Audi Q8 (2020) is 115 mm (4.53 inch) longer, 140 mm (5.51 inch) wider, 264 mm (10.39 inch) higher and has 324 liters (11.44 ft3) bigger cargo space than Mercedes E-Class (2014).
Mercedes E-Class (2014) is 390 kg (860 lbs) lighter than Audi Q8 (2020).