Poplar › fit in › Toyota Grand Highlander

Will the Britax Poplar fit in a 2024–2024 Toyota Grand Highlander?

Yes — the Britax Poplar fits a 2024–2024 Toyota Grand Highlander.
The Poplar is about 18.5" wide; the Grand Highlander's usable rear bench is about 54". It fits one rear position comfortably. Three across is tight (55.5" needed vs 54").

18.5"Poplar width

54"Grand Highlander rear bench

Tightthree across

★★★★☆NHTSA Ease-of-Use

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What fits this Grand Highlander

One seat, rear position: Yes. The Poplar installs in an outboard rear position of a 2024–2024 Toyota Grand Highlander with room to spare.
Three across: Tight — three need ~55.5" against only ~54". A narrower seat is the better bet.
Modes this seat covers: rear-facing → forward-facing.
LATCH: lower anchors up to 40 lb; the Grand Highlander has 3 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 Highlander'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 2024–2024 Toyota Grand Highlander?

Yes — the Britax Poplar (18.5" wide) fits a single rear seating position in a 2024–2024 Toyota Grand Highlander. Three across is tight — its rear bench is about 54" and three of these would need 55.5".

Can you fit three Poplars across a Grand Highlander?

Probably not — three Poplars need about 55.5" but the Grand Highlander's usable bench is only about 54". 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.