Audi A6 (2019) is 479 mm (18.86 inch) longer, 90 mm (3.54 inch) wider, 2 mm (0.08 inch) higher and has 166 liters (5.86 ft3) bigger cargo space than Mazda 3 (Hatchback) (2014).
Mazda 3 (Hatchback) (2014) is 442 kg (974 lbs) lighter than Audi A6 (2019).