KidShortlist
Diono · High-back booster

Diono Monterey 2XT LATCH

Based on 1 independent scored test: NHTSA (National Highway Traffic Safety Administration) Car Seat Ease of Use Ratings (2024). The test scores average 80. With only 1 test, the ranking score is pulled down a little until more testers confirm it.

Tested for US & Canada
68
Shortlist score
Good
#119 of car seats for US & Canada
Single test

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.

NHTSA (National Highway Traffic Safety Administration) Car Seat Ease of Use Ratings US · Government / institute
NHTSA Car Seat Ease of Use Ratings, 2024 · booster mode
4/5★
4 stars
Our scale80
weight 0.35
Labels
4
Instructions
4
Securing child
2
Vehicle installation features
5
NHTSA Ease of Use rating for Booster mode (Highback/No Back); seat type Booster; model #15614-na-01; evaluated seat manufactured 2024-06-27; 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)
Best for bigger kids
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): Best for bigger kids.

Top-ranked alternatives

How we turn these into one number: methodology. Tested 2024–2026.

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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