GMC Sierra 1500 (2019) is 675 mm (26.57 inch) longer, 93 mm (3.66 inch) wider, 578 mm (22.76 inch) higher and has 1378 liters (48.66 ft3) bigger cargo space than Mercedes AMG GT (2015).
Mercedes AMG GT (2015) is 345 kg (761 lbs) lighter than GMC Sierra 1500 (2019).