GMC Yukon XL (2014) is 993 mm (39.09 inch) longer, 119 mm (4.69 inch) wider, 292 mm (11.50 inch) higher and has 1822 liters (64.34 ft3) bigger cargo space than Mercedes GLC-Class (2014).
Mercedes GLC-Class (2014) is 594 kg (1,310 lbs) lighter than GMC Yukon XL (2014).