BMW 8 Series (G15) (2018) is 244 mm (9.61 inch) longer than Cadillac XT4 (2020).
Cadillac XT4 (2020) is 45 mm (1.77 inch) wider, 286 mm (11.26 inch) higher, 179 kg (395 lbs) lighter and has 217 liters (7.66 ft3) bigger cargo space than BMW 8 Series (G15) (2018).