Because of the BS6 norms, Audi has discontinued its diesel engines as of now, with a possible relaunch in the future. So as the original deadline of BS4 norms passed, Audi exhausted its entire BS4 stock. That includes A3, A4, A5, Q3, Q5 and Q7. So now, you can only buy the A6, A8 L and Q8.16 Apr 2020