BMW 3 Series Gran Turismo (2020) is 560 mm (22.05 inch) longer, 32 mm (1.26 inch) wider and has 270 liters (9.53 ft3) bigger cargo space than FIAT 500X (2020).
FIAT 500X (2020) is 87 mm (3.43 inch) higher and 334 kg (736 lbs) lighter than BMW 3 Series Gran Turismo (2020).