If you like the idea of having one Convertible Car seat from infant until the last day a child seat is required, the Graco 4ever All-in-One Convertible Car Seat will be the best combination car seat for you. 

An all-in-one, this car seat gives you 10 years of use from 4 to 120 pounds in four modes - infant rear-facing, toddler front-facing, booster seat in high back and backless belt-positioning mode.

For an all-in-one, Graco 4ever is surprisingly small at 20" wide, 24" tall and 21.5" front to back. We especially like the 10-position headrest and easily adjustable harness system. 

While it will definitely fit in most small cars, we don't think it is one of those "fit-3-across" type because for that, you will need something narrower
like this. Nevertheless, for one that holds up to 120lbs, Graco 4ever  weighs 23lbs only so it is definitely one of the best booster car seat around.

Keep in mind that the Graco 4ever is not meant for portability though (there are other car seats meant for that) because it is not one of the lightest. Once installed, you will want to treat it as a permanent feature of your car.

Graco has many other different models but in terms of choosing the best Graco convertible car seat, we think the 4ever All-in-One is the best rated convertible car seat.

With this one, you truly do not need any other attachments/add-ons to last you a good old ten years!

Looking for the best budget convertible car seat? Evenflo Tribute LX Convertible Car Seat will surely delight you!

This convertible car seat has a width of 18.5" only, making it one of the best convertible car seat for compact car.

It is also the best lightweight car seat weighing 9.1lbs only, so you can certainly move it from car to car without straining the muscles. Because it's so light, it is regarded as the best travel car seat by many parents. 

Having said that, the Tribute LX is not packed with too many add-ons or cushioning (hence the weight). You may find your little one kind of swimming in the seat if s/he is on the smaller side because the harness lacks additional padding.  

Don't get us wrong, there is nothing wrong with the cushioning of this car seat. It is just that most other brands provide additional ones to give better support, which is also reflected in their prices.

Given the price of the Evenflo Tribute LX, you can easily solve this by buying one of these bestsellers to wrap around the harness and it will still be cheaper than other car seats.

Price aside, the quality of this car seat will exceed your expectation.

Made in the USA, it meets all standard safety requirements (and more) as it is designed and tested for structural integrity at energy levels almost 2x the Federal crash test standard. 

This car seat is reclinable for rear-facing use, but you do have to adhere to the weight requirements of 5-40lbs and it mostly fits babies age 18 months or below.

All in all, for what you pay for, the Evenflo Tribute LX Convertible Car Seat meets all requirements and more.

Not only is it the best cheap convertible car seat, it is also the best value convertible car seat that you will not regret buying.

Remember we mentioned in the beginning of this review that the safety angle of rear-facing car seats is one of the reasons they are troublesome to fit into small cars? 

Chicco addresses this issue with its My Fit Zip Air Car Seat. It didn't do this by making the Next Fit Zip the smallest or narrowest, although at 19" wide, it is still narrower than most average convertible car seats.

Rather, it boasts a 4-position levelling system to allow for an accurate fit in a wide range of vehicles, which include smaller and compact cars.

When you have that many reclining options, you can certainly find one angle that fits in your small backseat (rear-facing, on top of that) without compromising leg room in the front seat.

This is the only convertible seat that provides that many recline options when most only have 3 or 5. Such adaptability is exceptional, really. 

It is also one of the best convertible car seat for tall babies because at 26", it is taller than most convertible car seats, making it comfortable for the taller ones.

We cannot mention the Chicco My Fit Zip without mentioning its ease of installation.

It has two ride right bubble levels to show you the correct seat angle in both rear-facing and forward-facing modes. You won't be cursing under your breath while installing this one, we guarantee!

This is definitely one of the best small convertible car seat that makes full use of every millimetre of your compact car without compromising your little one's comfort.

If you are looking for the best reclining car seat , you won't go wrong with the Chicco My Fit Zip.

Safety 1st Grow and Go 3-in-1 Convertible Car Seat is another one of the best rear facing car seat for small car that we would recommend.

This convertible car seat is designed to last through all your firsts with your child.

Featuring extended use at each stage, you get three modes with this car seat - rear-facing from 5-40 pounds, forward-facing from 22-65 pounds and belt-positioning booster to up to 100 pounds. 

Similar to Chicco My Fit Zip, this is for those who find that they have to compromise the front seat's leg room.  

The Grow and Go is designed to prevent this by allowing up to 7" of extra leg room for parents sitting in front when placed rear-facing. 

For the newborns, this car seat also comes with two comfortable grow-with-baby pillows to give a snug fit. Once baby outgrows them, they can be easily removed. 

We love the harness holders of the Grow and Go. It is designed in a way that the harness is always kept in an open position so that it's easy to get your child in and out of the seat.

Both harness and headrest can also be easily adjusted in one simple step. We think this is definitely one of the best harness booster seat too when your child utilises it. 

Safety 1st Grow and Go is among the best 3 in 1  car seat in the market. The promise of having 7" extra leg room makes it an attractive option, definitely the best rear facing convertible car seat for small car that you can't resist!