Poplar › fit in › Jeep Grand Cherokee L

Will the Britax Poplar fit in a 2021–2024 Jeep Grand Cherokee L?

Yes — the Britax Poplar fits a 2021–2024 Jeep Grand Cherokee L.
The Poplar is about 18.5" wide; the Grand Cherokee L's usable rear bench is about 53". It fits one rear position comfortably. Three across is tight (55.5" needed vs 53").

18.5"Poplar width

53"Grand Cherokee L rear bench

Tightthree across

★★★★☆NHTSA Ease-of-Use

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What fits this Grand Cherokee L

One seat, rear position: Yes. The Poplar installs in an outboard rear position of a 2021–2024 Jeep Grand Cherokee L with room to spare.
Three across: Tight — three need ~55.5" against only ~53". A narrower seat is the better bet.
Modes this seat covers: rear-facing → forward-facing.
LATCH: lower anchors up to 40 lb; the Grand Cherokee L 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 Poplar's width (Britax published spec) and the Grand Cherokee L's rear-bench width (Typical for 3-row suv — approximate, verify install in your vehicle) are both approximate — confirm with a test-fit before buying.

Common questions

Will the Britax Poplar fit in a 2021–2024 Jeep Grand Cherokee L?

Yes — the Britax Poplar (18.5" wide) fits a single rear seating position in a 2021–2024 Jeep Grand Cherokee L. Three across is tight — its rear bench is about 53" and three of these would need 55.5".

Can you fit three Poplars across a Grand Cherokee L?

Probably not — three Poplars need about 55.5" but the Grand Cherokee L's usable bench is only about 53". 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.