Best Car Seats · head-to-head

Chicco KeyFit 35 Infant 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.

Which is better: the Chicco KeyFit 35 Infant Car Seat or Maxi-Cosi Pria Max All-in-One Convertible Car Seat?

The Chicco KeyFit 35 Infant 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 Chicco KeyFit 35 Infant Car Seat for the stronger spec sheet, the Maxi-Cosi Pria Max All-in-One Convertible Car Seat to spend less.

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Full spec sheet

marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.

Spec Chicco KeyFit 35 Infant Car Seat Maxi-Cosi Pria Max All-in-One Convertible Car Seat
US price $249.99 $247.49
BrandChiccoMaxi-Cosi
Released20202021
Type infant all_in_one
Min weight (lb) 4 5
Max weight (lb) 35 100
Height limit (in) 32 in 52 in (booster); 49 in (FF harness)
Install both both
Steel frame Yes No
Expiration years 6 10
Release 2020 2021

Sources — Chicco KeyFit 35 Infant Car Seat: chiccousa.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 Chicco KeyFit 35 Infant Car Seat and Maxi-Cosi Pria Max All-in-One Convertible Car Seat?

Where the two actually differ on the specs we track (6 of 7). Matching specs are omitted.

  • Type: Chicco KeyFit 35 Infant Car Seat infant vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat all_in_one
  • Min weight (lb): Chicco KeyFit 35 Infant Car Seat 4 vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat 5
  • Max weight (lb): Chicco KeyFit 35 Infant Car Seat 35 vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat 100
  • Height limit (in): Chicco KeyFit 35 Infant Car Seat 32 in vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat 52 in (booster); 49 in (FF harness)
  • Steel frame: Chicco KeyFit 35 Infant Car Seat true vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat false
  • Expiration years: Chicco KeyFit 35 Infant Car Seat 6 vs Maxi-Cosi Pria Max All-in-One Convertible Car Seat 10

What reviewers say

Sourced tester consensus for each — the "what people who used it think" layer, not just specs.

Chicco KeyFit 35 Infant Car Seat

One whitelisted hands-on tester (Reviewed/USA Today) reviewed this exact model, recommending the KeyFit 35 as an easy-to-install, comfortable, washable, budget-friendly infant seat while flagging it as bulky/awkward to carry and unattractive. No lab-measured data exists: Reviewed explicitly states it does not crash-test and relies on NHTSA safety ratings. (1 sourced review, 1 lab-tested.)

Praised: Easiest install of any seat tested; strap-based system clips into LATCH in under 5 minutes with a built-in level; Premium cushioning far superior to other seats tested; cozy headrest and soft fabric kept the baby comfortable; Easy to clean thanks to velcro-detachable machine-washable padding and mess-repelling fabric.

Flagged: Bulky and awkward to carry despite only modest weight; Unattractive orange/gray/black color scheme.

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