GMC Yukon XL (2018) is 1031 mm (40.59 inch) longer, 114 mm (4.49 inch) wider and has 1505 liters (53.15 ft3) bigger cargo space than Mercedes G-Class (2019).
Mercedes G-Class (2019) is 79 mm (3.11 inch) higher and 77 kg (170 lbs) lighter than GMC Yukon XL (2018).