Chicco
Chicco KeyFit 35 Infant Car Seat
$249.99Cheaper
Released 2020
Best Car Seats · head-to-head
Chicco KeyFit 35 Infant Car Seat vs Nuna PIPA rx Infant Car Seat
A sourced, side-by-side comparison. Chicco KeyFit 35 Infant Car Seat is cheaper at $249.99. Every spec and price links to its source.
Nuna
Nuna PIPA rx Infant Car Seat
$550
Which is better: the Chicco KeyFit 35 Infant Car Seat or Nuna PIPA rx Infant Car Seat?
The Nuna PIPA rx Infant Car Seat wins 1 of the 1 specs we compare head to head; the other wins 0. The Chicco KeyFit 35 Infant Car Seat is the cheaper at $249.99. Get the Nuna PIPA rx Infant Car Seat for the stronger spec sheet, the Chicco KeyFit 35 Infant Car Seat to spend less.
As an Amazon Associate we earn from qualifying purchases. Prices verified at capture; live price may differ.
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 | Nuna PIPA rx Infant Car Seat |
|---|---|---|
| US price | $249.99 | $550 |
| Brand | Chicco | Nuna |
| Released | 2020 | — |
| Type | infant | infant |
| Min weight (lb) | 4 | 4 |
| Max weight (lb) | 35 | 30 |
| Height limit (in) | 32 in | 30 in |
| Install | both | both |
| Steel frame | Yes | Yes |
| Expiration years | 6 | 7 |
| Release | 2020 | — |
Sources — Chicco KeyFit 35 Infant Car Seat: chiccousa.com (verified 2026-06-19). Nuna PIPA rx Infant Car Seat: nunababy.com (verified 2026-06-19).
What's the difference between the Chicco KeyFit 35 Infant Car Seat and Nuna PIPA rx Infant Car Seat?
Where the two actually differ on the specs we track (3 of 7). Matching specs are omitted.
- Max weight (lb): Chicco KeyFit 35 Infant Car Seat 35 vs Nuna PIPA rx Infant Car Seat 30
- Height limit (in): Chicco KeyFit 35 Infant Car Seat 32 in vs Nuna PIPA rx Infant Car Seat 30 in
- Expiration years: Chicco KeyFit 35 Infant Car Seat 6 vs Nuna PIPA rx Infant Car Seat 7
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.
Nuna PIPA rx Infant Car Seat
Only one whitelisted tester (Wirecutter/NYT) covers the exact Pipa rx, and only within its competition roundup rather than as a standalone hands-on pick. It praises the well-designed Relx base that ships with the rx and calls the Nuna line lightweight, stylish, and easy to use, but concludes that at close to $400 the Uppababy Aria (its upgrade pick) is a far better choice. No crash-test or other measurements are reported for the rx. (1 sourced review.)
Praised: The Relx base that ships with the rx is better designed and holds the seat securely in place; Lightweight, stylish, and easy to use.
Flagged: Expensive (near $400); Wirecutter says the Uppababy Aria is a far better choice at that price; Only the Relx-base rx models are worth considering; the cheaper Pipa-series base has a design flaw.