The Passat I think has either the weaker 012 or the o1x, look for FWD. I know they came in the A4 Some a6 and most of the S models but not all. In the UK they still used, in some Audis, the 01e in 2004 models. Do a google search I found a lot of info. Just type 01e or 01x (a little weaker...