Cadillac CT6-V (2020) is 681 mm (26.81 inch) longer, 184 mm (7.24 inch) higher and has 97 liters (3.43 ft3) bigger cargo space than Mercedes AMG GT (2016).
Mercedes AMG GT (2016) is 59 mm (2.32 inch) wider and 383 kg (844 lbs) lighter than Cadillac CT6-V (2020).