GMC Sierra 3500HD (2015) is 1154 mm (45.43 inch) longer, 96 mm (3.78 inch) wider, 662 mm (26.06 inch) higher and has 1641 liters (57.95 ft3) bigger cargo space than Mercedes AMG GT (2015).
Mercedes AMG GT (2015) is 1058 kg (2,332 lbs) lighter than GMC Sierra 3500HD (2015).