Audi A6 C6: Known Issues and Reliability

Here Are The Audi Allroad Years To Avoid - CoPilot

Audi RS6 (C6) Buying Guide: Powertrain - PistonHeads UK

Used Audi A6 C6 Reliability Most Common Problems Faults and Issues

Review: 2009 Audi A6 3.0T Quattro

Used car buying guide: Audi S6 (C6, 2006-2011)

Audi A6 [C6](2004-2011) Problems, Review, Faults and Information

The Audi RS6 V10 Buying Guide - Get your family V10 while you can

Used car buying guide: Audi S6 (C6, 2006-2011)

VW/Audi 3.0 V6 TDI Engine Specs, Problems, Reliability, oil - In-Depth Review

Video The 2003 Audi RS6 Is Amazing and Horribly Unreliable - Autotrader

A6 (C6) – MY2005-2011 – Carsniffer