Radian 3QXT › fit in › Hyundai Santa Fe
Will the Diono Radian 3QXT fit in a 2019–2023 Hyundai Santa Fe?
Yes — the Diono Radian 3QXT fits a 2019–2023 Hyundai Santa Fe.
The Radian 3QXT is about 17" wide; the Santa Fe's usable rear bench is about 52". It fits one rear position comfortably. Three even fit across the back (51" needed vs 52").
The Radian 3QXT is about 17" wide; the Santa Fe's usable rear bench is about 52". It fits one rear position comfortably. Three even fit across the back (51" needed vs 52").
17"Radian 3QXT width
52"Santa Fe rear bench
Yesthree across
★★★☆☆NHTSA Ease-of-Use
🔗 Amazon link is an affiliate link. As an Amazon Associate we earn from qualifying purchases — at no extra cost to you.
What fits this Santa Fe
- One seat, rear position: Yes. The Radian 3QXT installs in an outboard rear position of a 2019–2023 Hyundai Santa Fe with room to spare.
- Three across: Yes — three need ~51" against a ~52" bench. Test-fit; three-across is decided by half-inches.
- Modes this seat covers: rear-facing → forward-facing → booster.
- LATCH: lower anchors up to 40 lb; the Santa Fe 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 Radian 3QXT's width (Diono published spec (17 in)) and the Santa Fe's rear-bench width (Typical for midsize suv (2-row) — approximate, verify install in your vehicle) are both approximate — confirm with a test-fit before buying.
Common questions
Will the Diono Radian 3QXT fit in a 2019–2023 Hyundai Santa Fe?
Yes — the Diono Radian 3QXT (17" wide) fits a single rear seating position in a 2019–2023 Hyundai Santa Fe. Three of them also fit across its roughly 52" rear bench.
Can you fit three Radian 3QXTs across a Santa Fe?
Yes — three Radian 3QXTs need about 51" and the Santa Fe's usable bench is about 52". It's close, so test-fit before buying.
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.