Saw my inlaws new x1 hybrid. Does look quite small, and I'm surprised how big the boot is. He's disapointed in the range though as he's used to a 116d. We had a discussion as to what platform it uses as he was convinced it was on a 5 series (Google tells me it's on the 3). He reckons you could fit 3 car seats across the back seat but I'm highly suspicious that they would fit.