Audi A3 (Sedan) (2016) is 22 mm (0.87 inch) higher, 552 kg (1,217 lbs) lighter and has 101 liters (3.57 ft3) bigger cargo space than Ford Mustang (2016).
Ford Mustang (2016) is 326 mm (12.83 inch) longer and 120 mm (4.72 inch) wider than Audi A3 (Sedan) (2016).
