BMW 6 Series Gran Turismo (2018) is 167 mm (6.57 inch) longer, 20 mm (0.79 inch) wider, 86 mm (3.39 inch) higher and has 272 liters (9.61 ft3) bigger cargo space than Cadillac CT5 (2021).
Cadillac CT5 (2021) is 135 kg (298 lbs) lighter than BMW 6 Series Gran Turismo (2018).