BMW 8 Series (G14) (2018) is 55 mm (2.17 inch) longer and 20 mm (0.79 inch) wider than Cadillac CTS Coupe (2014).
Cadillac CTS Coupe (2014) is 83 mm (3.27 inch) higher, 212 kg (467 lbs) lighter and has 97 liters (3.43 ft3) bigger cargo space than BMW 8 Series (G14) (2018).