GMC Yukon XL (2017) is 633 mm (24.92 inch) longer, 106 mm (4.17 inch) wider, 601 mm (23.66 inch) higher and has 1822 liters (64.34 ft3) bigger cargo space than Mercedes AMG GT (2018).
Mercedes AMG GT (2018) is 1061 kg (2,339 lbs) lighter than GMC Yukon XL (2017).