I can't comment on parking it yet, but it feels the same size to drive - it doesn't feel like getting into a bus. The boot is vast and even with the driver's seat set for a 5'11" pie-eating, cider loving hunk like me, there are taxi levels of legroom in the back. Mr Mincey did comment that I seemed further away from her when I took her for a spin, which can only be a good thing really. The IS is 1.81m wide whereas the ES is 1.86m wide, so there's not a lot in it really. Lengthwise the ES is 4.97m and the IS is 4.68m.