Cadillac CTS Coupe (2014) is 242 mm (9.53 inch) longer, 133 mm (5.24 inch) higher and has 97 liters (3.43 ft3) bigger cargo space than Mercedes AMG GT (2018).
Mercedes AMG GT (2018) is 57 mm (2.24 inch) wider and 66 kg (146 lbs) lighter than Cadillac CTS Coupe (2014).