BMW 5 Series Gran Turismo (2018) is 33 mm (1.30 inch) wider, 15 mm (0.59 inch) higher, 60 kg (132 lbs) lighter and has 142 liters (5.01 ft3) bigger cargo space than Cadillac STS (2018).
Cadillac STS (2018) is 23 mm (0.91 inch) longer than BMW 5 Series Gran Turismo (2018).