Audi A3 (Sedan) (2017) is 267 mm (10.51 inch) longer, 61 mm (2.40 inch) higher, 162 kg (357 lbs) lighter and has 145 liters (5.12 ft3) bigger cargo space than Audi TT RS (2018).
Audi TT RS (2018) is 36 mm (1.42 inch) wider than Audi A3 (Sedan) (2017).
