Disclosure: This post may contain affiliate links, meaning when you click the links and make a purchase, we receive a commission. The Audi S4 B6 was first introduced in 2003 and was the S4's third generation. Unfortunately, it wasn't in production for very long, it ended in 2005 for a much more modern S4 B7. It was built on the Volkswagen Group's B6, or PL46, platform. The … [Read more...] about Audi S4 B6 Ultimate Guide