GMC Yukon XL (2020) is 1050 mm (41.34 inch) longer, 114 mm (4.49 inch) wider and has 1505 liters (53.15 ft3) bigger cargo space than Mercedes G-Class (2018).
Mercedes G-Class (2018) is 79 mm (3.11 inch) higher and 238 kg (525 lbs) lighter than GMC Yukon XL (2020).