BMW 8 Series (G15) (2019) is 22 mm (0.87 inch) wider and 204 kg (450 lbs) lighter than Cadillac CT6-V (2020).
Cadillac CT6-V (2020) is 384 mm (15.12 inch) longer, 132 mm (5.20 inch) higher and has 27 liters (0.95 ft3) bigger cargo space than BMW 8 Series (G15) (2019).