BMW 8 Series (G15) (2018) is 244 mm (9.61 inch) longer than Cadillac XT4 (2021).
Cadillac XT4 (2021) is 46 mm (1.81 inch) wider, 264 mm (10.39 inch) higher, 264 kg (582 lbs) lighter and has 217 liters (7.66 ft3) bigger cargo space than BMW 8 Series (G15) (2018).