Audi Q8 (2018) is 865 mm (34.06 inch) longer, 182 mm (7.17 inch) wider, 406 mm (15.98 inch) higher and has 529 liters (18.68 ft3) bigger cargo space than Mercedes SLK-Class (2014).
Mercedes SLK-Class (2014) is 720 kg (1,587 lbs) lighter than Audi Q8 (2018).