Audi Q8 (2020) is 702 mm (27.64 inch) longer, 214 mm (8.43 inch) wider, 274 mm (10.79 inch) higher and has 523 liters (18.47 ft3) bigger cargo space than Mercedes A-Class (2015).
Mercedes A-Class (2015) is 875 kg (1,929 lbs) lighter than Audi Q8 (2020).