Audi R8 V10 Plus or BMW M4 or Porsche 911 Turbo S?
  • Joydeep Sen
  • Sep 21 2015

September 21: Autocar India tests the final 3 sedans, the Audi R8 V10 PLus, Porsche 911 Turbo S and the BMW M4 to their limits with the fastest Indian, Narain Karthikeyan.