BMW 8 Series (G14) (2020) is 570 mm (22.44 inch) longer, 106 mm (4.17 inch) wider and has 100 liters (3.53 ft3) bigger cargo space than FIAT 500X (2020).
FIAT 500X (2020) is 256 mm (10.08 inch) higher and 532 kg (1,173 lbs) lighter than BMW 8 Series (G14) (2020).