GMC Yukon (2015) is 510 mm (20.08 inch) longer, 114 mm (4.49 inch) wider and has 964 liters (34.04 ft3) bigger cargo space than Mercedes G-Class (2018).
Mercedes G-Class (2018) is 79 mm (3.11 inch) higher and 15 kg (33 lbs) lighter than GMC Yukon (2015).