There are 1 owner-reported electrical system complaints for the 2009 Audi A6in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Old Battery replaced by Audi dealer with new battery since car would not start. Second Audi dealer checked battery and connections since car would not start. Car started at dealer; however car doesn’t start now about a week after picked up at dealer. This is a major safety issue and driver & passengers are at risk creating a safety hazard of the car not being Able to start. Southern Calif AAA was called to jump start car battery multiple times in last several months. There was no warning on the car either that of a battery issue or that the car was not going to start. The car is available for inspection upon advanced request for an appointment.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026