Both are infant car seats — here are their published manufacturer specs side by side.
This compares published manufacturer specs — not safety or fit advice. The seat's manual, your vehicle's manual, NHTSA's tools and a certified CPST are the fit-and-safety authority; always check them before installing.
Spec
Cybex Aton G
Cybex Aton 2
Stage
Infant
Infant
Narrow (3-across)
–
✓
Extended rear-facing
–
–
FAA-approved
✓
✓
Lightweight / travel
✓
✓
How they differ
the Cybex Aton 2 is listed narrow (roughly ≤17″) for fitting three across a back seat; the Cybex Aton G isn't listed narrow
Published limits
Mode
Cybex Aton G
Cybex Aton 2
Rear-facing
4–35 lb · 17–32 in
4–35 lb
Useful life
—
—
Cybex Aton G: Rear-facing-only infant carrier: for children 4–35 lb and 17–32″. Useful life is set by the printed "Expires On" date on the seat and base (no printed number of years in the manual).
Cybex Aton 2: Rear-facing-only infant carrier: for children 4–35 lb and 30″ or less (no minimum height printed, unlike the newer Aton G). Useful life is set by the printed "Expires On" date (no printed number of years in the manual).
That is the record of the brand — not a verdict on this model. A recall names specific models and manufacture-date ranges, and a seat missing from the record is not "recall-free": check nhtsa.gov/recalls with the model and date of manufacture on your seat's label. Source: NHTSA, retrieved 2026-09-05.
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FAQ
What's the difference between the Cybex Aton G and the Cybex Aton 2? The Cybex Aton G is FAA-approved for aircraft, lightweight/travel; the Cybex Aton 2 is narrow for 3-across, FAA-approved for aircraft, lightweight/travel. Both are infant car seats.
Which fits three across, the Cybex Aton G or the Cybex Aton 2? The Cybex Aton 2 is listed narrow (~≤17″) for 3-across; the Cybex Aton G isn't. Three-across fit still depends on your exact vehicle — confirm before buying.
Which is right for my car and child, the Cybex Aton G or the Cybex Aton 2? That depends on your specific vehicle and child — this page compares published manufacturer specs only, not fit or safety. Check the seat manual, your vehicle manual, NHTSA's car-seat finder and ideally a certified CPST before deciding.
Citing these specs? Go ahead — published manufacturer data, last verified 2026-06-11. Copy a ready-made reference: