Cadillac XT6 (2020) is 504 mm (19.84 inch) longer, 25 mm (0.98 inch) wider, 461 mm (18.15 inch) higher and has 6 liters (0.21 ft3) bigger cargo space than Mercedes AMG GT (2017).
Mercedes AMG GT (2017) is 482 kg (1,063 lbs) lighter than Cadillac XT6 (2020).