even seven recline positions (recline angles), adjustable shoulder straps, memory foam, machine washable cover, two cup holders or even rotating cup holders, body pillows, adjustable headrest, adjustable torso, easy to install, easyclick latch system, crotch strap, cup holder, extended height limit, multiple headrest positions, removable head support, advanced side impact protection these would be the key features. Besides being a comfortable car seat (comfortable ride) it has convenient features such as accurate fit and added safety features like: easyclick latch system, forward facing five point harness, maximum weight limit increased, passed all federal safety standards, comfy seat bottom, washable seat pad and seat’s harness, belt lock off, belt positioning booster mode, air protect, four recline positions, easy to install, the seat meets all child passenger safety and federal safety standards, steel reinforced frame.

Why are graco car seats so popular?

The all in one seat like the graco 4ever is so popular it comes with multiple functions like: forward facing car seat, forward facing harness booster mode, backless booster seat mode, it follows the child’s growth, it serves as convertible seat in rear facing seat mode, it also allows extended rear facing seat options, It’s one of the safest seats and car seats of 2021. For new parents who want a new car seat (new seats) this is ideal because it’s affordable which means if you need to buy multiple car seats (multiple seats) it will be the proper fit for most vehicles. Also make sure you have it installed properly. It’s a little known fact that these all in one car seats your child will ride safely with a secure installation thanks to the rigorous crash tests. After multiple crash tests the air protect system kept the dummy safe. The crash forces forces were dissipated during the crash tested and these can be seen in the crash test results. It will accommodate children up to the age limit thanks to the adjustable headrest, adjustable torso and the headrest can be adjusted in one motion while other seats don’t have this. As a child safe convertible seat they will be in the correct position thanks to the easyclick latch system in forward facing position. This highback booster might not fit in small cars and smaller cars especially having three seats across it might be a too tight fit. This baby gear will accommodate children from birth to booster seat age. The only car seat that is like this all in one car seats can be found at maxi cosi. When buying multiple seats you want to save as much money as possible this is where an all in one seat will keep your child correctly in place and also will keep your child comfortable in rear facing harness and forward facing seat mode while still not being a burden on your budget.

What’s the difference between an all in one seat and forward facing highback booster seat?

The difference between a forward facing highback booster seat and all in one car seats is the time you use it. Highback booster is from 3-5 upward and the all in one is from birth. After secure installation your child will ride safely even in rear facing harness using the child restraint. Both you and your child will ride in style thanks to this baby gear. The cup holder is a great addition and the adjustable headrest, adjustable torso are great comfort increasing perks.

Last Updated on October 17, 2021