GMC Sierra 2500HD (2019) is 1154 mm (45.43 inch) longer, 96 mm (3.78 inch) wider, 687 mm (27.05 inch) higher and has 1377 liters (48.63 ft3) bigger cargo space than Mercedes AMG GT (2018).
Mercedes AMG GT (2018) is 1106 kg (2,438 lbs) lighter than GMC Sierra 2500HD (2019).