2019 Audi A6: engine stalls while driving

Filed Feb 2, 2026 · Electrical · VA

Incident Summary for the federal safety agency Complaint Component Involved: Electrical System: Alternator / Charging System Vehicle State: In motion (City street/Highway) Speed at Failure: Approximately [Insert Speed] MPH Narrative Description: The vehicle suffered a catastrophic electrical failure while in motion, resulting in an immediate and total engine stall in live traffic. This failure occurred without sufficient warning to safely maneuver the vehicle to the shoulder, creating an immediate safety hazard and risk of collision. This is a recurring safety defect: Repeat Failure: This is the second time this specific VIN has suffered a mid-traffic alternator failure. An Audi-certified replacement was installed by an authorized dealer (Audi Arlington) in 2022 following an identical incident. That replacement part has now failed. Failure of "Service Action" (27BQ): Despite an active Service Action for this component, the vehicle was not repaired during multiple prior service visits at authorized dealerships. The manufacturer failed to proactively address the defect, leading to this second roadside emergency. Cascading Electrical Instability: This VIN has a documented history of systemic electrical and safety system failures, including a gasket failure that compromised safety electronics and a total fuel system replacement due to sensor failure. The manufacturer (Audi) has classified this sudden loss of power in traffic as "non-critical," despite the clear risk of high-speed collision and physical injury. I am requesting a formal investigation into the recurring failure of the 27BQ component and the adequacy of the manufacturer's current service remedy.

Filed Jan 28, 2024 · Electrical, Engine · OH

The car gave me electrical malfunction warning while driving on the highway, then all the screens turned black, and the car completely shut down while driving. The steering was still working, although heavier than usual, and the breaking also worked. The car slow down to a complete stop at the shoulder of the highway. This was very concerning, and thankfully happened close on exit with a shoulder at the side in which I was able to park the car.

Filed Nov 9, 2023 · Acceleration, Electrical · NH

Car shut down while driving due to the electrical system malfunction; had to get the car towed; ended up being a known issue by Audi with no recall related to the alternator; replaced with new alternator

Filed Dec 2, 2022 · Electrical · VA

On November 8, 2022, I was driving my vehicle to the Audi Arlington dealership to service an "Electrical System Malfunction" alert that had recently appeared. Approximately one mile into my drive the car completely shut down while driving. This happened while I was proceeding through an urban intersection. All systems shut down on the car simultaneously, including every screen, hazard lights, engine and power steering, to name a few. I was able to coast to a stop while only partially exit the lane of traffic. As the car was entirely nonresponsive, it needed to be towed from that point to Audi Arlington. Audi Arlington determined that the issue resulted from a 48V generator.

Filed Jun 19, 2020 · Engine, Transmission · 2,500 miles · RI

At a stop light the engine will shut off completely requiring you to restart the car. This happens intermittently and happens when the auto on/off is on or off. Leads to dangerous situations when in city traffic or stopped at a red light on highway. Two trips to audi and there are no error codes on the engine to diagnose the issue. Makes for very nervous driving when every stop light may cause your car to stall. Most recent issue the car would re-start and immediately stall, and then started shaking violently.

Filed Jan 15, 2020 · Electrical, Engine · 150 miles · NC

I acquired this car (2.0t) two nights ago and on three occasions (so far) the engine completely stalls when the car comes to a stop. Not the typical auto on/off feature function. I have to restart the ignition and put the car in drive again. Once, even in the middle of rush hour traffic. So far, the only consistent scenario is when I am on the second leg of a trip. For example, I get in the car at my office, drive to a store or daycare. Get back in the car, start up, drive a couple of miles and the car shuts down at a complete stop. Very unnerving on a brand new car with less than 200 miles on it. I've looked across the internet and it seems to be quite a widespread issue for vw and audi drivers of recent model cars. This is a safety concern and needs to be addressed.