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Cybex Aton G2

The Cybex Aton G2 rear-faces up to 30 lb, is 17.5 in wide, and weighs 9 lb, per Cybex. A light Cybex infant carrier with a load-leg base and automatic harness height adjustment through the headrest.

  • $399.95List price
  • 30 lbRear-facing to
  • 9 lbSeat weight
  • 17.5 inWidth
Check price at AmazonSee it on Cybex's site

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When does it expire?

All infant car seats

Aton G2: key facts

  • The Cybex Aton G2 rear-faces from 4 to 30 lb and 17 to 32 in tall, per Cybex.
  • Outgrown by height: "Top of child's head is a minimum of 2.5 cm (1 in) below the top of the Infant Car Seat or Headrest, WHICHEVER IS HIGHER."
  • It installs with LATCH, seat belt or baseless (locking belt).
  • Cybex says it expires 6 years after the date of manufacture.
  • Cybex lists it as certified for aircraft ("The ATON G is certified for aircraft use if used WITHOUT the Base.").
  • It's 17.5 in wide at the widest point and weighs 9 lb without the base.

From Cybex's manual and published specs. Always follow the limits on your seat's labels.

How the Aton G2 stacks up

Against the 74 infant car seats we track. The shaded band is where the middle half of them fall; the dot is this one.

Expiration6 years

Within the typical range for infant car seats (6 years to 8 years).

This one
6 yearsmiddle 7 years10 years
Rear-facing limit30 lb6th highest rear-facing limit of 73

The same as most infant car seats (30 lb).

This one
22 lbmiddle 30 lb35 lb
Width17.5 in25th narrowest of 41

Within the typical range for infant car seats (16.9 in to 17.5 in).

This one
14.8 inmiddle 17.3 in19 in
Weight9 lb25th lightest of 58

Within the typical range for infant car seats (8.2 lb to 9.8 lb).

This one
6 lbmiddle 9 lb29 lb
Price$399.9537th lowest price of 58

Within the typical range for infant car seats ($219.99 to $449.99).

This one
$74.99middle $329.99$850

Aton G2: generations

From each maker's published specs.

What sets the Aton G2 apart

Measured against the 74 infant car seats we compare, from each maker's published specs.

  • Width: 17.5 inin the middle half of the 41 infant car seats that publish it (16.9 in to 17.5 in)
  • Weight: 9 lbin the middle half of the 58 infant car seats that publish it (8.2 lb to 9.8 lb)

Next to its closest matches

  • Clek LiingoNext to it, the Aton G2 is 3 years shorter before it expires; 0.6 in wider; has base included (the Liingo doesn't); has load leg (the Liingo doesn't).
  • Maxi-Cosi AmbraNext to it, the Aton G2 is 2 years shorter before it expires; 2 lb heavier.
  • UPPAbaby Aria V2Next to it, the Aton G2 is 1 years shorter before it expires; 0.5 in wider; 3 lb heavier.

Flying with the Aton G2

Cybex's label: “The ATON G is certified for aircraft use if used WITHOUT the Base.” It is 17.5 in wide at its widest point.

What airlines say about car seats:

  • American: “Each ticketed customer is allowed 1 stroller and 1 car seat to be checked free of charge” “If an unoccupied, adjoining seat is not available, the gate agent will check the safety seat to your final destination.” Source
  • Alaska: “We will transport your child's car seat and stroller free of charge as checked baggage.” Source
  • JetBlue: “Checking a child safety seat will not count towards your checked baggage allowance and there is no fee assessed” Source
  • Spirit: “One (1) car seat will be accepted per child as checked baggage at no charge.” Source
  • Frontier: “strollers and car seats can be checked for free.” Source
  • Allegiant: “There is no charge for checking or gate checking one car seat per fare-paying passenger.” Source
  • Breeze: “Child seats may be carried on board the aircraft if a seat has been purchased for the Infant or Child” Source

Quoted from each airline's page as of 2026-11-02.

Listed features

  • Load leg
  • Light 9 lb carrier
  • Flame-retardant-free fabric

Worth checking

  • 30 lb limit
  • Short 18-month age guideline

Where to buy the Aton G2

Prices and availability change. We may earn a commission from some links.

good to know
  • Check for recalls: Search the agency's recall list with the model number and date code from the label: NHTSA recall search.
  • Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Full specs

Cybex Aton G2
TypeInfant car seat
List price$399.95
Rear-facing weight4–30 lb
Rear-facing height17–32 in
Seat weight9 lb
Width17.5 in
Head ruleTop of child's head is a minimum of 2.5 cm (1 in) below the top of the Infant Car Seat or Headrest, WHICHEVER IS HIGHER.
Base includedYes
Newborn insertInfant Insert: manual recommends using it until the child weighs about 11 lbs (5 kg) or about 3 months
InstallationLATCH, seat belt, baseless (locking belt)
Load legYes
RotatesNo
Harness heights11
Recline positions4
Works with strollersCybex strollers with included adapters; other brands only with their own adapters
Stroller adaptersOther brands: maker says select stroller brands accommodate Cybex infant seats with their own adapters (no list given)
Handle in the carManual: 'ALWAYS have the Handle in one of the five LOCKED position while using this Child Restraint in a vehicle.' Positions: 0 Anti-Rebound (optional), 1 Carry, 2 Intermediate, 3 Intermediate, 4 Resting.
Aircraft labelCertified for aircraft, per the maker
No added flame retardantsYes
Expires after6 years

Compare the Aton G2 with

How each closest rival differs from the Aton G2, from the makers' specs.

Ask the meadow

Aton G2: questions answered

From Cybex's published specs, last checked 2026-11-06.

Does the Cybex Aton G2 rear-face longer than other infant seats?

24 of the 97 infant seats we track rear-face to a higher weight than its 30 lb. The highest is the Baby Jogger City GO 2 at 35 lb. NHTSA: stay rear-facing "until he or she reaches the top height or weight limit allowed by your car seat's manufacturer." (NHTSA)

Will the Cybex Aton G2 fit three across or in a small car?

It's wider than 82% of the infant seats we track, at 17.5 in. The narrowest is the Evenflo NurtureMax at 14.8 in. Fit depends on your vehicle; check each seat's manual and your vehicle manual. Car seat use and installation: see NHTSA's car seat page, which also lists free car seat inspection by certified technicians. Check the label and the maker's instructions, and ask your pediatrician about your child.

Is the Cybex Aton G2 heavy to carry?

With a 7.5 lb newborn inside you'd lift about 16.5 lb, and that grows as your baby does. The carrier is lighter than 48% of the infant seats we track. See the lightest infant seats.

Can you use the Cybex Aton G2 in a taxi or Uber without the base?

Yes. Cybex lists a baseless install with the vehicle belt; see the manual for the belt routing.

Can you bring the Cybex Aton G2 on a plane?

Yes, Cybex lists it as certified for aircraft; look for the red-lettered label that says so. The FAA asks that a car seat go in a window seat so it doesn't block the aisle, and the crew will look for that label. It weighs 9 lb to carry through the airport.

Aton G2 or Liingo: what's different?

By the makers' specs, the Aton G2 has a load leg; the Aton G2 lists for $0.04 less. See every spec side by side.

Is it OK to buy a used Aton G2?

NHTSA publishes guidance on used car seats on its car seat page. Cybex lists a lifespan of 6 years from manufacture for this model. Check the label and the maker's instructions, and ask your pediatrician about your child.

Still wondering? Write to us at hello@cribpicks.com and we'll look it up.

More infant car seats

Where these specs come from

Last checked 2026-11-06. Spot something wrong? Tell us. Read our editorial and safety policy and corrections.