GMC Yukon XL (2018) is 936 mm (36.85 inch) longer, 178 mm (7.01 inch) wider, 50 kg (110 lbs) lighter and has 1685 liters (59.50 ft3) bigger cargo space than Mercedes G-Class (2017).
Mercedes G-Class (2017) is 64 mm (2.52 inch) higher than GMC Yukon XL (2018).