BMW 5 Series Gran Turismo (2015) is 40 mm (1.57 inch) longer, 66 mm (2.60 inch) wider, 106 mm (4.17 inch) higher and has 112 liters (3.96 ft3) bigger cargo space than Cadillac STS (2017).
Cadillac STS (2017) is 371 kg (818 lbs) lighter than BMW 5 Series Gran Turismo (2015).