One problem related to engine noise has been reported for the 2012 Audi A6. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Audi A6 based on all problems reported for the 2012 A6.
2 problems I have and I see more and more people having it, the chain rattle on the back of the engine on the passenger side and the flex pipe braking and making the car sound like it has a tin can both on the passenger side, the problem with the timing chain rattle whenever you start the car makes it sound like a loose heat shield, I went and checked the car at multiple mechanics/dealerships and all know those are common problems with the 3. 0t A6 2012.