BMW 8 Series (G14) (2020) is 46 mm (1.81 inch) longer and 20 mm (0.79 inch) wider than Cadillac CTS (2019).
Cadillac CTS (2019) is 114 mm (4.49 inch) higher, 222 kg (489 lbs) lighter and has 97 liters (3.43 ft3) bigger cargo space than BMW 8 Series (G14) (2020).