BMW 8 Series (G16) (2020) is 52 mm (2.05 inch) wider than Cadillac CT6 (2019).
Cadillac CT6 (2019) is 145 mm (5.71 inch) longer, 66 mm (2.60 inch) higher, 101 kg (223 lbs) lighter and has 7 liters (0.25 ft3) bigger cargo space than BMW 8 Series (G16) (2020).