GMC Yukon XL (2018) is 360 mm (14.17 inch) longer, 125 mm (4.92 inch) wider, 71 mm (2.80 inch) higher and has 1012 liters (35.74 ft3) bigger cargo space than Mercedes X-Class (2017).
Mercedes X-Class (2017) is 387 kg (853 lbs) lighter than GMC Yukon XL (2018).