BMW 6 Series Gran Turismo (2020) is 40 mm (1.57 inch) longer, 332 kg (732 lbs) lighter and has 253 liters (8.93 ft3) bigger cargo space than Cadillac XT6 (2020).
Cadillac XT6 (2020) is 62 mm (2.44 inch) wider and 211 mm (8.31 inch) higher than BMW 6 Series Gran Turismo (2020).