I have an 01 A4 1.8T Quattro.-wagon-. It accelerates really realy slowly. Even if i floor it. and in all gears. I have heard something about heat doing something..but it happens during the winter also. When the turbo kicks in it is still fairly slow to get going. Whats up?!

 

If you don't have a CEL, change the air filter and spark plugs.
If this doesn't help, it could be a clogged fuel filter.