Audi Q8 (2019) is 414 mm (16.30 inch) longer, 198 mm (7.80 inch) wider, 252 mm (9.92 inch) higher and has 445 liters (15.71 ft3) bigger cargo space than Mazda 3 (Sedan) (2016).
Mazda 3 (Sedan) (2016) is 860 kg (1,896 lbs) lighter than Audi Q8 (2019).