KidShortlist
UPPAbaby · High-back booster

UPPAbaby Alta V2

Based on 2 independent scored tests: BabyGearLab (2025), NHTSA (National Highway Traffic Safety Administration) Car Seat Ease of Use Ratings (2025). The test scores average 69. With only 2 tests, the ranking score is pulled down a little until more testers confirm it.

Tested for US & Canada
66
Shortlist score
Good
#158 of car seats for US & Canada
Medium confidence

Where to buy

This seat is certified for US & Canada. Car seats may only be used in the market they're approved for, so we don't link to shops in Czechia.

Test results

Each score as the tester published it, converted to our 0–100 scale. Weight is how much the result counts towards the score.

BabyGearLab US · Editorial review
BabyGearLab best booster seat review, 2025
75%
Our scale75
weight 0.60
Crash test
7.3
Ease of use
9.3
Weight size
6.9
Comfort
6.7
Quality
6.1
Listed at $200 metric weights: Crash Test (35%); Ease of Use (25%); Weight/Size (15%); Comfort (15%); Quality (10%); overall listed on https://www.babygearlab.com/topics/vehicle-safety/best-booster-seat/ratings; review last modified 2025-02-27
View on babygearlab.com ↗
NHTSA (National Highway Traffic Safety Administration) Car Seat Ease of Use Ratings US · Government / institute
NHTSA Car Seat Ease of Use Ratings, 2025 · booster mode
3/5★
3 stars
Our scale60
weight 0.35
Labels
2
Instructions
4
Securing child
2
Vehicle installation features
5
NHTSA Ease of Use rating for Booster mode (Highback); seat type Booster; model #1320-ALT-US-JKE; evaluated seat manufactured 2025-04-01; test_year = year of manufacture of the evaluated seat (NHTSA does not publish a rating date in the data)
View on api.nhtsa.gov ↗
Wirecutter (The New York Times) US · Editorial review
Wirecutter: The Best Booster Car Seats (updated Jun 26, 2026)
Other high-back booster seats worth considering
Pick or pass/fail. Shown, not scored.
read on archived copy (web.archive.org, 20260827) of https://www.nytimes.com/wirecutter/reviews/best-booster-car-seats/ (live site blocks automated fetch)
View on web.archive.org ↗

Also recommended: Wirecutter (The New York Times): Other high-back booster seats worth considering.

Top-ranked alternatives

How we turn these into one number: methodology. Tested 2025–2026.

KidShortlist

We don't test products ourselves. Every score here comes from an independent tester and links back to it. We combine 4,061 results from 26 sources.

Read before buying

Several testers are paywalled, so we only include what they publish openly. Models change and get recalled. Check the tester's own page and the retailer listing before you buy.

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