BMW 8 Series (G15) (2019) is 55 mm (2.17 inch) longer and 20 mm (0.79 inch) wider than Cadillac CTS (2019).
Cadillac CTS (2019) is 112 mm (4.41 inch) higher, 113 kg (249 lbs) lighter and has 27 liters (0.95 ft3) bigger cargo space than BMW 8 Series (G15) (2019).