KidShortlist
Graco · Convertible (0–4 y)

Graco SlimFit3 LX 3-in-1

Based on 1 independent scored test: BabyGearLab (2025). The test scores average 70. With only 1 test, the ranking score is pulled down a little until more testers confirm it.

Tested for US & Canada
65
Shortlist score
Good
#167 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.

BabyGearLab US · Editorial review
BabyGearLab best convertible car seat review, 2025
70%
Best Narrow Convertible Seat
Our scale70
weight 0.60
Crash test
8.4
Ease of installation latch
6.5
Ease of installation belt
4.8
Ease of use
6.0
Comfort quality
6.9
Weight size
8.3
Listed at $300 metric weights: Crash Test (35%); Ease of Installation - LATCH (20%); Ease of Installation - Belt (15%); Ease of Use (15%); Comfort/Quality (10%); Weight/ Size (5%); overall listed on https://www.babygearlab.com/topics/vehicle-safety/best-convertible-car-seat/ratings; review last modified 2025-09-11
View on babygearlab.com ↗
Babylist US · Editorial review
Babylist: The Best All-in-One Car Seats, 2026
Best for Small Cars
Pick or pass/fail. Shown, not scored.
product name as listed: Graco SlimFit3 LX 3-in-1 Car Seat; guide updated 2026-03-13
View on babylist.com ↗
Babylist US · Editorial review
Babylist: Babylist's Best Convertible Car Seats, 2026
Best Slim Fit
Pick or pass/fail. Shown, not scored.
product name as listed: Graco SlimFit LX 3-in-1 Car Seat; guide updated 2026-09-28
View on babylist.com ↗

Also recommended: Babylist: Best for Small Cars, Babylist: Best Slim Fit.

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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