BMW 8 Series (G16) (2019) is 818 mm (32.20 inch) longer, 136 mm (5.35 inch) wider and has 190 liters (6.71 ft3) bigger cargo space than FIAT 500X (2020).
FIAT 500X (2020) is 188 mm (7.40 inch) higher and 493 kg (1,087 lbs) lighter than BMW 8 Series (G16) (2019).