Do you want to find out which car is the best, Audi A3 or Audi A4 ? CarnBikeCafe brings you a detailed comparison between Audi A3 and Audi A4 . Audi A3 Price starts at Rs.29.00 Lakh (ex-showroom) for E 1.2L Kappa 5-Speed MT and Audi A4 Price starts at Rs.46.99 Lakh (ex-showroom) for Smart 1.2 5 Speed. 2900000.00 is cylinder, 1197 cc Engine can generate 83 bhp @ 6000 rpm power whereas 4699000.00 is a cylinder, 1199 cc Engine can generate 118.27 bhp @ 5500 rpm power. In terms of mileage, Audi A3 provides a mileage of 17.5 kmpl (base model), and Audi A4 has a mileage of 17.44 kmpl (base model).