Hello there I have an Audi a4 2002 I was driving it and suddenly the car sounded like there was some air coming out from inside the hood . I pulled over to the side and the car stoped on me . I tried turning it back on and the ignition would turn on but motor sounds like it wants to start but it won't . Someone please help . P.s the car didn't mark that it needed water oil nor anything

 

im assuming your car has a turbo? if so that could very well be your problem.

if not try unpluging your mass airflow sensor.