Britax Marathon ClickTight vs Chicco KeyFit 35 Infant
Head-to-head in best car seats, scored on our six-axis safety-first system.
We independently research and rank products. When you buy through links on our site, we may earn an affiliate commission — at no extra cost to you. This never influences our safety-first rankings.
Our verdict
Britax Marathon ClickTight takes it on our safety-first score (9.3 vs 9.3), helped most by clicktight install. It’s close, though — the two are evenly matched, so let the price and the axis breakdown below decide.
Who wins each category
9.6Safety9.6
9.5Ease of use✓ 9.6
8.8Value✓ 9.0
9.0 ✓Durability8.8
8.8 ✓Comfort8.6
8.2 ✓Features7.8
Britax Marathon ClickTight
$249–$290
Chicco KeyFit 35 Infant
$199–$250
Safety
9.6
9.6
Ease of use
9.5
9.6
Value
8.8
9.0
Durability
9.0
8.8
Comfort
8.8
8.6
Features
8.2
7.8
Want more options? See our full ranking of best car seats.