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moderate Owners of the 2020 Audi A6 have filed 15 NHTSA complaints about the electrical at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
| Model year | electrical complaints |
|---|---|
| 2016 A6 | 5 |
| 2019 A6 | 64 |
| 2020 A6 (this page) | 15 |
| 2021 A6 | 7 |
Of the 15 electrical complaints filed for the 2020 Audi A6, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
Among the 9 model years of Audi A6 in our records for electrical problems, this one ranks #2 by owner-complaint volume.
No new NHTSA electrical complaint has been filed on this vehicle in over 4 years — the issue may be aging out of the active population.
A short circuit in the starter generator increases the risk of a fire.
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
This bulletin provides informaiton when there are function issues in vehicles equipped with connectivity box low.
full bulletin at NHTSA ↗This bulletin provides informationwhen noises/vibration are detected from front of vehicle in dynamic mode.
full bulletin at NHTSA ↗This bulletin provides information when there are noises from the area around the instrument cluster.
full bulletin at NHTSA ↗This bulletin provides information when there are pixel faults on the virtual cockpit.
full bulletin at NHTSA ↗This bulletin provides informaiotn when the starter battery is discharged or defective.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
Water intrusion through the passenger-side longitudinal member is the most serious recurring complaint. Water collects in the footwell and under seats, corroding wiring harnesses and the gateway control module. Mold and mildew grow extensively in carpet, insulation, and electrical wells—sometimes not visible until the seat is removed. Audi issued TSB 2059792/5 in 2023 to address this, but no recall was issued. Out-of-warranty owners are fighting with Audi for coverage.
The 48V alternator/generator fails prematurely—some owners reported warnings at 1,400 miles, others at 26,000. When it goes, electrical systems shut down progressively; the vehicle can lose power entirely on the highway, with parking brakes engaging involuntarily and hazard lights dead. Dealers confirm this is a "well-known problem" but parts are back-ordered for months.
Passenger door latches stick and require 2–3 pulls to open. This recurs within months of dealership repairs. The Emergency Assist driver-monitoring system throws false alarms, jerks the seat belt, and applies brakes unexpectedly at highway speeds. Rear-view camera failures are intermittent—dealers won't fix them because the fault doesn't trigger in the shop, even though Audi has recalled other model years for the same defect.
Same Audi A6 electrical reports on nearby years: 2019
Water enters through leaking longitudinal member on passenger side, accumulates in passenger footwell and under seat areas, causing corrosion of seat wiring harness and gateway control module failure. Mold and mildew grow in carpet, insulation, electrical wells, and seat rails.
When: As early as 40,000 miles; reported on vehicles from early 2021 purchase onward
Symptoms owners cite: Passenger seat inoperability; Electrical system corrosion visible after seat removal; Black mold and mildew growth under carpet and insulation; No warning lights initially present; Gateway control module failure
Repairs/costs cited: Audi TSB 2059792/5 (issued 2023) provides remedy; dealership repair required; water intrusion source difficult to locate initially
Recalls/TSBs owners mention: TSB 2059792/5 issued in 2023; Audi covered repairs under warranty for in-warranty vehicles; no recall issued despite TSB existence
Alternator or 48V generator system fails while driving, causing progressive electrical system shutdown. Vehicle loses motive power, all electrical components shut down, brake and transmission lights illuminate, parking brake engages unintentionally, hazard lights become inoperative.
When: Between 13,500 and 26,000 miles; began at 1,400 miles for some vehicles
Symptoms owners cite: Electrical system malfunction warning; Progressive shutdown of vehicle systems over several miles; Loss of motive power; Inability to disengage parking brake; Windows rolling up/down unintentionally; Brake and transmission warning lights; Hazard lights non-functional; Complete vehicle shutdown
Repairs/costs cited: Replacement generator/alternator required; multiple dealerships report 2-month to several-month lead times and back-order status
Recalls/TSBs owners mention: No recall issued; Audi Service recommends immediate towing; described as 'well-known problem' by dealers
Safety-critical driver assistance features malfunction, including erroneous Emergency Assist warnings that vehicle is not drivable when driver has full control. Vehicle applies brakes and jerks seat belt unexpectedly during normal driving.
When: Starting at 1,400 miles; continued through 13,500 miles
Symptoms owners cite: Erroneous 'Emergency Assist, Driver take over the wheel' warnings at highway speeds; Unintended brake application and deceleration from 70 mph; Seat belt jerking; Multiple warning messages displayed
Codes mentioned: SOS module fault
Repairs/costs cited: Vehicle sent to dealership multiple times (at least 3rd service visit); inspection/servicing at Fort Collins Audi dealer
Recalls/TSBs owners mention: Fault confirmed by dealer; no permanent resolution reported
Passenger side doors (front and rear) fail to open on first or second attempt due to electrical, software, or actuator device failure. Requires 2-3 pulls of door latch to open. Issue recurs 1-2 months after dealership repair.
When: Since early 2021 purchase; recurring intermittently
Symptoms owners cite: Door latch requires multiple pulls (2-3 attempts) to open; Affects both front and rear passenger doors; Intermittent nature; recurs after repairs
Repairs/costs cited: Repaired/reviewed 4+ times at multiple dealerships (Freehold, NJ and Cherry Hill, NJ); issues persist after repairs
Recalls/TSBs owners mention: Audi declined lemon law buyout; no corporate escalation response; owner notes widespread issue on 2018-2023 A6 models per forum reports
Rear-view camera and 360-degree camera system malfunction intermittently. Rear camera displays black screen or cancel sign; side mirror cameras fail and prevent parking assistance functionality.
When: Recurring since early 2021 purchase
Symptoms owners cite: Black screen or camera with cancel sign displayed on startup when backing out; Rear environmental camera malfunction; Side mirror camera failure; System requires vehicle to be powered off for at least 1 hour to reset
Codes mentioned: B127D04 (Rear environmental camera faulty), B127F04 (multiple sporadic faults)
Repairs/costs cited: Fault codes present; dealership refuses repair because fault cannot be duplicated during shop visit; intermittent nature complicates diagnosis
Recalls/TSBs owners mention: Audi aware of issue and has recalled other model years for same defect; warranty repair denied on this vehicle
Dashboard display shows incorrect transmission status and goes dark intermittently. Vehicle can be driven hundreds of feet while display shows PARK even though vehicle is in DRIVE.
When: Occurring after vehicle startup
Symptoms owners cite: Display continues to show PARK after shifting to DRIVE; Display goes completely dark; Display resumes after several seconds showing correct DRIVE status
Vehicle displays cascading electrical system warnings indicating low battery charge, vehicle starting system failure, parking brake malfunction, stabilization control (ESC/ABS) malfunction, parking aid malfunction, and all-wheel drive malfunction. Attributed to failing 48V battery alternator.
Symptoms owners cite: Low battery charge warning; Vehicle starting system malfunction; Parking brake malfunction warning; Stabilization control (ESC/ABS) malfunction; Parking aid malfunction; All-wheel drive malfunction warning
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
Various components and system malfunctioned. Vehicle is in dealership for 3rd time on electrical/software/hardware troubles, SOS module. Yes, the vehicle is available for inspection. The car stopped me on a major highway thinking that I was not available "Emergency Assist, Driver take over the wheel" when I had both hands on the wheel, going straight and was fully in control of the vehicle.…
Water intrusion in passenger floor board which causes problem with control module and reduces acceleration
Experienced alternator / generator failure while driving. Various vehicle systems starting shutting down and warning symbols were displayed. Vehicle stopped running on the highway and needed to be towed to the local Audi dealership. The sequence / progression of failure occurred over several miles with complete vehicle shutdown and stop in the middle of a busy highway intersection. Dealer…
The contact owns a 2020 Audi A6. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power. The brake, transmission, and several other unknown warning lights were illuminated. Additionally, the windows inadvertently rolled up and down while driving. The vehicle was towed to the dealer where it was diagnosed that the driver's and passenger's side rear seats…
The rear view camera on the vehicle stops working intermittently. I have provided photographs of this to the Dealer. Their scanning of fault codes noted that the "right environmental camera faulty B127D04: Rear environmental camera faulty." The ticket also notes they found multiple sporadic faults for B127F04. Although they have admitted to finding faults with the camera, they refuse to…
The car literally stopped working while driving. All electrical components shut down. Unable to put the car into neutral to push it to safety. Had a hard time getting the vehicle towed because the parking break engaged somehow and we were unable to disengage it. Hazard lights did not work at all! Extremely unsafe situation to be in, especially if on a highway or expressway with vehicles…
Electrical system malfunction. Car will not run
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 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…
On more that one occasion, after starting the car and putting the car in drive, the display continues to show that the car is in PARK. I can drive several hundred feet with the display showing PARK. Then the display will go totally dark and, after several seconds, it will show that the car is in DRIVE.
It's a documented issue but not catastrophic. 15 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
Based on the 15 complaints filed, electrical issues most often appear around 44,500 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Yes — 1 active recall(s) cover electrical issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.