BMW 8 Series (G14) (2018) is 20 mm (0.79 inch) wider, 7 kg (15 lbs) lighter and has 53 liters (1.87 ft3) bigger cargo space than Cadillac CTS-V Coupe (2015).
Cadillac CTS-V Coupe (2015) is 34 mm (1.34 inch) longer and 83 mm (3.27 inch) higher than BMW 8 Series (G14) (2018).