Are you in the market for an Audi A6? Before you make a purchase, it's important to know which years to avoid. The Audi A6 has had its fair share of issues, ranging from problems with the fuel system and electrical system to issues with the automatic transmission and tires. In this post, we'll take a closer look at the years to avoid and why. Worst Years of Audi A6 by Complaints, Severit...