2008 Audi A6 4.2L Quattro – Milltek Performance Exhaust UpgradeA few pictures detailing the Milltek performance exhaust upgrade on our customer’s pristine 2008 Audi A6 4.2L Quattro. Enjoy !! You Might Also Like Know Your Vehicle’s Oil Spec May 16, 2014 Is Your Vehicle Trip-Worthy ? July 15, 2020 Your Battery — Size Does Matter !! March 12, 2013