Audi Q8 (2018) is 707 mm (27.83 inch) longer, 219 mm (8.62 inch) wider, 276 mm (10.87 inch) higher and has 523 liters (18.47 ft3) bigger cargo space than Mercedes A-Class (2017).
Mercedes A-Class (2017) is 780 kg (1,720 lbs) lighter than Audi Q8 (2018).