BMW 3 Series Gran Turismo (2014) is 464 mm (18.27 inch) longer, 4 mm (0.16 inch) wider and has 50 liters (1.77 ft3) bigger cargo space than BMW X2 (2017).
BMW X2 (2017) is 18 mm (0.71 inch) higher and 257 kg (567 lbs) lighter than BMW 3 Series Gran Turismo (2014).