what kind of vehicle? sounds like spark knock. get better quality gas or maybe timing is off depending on year model and engine type. I hope that helps.
oops sorry yeh 02 VW, most likely spark knock, get your gas from a different station or add some fuel booster addetives.
is it your nails on the steering wheel? Keeping the beat to Bruno Mars? see, that's the way to cure it- turn up the jams and don't worry, 'bout a thing!
Looking for a Used Passat in your area?
CarGurus has 22,851 nationwide Passat listings starting at $900.
Search Volkswagen Passat Questions
Volkswagen Passat Experts