Marathon ClickTight › fit in › Audi A4 Allroad

Will the Britax Marathon ClickTight fit in a 2017–2024 Audi A4 Allroad?

Yes — the Britax Marathon ClickTight fits a 2017–2024 Audi A4 Allroad.
The Marathon ClickTight is about 18.5" wide; the A4 Allroad's usable rear bench is about 50". It fits one rear position comfortably. Three across is tight (55.5" needed vs 50").

18.5"Marathon ClickTight width

50"A4 Allroad rear bench

Tightthree across

★★★★☆NHTSA Ease-of-Use

Check the Marathon ClickTight on Amazon → All seats for a A4 Allroad

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What fits this A4 Allroad

One seat, rear position: Yes. The Marathon ClickTight installs in an outboard rear position of a 2017–2024 Audi A4 Allroad with room to spare.
Three across: Tight — three need ~55.5" against only ~50". A narrower seat is the better bet.
Modes this seat covers: rear-facing → forward-facing.
LATCH: lower anchors up to 40 lb; the A4 Allroad has 2 lower-anchor positions.

ℹ️ Informational only — built from NHTSA public car-seat ratings and published seat/vehicle dimensions. This is not a safety certification and not a substitute for the seat and vehicle manuals. Always confirm the fit and install yourself before every trip. The Marathon ClickTight's width (Britax published spec (~18.5 in)) and the A4 Allroad's rear-bench width (Typical for wagon — approximate, verify install in your vehicle) are both approximate — confirm with a test-fit before buying.

Common questions

Will the Britax Marathon ClickTight fit in a 2017–2024 Audi A4 Allroad?

Yes — the Britax Marathon ClickTight (18.5" wide) fits a single rear seating position in a 2017–2024 Audi A4 Allroad. Three across is tight — its rear bench is about 50" and three of these would need 55.5".

Can you fit three Marathon ClickTights across a A4 Allroad?

Probably not — three Marathon ClickTights need about 55.5" but the A4 Allroad's usable bench is only about 50". Consider a narrower seat — see our narrowest-seats guide.

Sources: seat ratings & modes — NHTSA (pulled 2026-06-18); dimensions — manufacturer specs and owner measurements. Informational only — built from NHTSA public car-seat ratings and published seat/vehicle dimensions. This is not a safety certification and not a substitute for the seat and vehicle manuals. Always confirm the fit and install yourself before every trip.