Alfa Romeo 4C (2017) is 71 mm (2.80 inch) wider and 142 kg (313 lbs) lighter than Audi A3 (Sedan) (2016).
Audi A3 (Sedan) (2016) is 470 mm (18.50 inch) longer, 232 mm (9.13 inch) higher and has 315 liters (11.12 ft3) bigger cargo space than Alfa Romeo 4C (2017).
