GMC Yukon XL (2021) is 1051 mm (41.38 inch) longer, 126 mm (4.96 inch) wider and has 1989 liters (70.24 ft3) bigger cargo space than Mercedes G-Class (2020).
Mercedes G-Class (2020) is 26 mm (1.02 inch) higher and 87 kg (192 lbs) lighter than GMC Yukon XL (2021).