6 Best Cybex Car Seats of 2021 [For Infants & Toddlers]

Cybex car seats are designed with safety in mind. Some of the CYBEX seats are compatible with SensorSafe technology built into the harness clasp. This feature connects with your phone and send alerts so that you know if the temperature of the seat is elevated, the harness comes unhooked, or when the child has been seated for an extended period of time.

Cybex seats have additional linear side impact protection which absorbs energy from a collision and directs it away from the child. Multiple position headrests and no-rethread harnesses ensure that the seat can fit the child securely.

Cybex offers infant seats that have a full recline option for when the seat is outside of the car. The Cloud Q infant seat is excellent for premature infants due to its ergonomic positioning. The base of the infant seats features a load leg base.

This extends from the base of the car seat to the floorboard of the car to stabilize the seat in the event of a collision. These seats also have a seat belt guide for use when the base is not available as in a taxi.

The company also has convertible car seats rated from 4 to 120 pounds and up to 10 years. Cybex’s convertible car seats are equally safe, incorporating steel frames, side-impact protection, easy-to-change harness positions, and SensorSafe connectivity.

Our extensive research and testing have shown that Cybex’s best convertible car seat is the Gold Eternis S All-in-1. This seat accommodates infants as small as 4 pounds up to children weighing 120 pounds. The headrest can be modified for your child’s best fit.

This convertible seat uses the SensorSafe technology so that you can sync the car seat with your phone allowing you to keep an electronic eye on your child’s safety.

Continue reading for a detailed comparison of each of the Cybex car seats to help you make the best choice for your growing family.

Best Cybex Car Seats 

Car Seat Model
Expiration Date (after date of manufacture)
Aton M Infant Seat
27 in. x 17 in. x 20 in.
6 years
Cloud Q Infant Seat
27 in. x 23 in. x 18 in. 
6 years
Sirona M Sensorsafe Convertible Seat
29 in. x 20 in. x 18.5 in.
8 years
Eternis S All-in-One Seat
25.5 in. x 20 in. x 25.3 in.
10 years
Solution Z-Fix Booster Seat
24.6 in. x 20.8 in. x 15.9 in.
8 years
Agis M-Air Travel System
Stroller: 30 in. x 22.5 in. x 14 in.

Car Seat: 18 in. x 17 in. x 26.2 in.
6 years

1. Cybex Aton M Infant Seat – Super Durable

The Aton M comes in seven different options with two different price points. It comes with Cybex’s patented linear side-impact protection as well as 11 different headrest positions to ensure the right fit for your new babe.

Energy Absorbing 

The seat’s shell is energy-absorbing, which is really helpful in case of a car accident. To add to the protection factor, the Aton M also comes with an XXL sun canopy with UPF 50+ protection. This infant seat will accommodate your little one from birth until they hit 35 pounds.

This is a double-win because its 4-pound minimum makes it perfect for preemie babies, and the 35-pound maximum helps reinforce the idea of extended rear-facing. The seat also lays flatter than any other infant seat, which is another major plus if you have a preemie. The seat insert is removable, and the seat itself is compatible with all Cybex travel systems as well as a few other select brands.

What We Like 

  • Great preemie car seat
  • Several colors to choose from
  • XXL canopy to protect from the sun
  • Super durable
  • Modern design

What We Didn’t Like 

  • Base is difficult to install
  • Pricier than other seats
Cybex Aton M Rear Facing Infant Car Seat with SafeLock Base,...
10 Reviews
Cybex Aton M Rear Facing Infant Car Seat with SafeLock Base,...
  • CYBEX’s Linear Side -impact Protection System (L.S.P. ) absorbs up to 25% more impact forces in...
  • 11- position height -adjustable headrest with an integrated no -rethread harness that grows with...
  • Energy absorbing shell helps absorb the forces of an impact and protects the baby

Last update on 2021-12-01 / Affiliate links / Images from Amazon Product Advertising API

2. Cybex Cloud Q Infant Seat – Great for Preemies

This infant seat made our list because of its ability to accommodate preemie babies. Unlike other infant seats on the market, this one in particular has the ability to lie flat when not in the car.The lie flat position is optimal for preemie babies as it keeps their airways open.

Like our other infant seat pick, the Cybex Cloud Q also comes equipped with linear side-impact protection as well as the XXL sun canopy. The infant insert is removable as well and the cover can be removed and run through the washing machine. The Cloud Q seat also comes in several different patterns as well as two different fabrics: “comfort” and “plus.” The harness straps are extra wide to keep baby more secure and comes with harness pads as well for comfort.

What We Like 

  • Machine-washable cover
  • Perfect for preemie babies
  • Extra wide harness straps are great for safety
  • 11 different headrest positions
  • Removable insert

What We Dislike 

  • Very pricey
  • Heavier than other seats

Last update on 2021-12-01 / Affiliate links / Images from Amazon Product Advertising API

3. Cybex Sirona M SensorSafe – Best Convertible Cybex Seat

If you’re looking for a modern-designed car seat that will last with your little one, this convertible seat is a must-see. The Sirona M will accommodate your child from 5 pounds up to 65 pounds. It comes equipped with Sensorsafe technology, or you can opt for the model without Sensorsafe.

Sensorsafe technology is a state-of-the-art system that is located on your child’s harness. You sync the technology up with an app on your phone, and you’ll get notified if anything seems wrong. For example, some notifications may be that they’ve been sitting for too long, or the harness buckle has become undone.

The seat also comes with linear side impact protection and exceeded all US safety standard testing.The infant insert that comes with the Sirona M can be used up until your baby reaches 11 pounds. After that, it’s safest to remove the insert before letting your child use the seat again. The seat itself can be reclined in ten different positions.


  • Sensorsafe technology keeps child safe
  • Ten different recline positions
  • Magnetic belt holders
  • 12 different headrest positions
  • Removable cup holder


  • App can malfunction sometimes
  • Crotch buckle is difficult to release
CYBEX Sirona M with SensorSafe Convertible Car Seat, 5-Point...
137 Reviews
CYBEX Sirona M with SensorSafe Convertible Car Seat, 5-Point...
  • CYBEX SensorSafe Technology: Integrated into the 5-point safety harness chest clip, data syncs thru...
  • Award-Winning: Sirona M with SensorSafe awards for 2018: the BUMP Best of Baby Award, the Best of...
  • LSP (Linear Side-Impact Protection): Absorbs up to 25% more impact in the event of a side collision...

Last update on 2021-12-01 / Affiliate links / Images from Amazon Product Advertising API

4. Cybex Eternis S All-in-One Car Seat – Best All-in-One Seat

This all-in-one seat comes in four different color options and can accommodate your child from 5 pounds until they reach 65 pounds as a convertible.Once they outgrow the limitations, the seat can then be used as a belt-positioning booster until your child reaches 120 pounds.

This gives you roughly 10 years of use, which means you can buy this as a one-and-done baby purchase. Like the others on our list, the Eternis S comes with linear side impact protection. The seat has three different positions and 12 different headrest adjustments, so it can grow with your child. This one also comes equipped with Sensorsafe technology and has a removable cup holder as well.

What We Like 

  • Only car seat you’ll need to buy
  • Sensorsafe technology
  • Removable cup holder
  • Magnetic belt holders
  • Easy to install

What We Don’t Like 

  • A little pricey
  • Sensorsafe may be difficult to set up initially
CYBEX Eternis S with SensorSafe, Convertible Car Seat for Birth...
147 Reviews
CYBEX Eternis S with SensorSafe, Convertible Car Seat for Birth...
  • GROWS WITH YOUR CHILD: Convertible car seat designed to grow with your child from 5 to 65 pounds....
  • SAFETY FEATURES: Keep baby safe with 5-point safety harness and linear side-impact protection....
  • ADJUSTABLE HEADREST: 12-position height-adjustable headrest offers comfortable protection as your...

Last update on 2021-12-01 / Affiliate links / Images from Amazon Product Advertising API

5. Cybex Solution Z-fix Booster Seat – Lasts a Long Time

The Solution Z-fix is a good booster seat for children between the ages of 3-12.It comes equipped with a patented reclining headrest as well as linear side-impact protection. It’s also equipped with ISOFIX to make installation much easier and hassle-free.

The fabric has an air ventilation system, which is nice because you won’t have to worry about your little one sweating and being uncomfortable. The fabric cover is also removable and machine-washable.

Unlike other booster seats, this one can actually be installed via the LATCH method. It’s worth it to keep in mind that LATCH technology shouldn’t be used once the combined weight of the seat and your child has surpassed 65 pounds.

What We Like 

  • Air ventilating fabric
  • Easy to install via LATCH
  • Can be used until child turns 12
  • Comfortable fabric
  • Easy to adjust settings

What We Don’t Like 

  • Pricey for a booster seat
  • No cup holder
Cybex Solution Z-fix Booster Seat in Stardust Black
5 Reviews
Cybex Solution Z-fix Booster Seat in Stardust Black
  • Patented reclining headrest prevents the child's head from falling forward while asleep so the head...
  • With one hand, simultaneously adjust the height and width of the seat back into 12 different...
  • Linear Side-impact Protection system absorbs up to 25% more impact forces in a collision*

Last update on 2021-12-01 / Affiliate links / Images from Amazon Product Advertising API

6. Cybex Agis M-Air Travel System – Easy to Handle Cybex Travel System

Of all the travel systems on the market, this one makes our top list because of its style and functionality. The never-flat wheels are designed for maximum maneuverability and the stroller itself can be folded in half with one hand.

The stroller’s seat can also be reclined using only one hand as well. These features make this one an extremely convenient option for parents. The travel system comes with the stroller, the appropriate car seat base, and the Aton 2 rear-facing infant seat.

Adapter Available

However, you may choose to use a different infant seat with the appropriate adapter. Keep in mind though the travel system doesn’t come with any adapters for other car seats.

The Aton 2 car seat does come with a load leg base to keep the seat more stable while being used in the car. The load leg base is helpful because it prevents the seat from slipping about in the case of force.

What We Like 

  • Comes with everything you need
  • Handles all terrain well
  • Sleek, modern design
  • Easy one hand closure and adjustments
  • Car seat has a load leg base

What We Don’t Like 

  • Higher end of the budget
  • Difficult to remove seat from stroller
Cybex Agis M-Air 3/Aton 2/Aton Base 2 Travel System, Moon Dust
51 Reviews
Cybex Agis M-Air 3/Aton 2/Aton Base 2 Travel System, Moon Dust
  • 3-in-1 travel system: Can be transformed in to a travel system with one of CYBEX infant car seats or...
  • Quick one-hand fold: Can easily be folded into a compact package with one hand
  • Stand-alone function: Free-standing when folded and can be stowed away compactly

Last update on 2021-12-01 / Affiliate links / Images from Amazon Product Advertising API

Buyers’ Guide

Cybex is a growing baby brand that operates under Goodbaby International. Since they were founded in 2004, Cybex has designed baby travel systems , strollers, and most popularly, car seats.

Additional Safety Features

All Cybex car seats come with a patented three-position headrest. The side-impact protection inside the headrest safely shifts the balance point of your child’s head to prevent their head from falling forward if they fall asleep. Not only will this allow for more comfort, but it keeps them safer as well.Most Cybex car seats will accommodate your little one while rear-facing up until around four years old.

The rear-facing position is the safest for any child, which is why so many brands are making more products for extended rear-facing mode. The unique thing about Cybex seats is that they come equipped with an impact shield. This shield is meant to give added protection if you need to switch your little one to forward-facing mode before they max out.

Along with these two safety features, Cybex seats are also equipped with linear side-impact protection and seat-to-chassis technology as well as Sensorsafe technology for some models.

Weight and Dimensions

A seat’s size and shape are huge deciding factors for parents. Most Cybex car seats are much lighter than seats of other brands, which is nice if you’re looking for a light infant seat or you don’t want to try installing a massive convertible seat. When choosing your car seat, make sure you keep in mind the size of your vehicle and the depth of your vehicle’s backseat.

Cleaning Convenience

If you’re an “on-the-go” family, ease of cleaning should be a major deciding factor of which seat you choose. When looking around, make sure to take note of special washing instructions and whether or not the seat’s cover can be run through the dryer.

Ease of Installation

Each Cybex car seat comes with LATCH compatibility. This makes them much simpler to install, which saves plenty of headaches later on.

An easy to install car seat is also important if you have to switch the seat between vehicles.


Last, but not least, your budget shouldn’t be ignored. If you’re looking to stay within a certain amount, Cybex car seats have varying prices. Even if you decide to go with a less expensive option, the safety features aren’t compromised to make up for a low price.

How To Install Cybex Car Seat

Frequently Asked Questions

Q: How do you use a Cybex car seat?

A: Infant seats made by Cybex must be installed with the appropriate base or by using the appropriate belt paths. Convertible, all-in-one, and booster seats can be installed using belt path or LATCH technology.

Q: Where are Cybex car seats made?

A: Cybex car seats are designed and made in Germany.

Q: How do you take the base off of a Cybex infant car seat?

A: To remove a Cybex infant seat from its base, you must push down on the green button and the grey button on the front of the seat. You’ll need to remove the front of the base before you’ll be able to lift the seat out.

A Seat For Everyone

All in all, Cybex is a stellar brand when it comes to car seat safety and innovation. You could make the decision to buy a single car seat for each stage or you could buy a convertible car seat that grows with your child all the way up to 10 years old, or even older. The choice is ultimately yours whether you want to make the investment once or each time they outgrow their car seat. 

Additionally, the CYBEX car seat has unmatched safety features such as a 5-point safety harness and linear side-impact protection that absorbs up to 25% more impact. It also has a 12-position height-adjustable headrest to grow with your child. It’s not cheap, but the investment is only once as opposed to once every couple of years.

Welcome to my car seat blog! As a mom of 3, I put together with other hard-working moms a highly informative one-stop car seat resource, full with many reviews and buyer guides. I hope you find it invaluable. Thank you for trusting me & my team! - Keren

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