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 (2018).
Cadillac ATS (2018) is 13 mm (0.51 inch) higher and 289 kg (637 lbs) lighter than BMW 8 Series (G16) (2019).