CYBEX
CYBEX Sirona S with SensorSafe Convertible Car Seat
$349.99
Best Car Seats · head-to-head
CYBEX Sirona S with SensorSafe Convertible Car Seat vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat
A sourced, side-by-side comparison. Maxi-Cosi Pria Max All-in-One Convertible Car Seat is cheaper at $247.49. Every spec and price links to its source.
Maxi-Cosi
Maxi-Cosi Pria Max All-in-One Convertible Car Seat
$247.49Cheaper
Released 2021
Which is better: the CYBEX Sirona S with SensorSafe Convertible Car Seat or Maxi-Cosi Pria Max All-in-One Convertible Car Seat?
The CYBEX Sirona S with SensorSafe Convertible Car Seat wins 2 of the 2 specs we compare head to head; the other wins 0. The Maxi-Cosi Pria Max All-in-One Convertible Car Seat is the cheaper at $247.49. Get the CYBEX Sirona S with SensorSafe Convertible Car Seat for the stronger spec sheet, the Maxi-Cosi Pria Max All-in-One Convertible Car Seat to spend less.
See CYBEX Sirona S with SensorSafe Convertible Car Seat on Amazon See Maxi-Cosi Pria Max All-in-One Convertible Car Seat on Amazon
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | CYBEX Sirona S with SensorSafe Convertible Car Seat | Maxi-Cosi Pria Max All-in-One Convertible Car Seat |
|---|---|---|
| US price | $349.99 | $247.49 |
| Brand | CYBEX | Maxi-Cosi |
| Released | — | 2021 |
| Type | convertible | all_in_one |
| Min weight (lb) | 4 | 5 |
| Max weight (lb) | 65 | 100 |
| Height limit (in) | 49 in | 52 in (booster); 49 in (FF harness) |
| Install | both | both |
| Steel frame | — | No |
| Expiration years | 10 | 10 |
| Release | — | 2021 |
Sources — CYBEX Sirona S with SensorSafe Convertible Car Seat: cybex-online.com (verified 2026-06-19). Maxi-Cosi Pria Max All-in-One Convertible Car Seat: maxicosi.com (verified 2026-06-19).
What's the difference between the CYBEX Sirona S with SensorSafe Convertible Car Seat and Maxi-Cosi Pria Max All-in-One Convertible Car Seat?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Type: CYBEX Sirona S with SensorSafe Convertible Car Seat convertible vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat all_in_one
- Min weight (lb): CYBEX Sirona S with SensorSafe Convertible Car Seat 4 vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat 5
- Max weight (lb): CYBEX Sirona S with SensorSafe Convertible Car Seat 65 vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat 100
- Height limit (in): CYBEX Sirona S with SensorSafe Convertible Car Seat 49 in vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat 52 in (booster); 49 in (FF harness)