Audi A3 Sportback (2018) is 43 mm (1.69 inch) higher and 330 kg (728 lbs) lighter than BMW 4 Series (2015).
BMW 4 Series (2015) is 385 mm (15.16 inch) longer, 85 mm (3.35 inch) wider and has 65 liters (2.30 ft3) bigger cargo space than Audi A3 Sportback (2018).
