BMW 8 Series (G15) (2019) is 200 mm (7.87 inch) longer, 96 mm (3.78 inch) wider and has 39 liters (1.38 ft3) bigger cargo space than Cadillac ATS (2014).
Cadillac ATS (2014) is 79 mm (3.11 inch) higher and 320 kg (705 lbs) lighter than BMW 8 Series (G15) (2019).