I want to know why my car is "bucking" when I accelerate? I have Turbo, it's not kicking in, I've replaced the sparkplugs(Bosch), Air Filter, and Fuel Filter, regular oil change,etc. I baby my car, WTF?
Mick is right. Take your car to an Audi workshop and have them run a diagnostic on it. If there are any firing problems, the test will identify them.
However, it sounds to me like you are having some problems getting your fuel to your engine. You may want to replace your fuel pump before you go in for the diagnostic. Replacing the fuel filter was a move in the right direction. Next step is the pump. They aren't so expensive and you will need a new one soon even if yours isn't bad yet.
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