BMW 3 Series Gran Turismo (2021) is 38 mm (1.50 inch) longer, 56 mm (2.20 inch) higher, 131 kg (289 lbs) lighter and has 74 liters (2.61 ft3) bigger cargo space than Cadillac CTS (2018).
Cadillac CTS (2018) is 53 mm (2.09 inch) wider than BMW 3 Series Gran Turismo (2021).