UPPAbaby Alta V2
Safety notice: No US recall names the Alta V2 (searched 19 Oct 2026). Check your seat's model number and date of manufacture at nhtsa.gov/recalls.
Pros
- Rigid LATCH with a front-mounted release lever
- SecureFit clip keeps the lap belt low across the hips
- Bottom of the seat is 15.5 in wide, so it fits tight back rows
Cons
- About 17 lb, so it is not a seat you swap casually
- The side wings widen as the headrest rises, so broad-shouldered kids may feel pinched before the 57 in limit
Our Verdict: UPPAbaby Alta V2
The UPPAbaby Alta V2 scored 80 out of 100 across the three criteria we score every booster seat on, and took Best High-Back Booster Overall in our booster seat guide.
It earns the 80 by being good at everything that matters in a booster. Crash testing scored 8.0, the build is the polished kind, and the SecureFit clip keeps the lap belt low across the hips instead of riding up toward the stomach.
Its limit is shoulder room: the wings widen as the headrest rises, so a tall, broad-shouldered child can feel a pinch before reaching the 57 in height limit. It also weighs about 17 lb.
Our Analysis, Comparisons and Test Results
Crash test
8 out of ten. Well above baseline, which our crash testing credits to the internal EPP foam in the seat.
Weight & size
7.5 out of ten. About 17 lb, but the narrow 15.5 in base is worth a lot where row space is tight.
Quality
8.5 out of ten. A polished finish, with removable machine-washable covers and a pocket in the seat for the manual.
Should You Buy the UPPAbaby Alta V2?
Choose it for a tight back row. At 15.5 in across the bottom, Maya and Rohan fit it three across in a mid-sized SUV in Seattle.
Skip it for a very broad child, and expect to leave it in one car. The Diono Cambria 2 XL gives more room, and the Cybex Solution G2 is the lighter carry.
No booster seat in this guide wins on all three criteria. The ones that score well do it by being honest about what they gave up, so read the low column before the high one.
What Other Car Seats Should You Consider?
We scored the UPPAbaby Alta V2 against ten other booster seats on the same criteria. The three closest on score:
| Compare | Score | Award | Tested in |
|---|---|---|---|
| UPPAbaby Alta V2 (this review) | 80 | Best High-Back Booster Overall | Best Booster Seat 2026: 11 Seats Compared |
| Clek Oobr | 78 | Best Build Quality | Best Booster Seat 2026: 11 Seats Compared |
| Cybex Solution G2 | 78 | Best Reclining Headrest | Best Booster Seat 2026: 11 Seats Compared |
| Britax Grow With You ClickTight | 73 | Best Harness-to-Booster Seat | Best Booster Seat 2026: 11 Seats Compared |
| Maxi-Cosi RodiSport | 73 | Best Straightforward Booster | Best Booster Seat 2026: 11 Seats Compared |
| Peg Perego Viaggio Flex 120 | 72 | Best Folding Booster | Best Booster Seat 2026: 11 Seats Compared |
Specifications
| Type | High-back booster |
|---|---|
| Weight | About 17 lb (published figure) |
| Child limits | 40–100 lb, 38–57 in |
| Install | Rigid LATCH |
Conclusion: UPPAbaby Alta V2
The Alta V2 took the top booster award with 80. Weight and size at 7.5 is its lowest mark, and the narrow base is what keeps that score respectable.
See how it ranks against the rest in Best Booster Seat 2026: 11 Seats Compared.
Tested against 10 other car seats in Best Booster Seat 2026: 11 Seats Compared. See all car seats guides and reviews.