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Two car seats in a 2024 Kia Soul

The Soul is boxy and feels roomy, but its rear bench is on the narrow side (~48") and rear legroom is short. Two seats almost always fit in the two outboard positions; the squeeze is when both are wide and you still want the middle usable, or you’re eyeing three-across.

The computed shortlist for a 2020–2024 Kia Soul

1

Cybex Sirona S

★★★★★ NHTSA Ease-of-Use rotating 1–2 across Slim (≤17.5") rear-facing legroom tight

A 360° rotating convertible that is unusually narrow for a swivel seat — the rare rotating pick that can still work in tighter back seats.

width 17" · covers rear-facing → forward-facing · $$$

Check price on Amazon → Full fit details Will it fit a Soul?

2

Nuna Revv

★★★★★ NHTSA Ease-of-Use rotating 1–2 across Standard (≤19.5") rear-facing legroom tight

Nuna’s rotating convertible — spins to the door for easy loading, with the premium fabrics and simple install the line is known for.

width 19" · covers rear-facing → forward-facing · $$$

Check price on Amazon → Full fit details Will it fit a Soul?

3

Graco 4Ever DLX

★★★★★ NHTSA Ease-of-Use 1–2 across Wide (>19.5") rear-facing legroom tight

The best-selling 4-in-1 — one seat from newborn rear-facing through a backless booster.

width 20" · covers rear-facing → forward-facing → booster · $$$

Check price on Amazon → Full fit details Will it fit a Soul?

4

Graco SlimFit

★★★★☆ NHTSA Ease-of-Use 1–2 across Standard (≤19.5") rear-facing legroom tight

Cup holders rotate away to shrink the footprint — a 3-in-1 that genuinely saves width.

width 18.5" · covers rear-facing → forward-facing → booster · $$

Check price on Amazon → Full fit details Will it fit a Soul?

5

Britax Poplar

★★★★☆ NHTSA Ease-of-Use 1–2 across Standard (≤19.5") rear-facing legroom tight

Britax’s newer convertible with a slimmer profile and ClickTight install.

width 18.5" · covers rear-facing → forward-facing · $$$

Check price on Amazon → Full fit details Will it fit a Soul?

6

Britax Marathon ClickTight

★★★★☆ NHTSA Ease-of-Use 1–2 across Standard (≤19.5") rear-facing legroom tight

ClickTight makes a tight belt install foolproof — the entry point to Britax’s convertible line.

width 18.5" · covers rear-facing → forward-facing · $$$

Check price on Amazon → Full fit details Will it fit a Soul?

How we worked this out

• The bench. A 2020–2024 Kia Soul's usable second-row width is about 48" (Kia dimensions + owner measurements (approx); boxy but short rear legroom) — approximate, from manufacturer dimensions and owner measurements.
• The seats. We take each seat's external width at its widest point (manufacturer spec) and place two in the outboard positions.
• The ranking. Ranked by NHTSA Ease-of-Use (5★ scale), then fewer recalls, then narrower — never by commission.
• The honesty rule. Where a seat's width isn't published, we flag the fit as not confirmed rather than guess. Three-across is decided by half-inches, so test-fit your exact seats in your exact car.

Common questions

Will two car seats fit across the back of a 2024 Kia Soul?

Two car seats fit the two outboard positions of a 2020–2024 Kia Soul in nearly every case. Because rear legroom is short here, a deep rear-facing seat may require sliding the front seat forward. The shortlist below ranks the seats by NHTSA Ease-of-Use. Test-fit before buying — half an inch decides a tight back seat.

What is the best car seat for a 2020–2024 Kia Soul?

Among the seats we track, the Cybex Sirona S ranks first for a 2020–2024 Kia Soul (NHTSA Ease-of-Use 5/5). The right pick still depends on your child's age, height, and weight — use the picker to narrow it.

Sources: seat ratings, modes & recalls — NHTSA (pulled 2026-06-17); seat widths & the Soul's rear-bench width — manufacturer specs and owner measurements (approximate). 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.