Audi A3 Sportback (2017) is 43 mm (1.69 inch) higher and 345 kg (761 lbs) lighter than BMW 4 Series (2020).
BMW 4 Series (2020) is 455 mm (17.91 inch) longer, 67 mm (2.64 inch) wider and has 60 liters (2.12 ft3) bigger cargo space than Audi A3 Sportback (2017).
