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What 113 owners told NHTSA about the 2019 Audi A6

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (113)Crash / fire / injury (3)Electrical system (84)Engine (31)Transmission & drivetrain (15)Steering (12)Driver assistance (11)Brakes (6)Lane Departure (5)Body & structure (3)Lights (3)Backup camera & sensors (2)

2 of 113 complaints match · Electrical system · crash/fire/injury only · clear filters

Sep 2, 2021Transmission & drivetrainElectrical systemFire

I was slowing down to stop at a traffic light when a message was displayed on the instrument panel that says "Electrical System Malfunction" with a yellow battery icon. A few seconds later the same "Electrical System Malfunction" with a red battery icon. Then the vehicle came to a complete stop and was inoperable. There was almo smoke coming from the hood near the positive battery terminal. The smoke had an electrical smell to it. I had no opportunity to pull over and was stuck in the middle of a very busy road right at the stop line of the traffic light. My family and I had to exit the vehicle with traffic on both sides of us and get to the side of the road safely. There was no prior indication that there was a problem, this happened all within about 5-10 seconds and I had no time to try and pull over to safety. I have found other complaints about this vehicle that are similar (see under the reliability section on Consumer Reports). The dealer identified the issue as an "internal failure" of the generator and 48v battery system, but had no explanation as to why it happened nor can they guarantee it will not happen again.

NHTSA ODI 11431540

Mar 9, 2019Electrical systemEngineCrash1 injury

STOP ENGINE OIL PRESSURE TOO HIGH LIGHT COMES ON DEALER DOES NOT HAVE SOLUTION. ENGINE COULD BLOW DURING OPERATION AND CAUSE ACCIDENT. VEHICLE RECALL NEEDED

NHTSA ODI 11185595

Working with the data? Download all 113 complaints as CSV · fetched from NHTSA July 14, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2019 Audi A6 verdict →