Audi S4
A Brief History of Audi
AOA (Audi Of America) 800-822-2834 option #3 -- (voice) 248-754-6504 (fax)
Audi B5 S4 engine Study Guide (pdf)
Audi RS4 Study Guide (pdf)
B5 S4 Forum Cliff's Notes
CPO: Audi Certified pre-owned (Audi CPO site)
CPO: Audi Certified Pre-Owned Coverage (CPO) List
CPO: So what exactly is a CPO warranty good for?
S4 nag list.... (Most Common Problems)
The history of the B5 Color Choices
The RS4 by quattro
CPO: Researching your service history