BMW 3 Series Gran Turismo (2018) is 7 mm (0.28 inch) higher, 82 kg (181 lbs) lighter and has 10 liters (0.35 ft3) bigger cargo space than Cadillac XTS (2017).
Cadillac XTS (2017) is 307 mm (12.09 inch) longer and 25 mm (0.98 inch) wider than BMW 3 Series Gran Turismo (2018).