2020 Audi A6 problems

Filed Oct 27, 2026 · Electrical, Locks · 32,000 miles · PA

The contact owns a 2020 Audi A6. The contact stated that while the vehicle was parked, the malfunctioning system central locking error message was displayed. The vehicle was taken to an independent mechanic, where it was diagnosed with a central locking system malfunction. The contact was advised to take the vehicle to the dealer. The dealer was contacted and made aware of the failure. The vehicle was scheduled for an upcoming diagnostic test. The contact stated that the failure was a known failure with similar vehicles. The failure mileage was approximately 32,000.

Filed Oct 8, 2026 · Electrical · PA

Central locking malfunction. Vehicle reports central lock error and can’t be opened easily from outside or inside. Unlocking from the key fob leads to the door locks to malfunction. Operating door handles is impossible from inside or outside. All doors are impacted.

Filed Sep 3, 2026 · PA

The electronic/central door locking system on my 2020 Audi A6 malfunctioned. The vehicle and affected components are available for inspection upon request. The vehicle was running with my two young children secured in car seats in the rear seats. I briefly exited and closed the driver's door. When I attempted to re-enter, the vehicle was locked and I was unable to gain access for approximately 10 minutes. My key fob was in my pocket but the proximity/keyless entry system failed, and repeated attempts with both my primary and spare key fobs failed to unlock the vehicle. My children were too young to operate the locks or release themselves from their car seats. I was preparing to break a window when the driver's door suddenly began functioning normally again after approximately 10 minutes. This created a serious safety risk because I could not access my young children in the vehicle during the malfunction. An authorized Audi dealer subsequently inspected the vehicle and diagnosed faults in both rear door latch units and recommended replacement. Audi of America has also been notified of the incident and dealer findings. The dealership quoted me a 2600$ repair for both door latches and refused to provide any assistance despite the obvious safety risk of this defect. the vehicle is almost exactly 5 years form purchase date with approximately 46k miles Prior to this incident, the vehicle had displayed "Central locking malfunction" and child-lock related warnings. The front passenger door latch mechanism was also replaced by Audi under warranty in July 2024 following a previous locking-system concern. This vehicle has now experienced locking-system problems involving multiple doors. I am concerned this intermittent failure could recur and again prevent access to vehicle occupants. Copies of dealership inspections/repairs can be provided on request

Filed Mar 7, 2026 · Electrical · NJ

Audi A6s have had massive issues with the door actuators. There are times when you go open the passenger side doors (both front and rear) and the doors will not open as there is either an electrical, software, or device specific issue. It requires 2-3 pulls of the door latch to open the front and rear passenger doors. The issues keep appearing a month or two after the dealership supposedly fixes the issue. I have had this fixed/reviewed 4+ times between Freehold, NJ and Cherry Hill, NJ Audi dealerships. This has been going on since I purchased the car in early 2021. I have asked them to push this up to Audi corporate and have received no response. Audi will also not offer a lemon buyout for these door issues. I believe this needs to be heavily reviewed as if you search the Audi forum websites online, this is a constant problem for the 2018-2023 A6s.

Filed Mar 7, 2026 · Electrical · NJ

The Audi software/MMI system has issues showing the 360 cameras in addition to the rear facing camera. Every few starts when I back out of a parking space/garage, the side mirror cameras show a black or camera with a cancel sign on the screen. The issue will not stop until the car is parked/off. for at least an hour. This issue has been happing since I purchased the car back in early 2021 and Audi did not "lemon-out" the car. I believe this is just as dangerous as the recent backup camera recall. I have asked Freehold, NJ Audi and Cherry Hill, NJ Audi to review, but they said if it doesn't happen when there, they can't action. I believe this is the same software issue the backup camera has and requires a similar recall as drivers rely on the side cameras for parking and there is a risk we c an hit another object or person.

Filed Feb 8, 2026 · Electrical, Seats · MT

* Passenger front Seat wiring harness corrosion and failure due to water ingress due to leaking web plate in the longitudinal member on passenger side. Water ingress in passenger compartment caused electrical failure and black mold to grow in the interior carpet and seat rails as well as in an electrical well in the floor board. *Black mold and mildew can cause long term health risks to those persons exposed especially if one didn’t know the mold was present. *The vehicle has been repaired at VW dealership in Missoula, MT. Service tech couldn’t figure where the water was coming from. Finally did research to find an Audi TSB 2059792/5 with the cause and remedy. *Recently Purchased this car and later found the seat not working. The VW dealership/service found the electrical corrosion and mold. Mold was not visible until the seat was moved. Mold was extensive throughout the passenger side under the seat - spread and growing under the carpet, insulation and in the electrical well in the floor board. Pictures attached - tech write up also available upon request. No warning lights were present. ** Audi put out a TSB (Tech Service Bulletin) in 2023 and repaired the cars under warranty - assume this was a wide spread issue for a TSB to be issued and for Audi to manufacture parts to fix the problem. Mold can have serious long term consequences to anyone exposed. I believe Audi should have done a recall for safety reasons. I just bought the car on 1/10/26 used with under 40,000 miles. Carfax or other research did not turn up a recall. I have sent a letter to Audi of America detailing the problem, referencing the TSB and asking them to cover the cost of repair as they had covered the cost on vehicles under warranty. This car is just out of the 5 year warranty but has only 40,000 miles on it. No recall was issued that I can find. Any help you render would be appreciated. Mold exposure is serious if not immediate.

Filed Jan 6, 2026 · Body, Electrical · 67,000 miles · NJ

The contact owns a 2020 Audi A6. The contact stated that while the vehicle was parked, water leaked into the vehicle and accumulated in the rear passenger’s side area of the vehicle. The contact initially believed that the failure might be related to inclement weather; however, the issue persisted. The vehicle was taken to a dealer, where a video diagnostic inspection was performed. The dealer diagnosed that water had entered in through the longitudinal member and passenger’s side footwell, causing damages to the gateway control module which required replacement. The vehicle was not repaired. The contact expressed concerns that water intrusion could create a hazardous condition and potentially lead to additional vehicle failures. The manufacturer was made aware of the failure. The approximate failure mileage was 67,000.

Filed Nov 9, 2025 · Body · CT

I was traveling at ~65mph on the freeway when the sunroof spontaneously exploded. It was louder than a gunshot—I nearly lost control of the vehicle. The explosion occurred in the outward direction. There was no evidence of impact of preexisting damage. Internet research suggests this is not an uncommon occurrence.

Filed Oct 17, 2025 · Electrical · SC

Water intrusion in passenger floor board which causes problem with control module and reduces acceleration

Filed Feb 17, 2024 · Fuel system · NJ

Audi issued a recall for our vehicle’s fuel level sender which reports the amount of fuel in the tank to our fuel gauge display in late 2022 or early 2023. The reason for the recall stems from a safety issue in which the car incorrectly can display that there is more fuel in the tank than what is actually there. Our local dealership’s service center, Princeton Audi initially completed this recall repair in Late February or Early March of 2023 while the car had roughly 25-26,000 miles on it. Less than a fews days later, the recall repair failed and our car shutdown on us leaving my wife stranded while I was having surgery unable to help her. I escalated and reported this issue to Audi of America immediately to create awareness as this was dangerous. The Princeton Audi Service Center attempted to repair the recall a second time and assured us the repair was successful. The same issue has unfortunately resurfaced less than a year later, in February of 2024 while the vehicle has only 33,398 miles on it. After a third attempt to repair this recall, the Princeton Audi Service advisor confirmed the fuel level sensor was again faulty. Regretfully we are still seeing inaccurate reporting of the fuel levels in our car creating a perpetually dangerous situation for myself, my family, and others on the road. Our car can shutdown on a major highway if it runs out of gas because the fuel gauge display keeps showing we might have half a tank or more due to the inaccurate reporting from the fuel level sender. After contacting Audi of America again about this failed recall, they seem to be dodging responsibility for the failed remedy and providing no recourse to ensure the safety of myself, my family, or those we out at risk if we keep driving this vehicle. The Princeton Audi Service center keeps stating they have made the repair, but the recall remedy keeps failing for us. Please help us as they refuse to replace the vehicle or buy it back after the failed recall.