BMW 8 Series (G15) (2018) is 20 mm (0.79 inch) wider, 6 kg (13 lbs) lighter and has 123 liters (4.34 ft3) bigger cargo space than Cadillac CTS-V Coupe (2014).
Cadillac CTS-V Coupe (2014) is 34 mm (1.34 inch) longer and 81 mm (3.19 inch) higher than BMW 8 Series (G15) (2018).