Audi A3 (Sedan) (2017) is 27 mm (1.06 inch) higher and 280 kg (617 lbs) lighter than BMW 4 Series Gran Coupe (2019).
BMW 4 Series Gran Coupe (2019) is 183 mm (7.20 inch) longer, 30 mm (1.18 inch) wider and has 56 liters (1.98 ft3) bigger cargo space than Audi A3 (Sedan) (2017).
