The tiny 660cc engine is positioned under the rear floor, so, with no engine bay up front, the front-seat passengers sit further forward, freeing up more room in the oval-shaped cabin.
It's spacious for four passengers and there's plenty of head- and legroom. We haven't yet measured the interior, but it feels bigger than rivals' cabins.
However, one drawback of the rear-engine layout is the high boot floor; it's not as deep as other superminis' boots. There is still enough space to stow a few bags of shopping, though, and the rear seats fold individually to increase boot space.