BMW 8 Series (G16) (2019) is 439 mm (17.28 inch) longer, 126 mm (4.96 inch) wider and has 59 liters (2.08 ft3) bigger cargo space than Cadillac ATS (2014).
Cadillac ATS (2014) is 13 mm (0.51 inch) higher and 390 kg (860 lbs) lighter than BMW 8 Series (G16) (2019).