GMC Sierra 3500HD (2019) is 1537 mm (60.51 inch) longer, 106 mm (4.17 inch) wider, 701 mm (27.60 inch) higher and has 1488 liters (52.55 ft3) bigger cargo space than Mercedes AMG GT (2017).
Mercedes AMG GT (2017) is 1268 kg (2,795 lbs) lighter than GMC Sierra 3500HD (2019).