How do I tell what class my audi is in. What is the difference between b5, b6 and so on. I did some research and best thing I found was on this link but it still doesen't answer my question. http://en.wikipedia.org/wiki/Volkswagen_B_platform#B4
By the way I have a 01 audi a4 1.8L T. quattro..

 

Have you looked here: A4 Models I do have to point out that the B6 platform are A4s from 2002-2005, but the link says it started in 2000. The B7 was released as 2005.5 models to the present. Also, have you checked Edmunds?

 

you have a b5 probly same exact car as me. especially if its silver and manual. you can tell by looking at the trunk lid. its not rounded off like the b6 and its a lot shorter than the b6 a4.