Cybex Solution S2 i-Fix

Our score 9.84 / 10

Research by Peter Crona Last updated Award Best mid-range pick among car seatsMethod How we research

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From 100 cm, up to 150 cm (~3 to 12 years).

Cybex Solution S2 i-Fix

Pros

  • The 100-150 cm range aligns with the later booster phase parents are usually trying to compare.
  • ISOFIX helps keep the empty booster positioned in the car between rides.

Cons

  • It starts too late for younger toddlers.
  • The key check is still real shoulder-belt routing and headrest height in the car.
Seat Use
Booster
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Cybex Solution S2 i-Fix is worth shortlisting only after your child is in the 100-150 cm booster window. Its job is not to replace a harnessed toddler seat; it is to make belt-positioning more stable and comfortable for an older child who is ready for a high-back booster. The useful detail is the combination of seat-belt use with optional ISOFIX anchoring, so the empty seat stays positioned and the belt path stays easy to check.

The tradeoff is that every fit check happens in the real car. Confirm shoulder-belt routing, headrest height, and whether the vehicle seat shape lets the booster sit flush. If you still need a built-in harness or rear-facing use, choose an earlier-stage seat.