GMC Yukon XL (2017) is 33 mm (1.30 inch) longer, 47 mm (1.85 inch) wider, 40 mm (1.57 inch) higher and has 1492 liters (52.69 ft3) bigger cargo space than Mercedes GL-Class (2020).
Mercedes GL-Class (2020) is 126 kg (278 lbs) lighter than GMC Yukon XL (2017).