Audi Q8 (2019) is 308 mm (12.13 inch) longer, 184 mm (7.24 inch) wider, 265 mm (10.43 inch) higher and has 384 liters (13.56 ft3) bigger cargo space than Mercedes C-Class (2017).
Mercedes C-Class (2017) is 730 kg (1,609 lbs) lighter than Audi Q8 (2019).