Originally Posted by SamS
X1 - smaller, older design/chassis, missing features like HUD, NBT Navigation, etc.
F31 - less rear legroom, less rear cargo volume. Some people may prefer higher seating position of 3 GT.
X3 - drives like a SUV, not a car. Enough said
Stop picking on the F25 X3, It has its own platform other than the F30.