Audi Q7 (2014) is 430 mm (16.93 inch) longer, 110 mm (4.33 inch) wider, 78 mm (3.07 inch) higher and has 839 liters (29.63 ft3) bigger cargo space than Mercedes GLC-Class (2017).
Mercedes GLC-Class (2017) is 255 kg (562 lbs) lighter than Audi Q7 (2014).