BMW 5 Series Gran Turismo (2015) is 363 mm (14.29 inch) longer, 94 mm (3.70 inch) wider, 139 mm (5.47 inch) higher and has 119 liters (4.20 ft3) bigger cargo space than Cadillac ATS (2017).
Cadillac ATS (2017) is 525 kg (1,157 lbs) lighter than BMW 5 Series Gran Turismo (2015).