Audi A6 Complaints

30 consumer complaints on file.

#11757732August 18, 2026
POWER TRAIN
The contact owns a 2024 Audi A6. The contact stated that while driving at an undisclosed speed, the vehicle suddenly came to an abrupt stop. The contact stated that everything turned off except for the instrument panel, which displayed an accident warning light. The vehicle was not in a crash, but all the features became inoperable. The vehicle was able to be restarted and driven. The dealer was notified of the failure and acknowledge the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 34,034.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11756202August 11, 2026
ELECTRICAL SYSTEM
THE GATEWAY COMPUTER WAS FRIED DUE TO WATER CONSUMPTION. I WAS DRIVING AND LOST ALL POWER IN THE CAR AND HADE TO PULL OVER WITH NO POWER TO HELP ME. ALSO THIS WAS ALREADY RECALLED IN 2019-2022 AUDI FIX WAS TO PUT A PLASTIC BAG AROUND THE GATE WAY COMPUTER BUT THIS DID NOT PRETECT THE GATEWAY PROPERLY. THE GATEWAY IS LOCATED UNDER THE REAR SEAT DEALER CONFIRMED THE GATEWAY HAD WATER DAMAGE AND WOULD NOT WARENTY THE PROBLEM EVEN THOUGH I STILL HAD A WARENTY AUDI DELT WITH MY INSURANCE TO CORRECT THR PROBLEM. ALL WORNING LIGHT APPERIRED WHEN THE PROBLEM ACCURED ONLY.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11754019July 31, 2026
ELECTRICAL SYSTEM, ENGINE, FUEL/PROPULSION SYSTEM
vehicle was put into gear and lost propulsion . Then all adas warning lights illuminated. This is the second time this has happened
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11749161July 8, 2026
LATCHES/LOCKS/LINKAGES:DOORS:LOCK
The contact owns a 2025 Audi A6. The contact stated that while parked, the vehicle locked independently, trapping the driver and passengers inside. The failure occurred repeatedly; during the first two occurrences, unknown warning lights illuminated. The vehicle was taken to the dealer, where a locking mechanism failure was diagnosed, and the vehicle was repaired; however, the failure persisted. The manufacturer was made aware of the failure. The contact stated that the vehicle was waiting to be towed to the dealer due to the same failure. The failure mileage was approximately 7,017.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11745641June 22, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
Drive Train suffered a life threatening loss of propulsion on a main highway . My safety was at risk due to the losing propulsion leaving me in the middle of the highway in an unsafe vehicle. Multiple communication-module fault codes. Dealer has acknowledged these issues. there were warning lights and multiple messages after .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11738142May 15, 2026
UNKNOWN OR OTHER
My 2021 Audi A6 produces a strong mold and mildew odor from the HVAC/air conditioning system. The smell occurs consistently after the air conditioning is turned off and persists when entering the vehicle. The issue appears to originate from mold growth on the evaporator coil or dampers, likely caused by moisture accumulation and inadequate condensate drainage in the HVAC system. The vehicle was inspected and treated at an authorized Audi dealership; however, the treatment did not resolve the issue and the odor returned. Online owner forums and communities document the same problem across multiple Audi models and model years, suggesting this is a systemic design or manufacturing issue rather than an isolated incident. A passenger in the vehicle — a minor child with a documented mold allergy — has experienced allergic reactions as a result of exposure to the vehicle's air conditioning output. This constitutes a health and safety concern. The mold contamination in the HVAC system poses a risk to vehicle occupants, particularly those with respiratory conditions or mold sensitivities. I am requesting that NHTSA investigate whether a defect exists in the HVAC/evaporator system design across Audi vehicles, and whether a safety recall or technical service bulletin is warranted.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11736958May 11, 2026
ENGINE AND ENGINE COOLING
The contact owns a 2021 Audi A6. The contact stated while driving at an undisclosed speed, the vehicle overheated. The engine overheating and the low coolant warning light illuminated. In addition, the engine seized. The vehicle was taken to the dealer where it was diagnosed with a coolant leak and a failed coolant pump vacuum. The contact was informed that the coolant pump vacuum assembly needed to be replaced. The vehicle was not repaired. In addition, the contact was informed that the failure was a known failure of the vehicle. The manufacturer was made aware of the failure and a case was filed. The contact was advised to contact the NHTSA Hotline and report the failure. The failure mileage was approximately 80,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11736875May 10, 2026
ENGINE
Thermostat housing and oil cooler bracket leaking coolant with only 56k miles on the car
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11735671May 4, 2026
ELECTRICAL SYSTEM, STEERING, LANE DEPARTURE: WARNING
We are reporting serious safety-related faults involving my leased 2026 Audi A6, VIN [XXX] , and a same-model 2026 Audi A6 loaner provided by Audi Central Houston. Core safety issues: 1. My vehicle previously displayed a Park/rollaway warning indicating Park could not be engaged. 2. My vehicle has had repeated starting-system faults, including: “Engine start system: malfunction! Please contact Service.” 3. Our vehicle has been the subject of multiple repair visits at Audi Central Houston and is currently at the dealer, available for inspection. 4. After the third repair order, Audi Central Houston represented the vehicle was ready for pickup. Before we accepted return, the same starting-system malfunction reportedly recurred during Audi’s own test-drive/verification process. Audi added that April 30 recurrence to the still-open third repair order. 5. While our A6 remained at the dealer, Audi Central Houston provided a same-model 2026 Audi A6 loaner. That loaner displayed: “P not possible. Risk of rolling away! Please contact Service.” A photo is available. 6. Because the loaner warning stated Park was not possible and there was a risk of rolling away, we did not leave it parked unattended and returned it directly to Audi Central Houston. The apparent failed/malfunctioning systems involve Park engagement, electronic shift-by-wire, transmission control, parking interlock, starting-system control, electrical modules, software, gateway communication, or related safety-critical controls. Safety is at risk because a vehicle that cannot reliably engage Park may roll away and injure occupants, pedestrians, bystanders, or service personnel. Audi Central Houston has inspected/serviced vehicle. Audi of America/VW Group has been notified under Audi Case No. XXX. We request NHTSA investigate whether 2026 Audi A6 vehicles have a safety defect involving Park engagement, rollaway risk, starting-system malfunction, transmission/electronic controls, software, INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11732071April 18, 2026
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING, FORWARD COLLISION AVOIDANCE: WARNINGS
On 04/16/2026 at 10:19 my car became unsafe to drive and I had multiple safety errors including: Active front assist unavailable Adaptive cruise assist unavailable Emergency assist unavailable Traffic sign recognition unavailable Adaptive light malfunction High beam assistant malfunction
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11730290April 9, 2026
POWER TRAIN
I was driving my vehicle when the engine surged and then a transmission warning light came on and there was an immediate and complete loss of drive power. After the vehicle glided to a stop, there was no drive transmission in either forward or reverse. There was no pre-warning and no earlier incidence that led up to this issue. The vehicle is five years old with 39,834 miles and has had all routine maintenance and mileage interval services performed at the dealership, including its recent (Dec-25) 40,000-mile service. Thankfully this complete failure occurred when I was in my neighborhood and travelling 20mph; otherwise, the results could have been catastrophic had it occurred on a multilane highway at speeds of 65-70 MPH. The vehicle was towed to Audi of Indianapolis where the issue was identified as one broken bolt and two loose bolts for the transmission filter cap. This matches a known Audi Issue with a Technical Service Bulletin issued December 13, 2024, where they acknowledge a complete loss of power and a root cause of broken/loose bolts in the transmission filter. This is a known issue and is happening on low mileage well serviced vehicles. Because this issue is known and could result in a severe accident and/or loss of life under high-speed multi-lane highway conditions, it seems Audi of America should issue a recall versus just a TSB and/or extend the warranty for this issue up to 10 years or 100,000 miles which would, perhaps, be considered a normal lifespan for a part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11728031March 30, 2026
ELECTRICAL SYSTEM, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
While driving yesterday, the MMI reset and included the dashboard. The dash completely froze for a couple minutes(including the speedometer), and then the whole system blacked out and restarted. There has been a check engine light on since I got the car in December. Havent been able to get a service appointment with a loaner. Also since new, adaptive cruise control works intermittently with a warning that a door is open(when all doors are completely closed).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11727126March 25, 2026
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL, LANE DEPARTURE: ASSIST, STRUCTURE:BODY
The passenger doors fail to open from the outside. The only way to access them is through the driver's door and to use the inside door handles. The dealer is aware of the issue and it was caused by a software update and Audi/VW have no confirmed fix for it. The cruise control does not always operate and gives an erroneous error stating "door open." The dealer has confirmed this error and states there is no repair available. The issue was caused by a software update and Audi has no confirmed fix at the moment. The trunk will not always latch. When closing the trunk goes to the first latch but then fails to fully close. The dealer has made multiple repair attempts and the issue still exists.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11724024March 13, 2026
LANE DEPARTURE: BLIND SPOT DETECTION, FORWARD COLLISION AVOIDANCE: WARNINGS, FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
I own a new 2026 Audi A6 Prestige that I just purchased and have 320 miles on so far. The vehicle is experiencing a driver assistance system malfunction. The instrument cluster repeatedly displays “Driver assistance: limited,” along with warnings that Lane Assist and High Beam Assist are unavailable. The warning messages and audible chimes occur repeatedly while driving, approximately every few seconds or minutes. The alerts and beeping repeatedly interrupt driving and create a distraction that takes the driver’s attention away from the road. This is a big safety issue. The vehicle has been taken to an authorized Audi dealership. The dealer confirmed the issue but advised that the fix is a software update that has not yet been released by the manufacturer. Because the update is not yet available, the vehicle continues to operate with driver assistance safety systems disabled and with repeated warning alerts occurring during normal driving. The concern is that the repeated alerts and chimes during driving create a driver distraction and affect safe operation of the vehicle. The manufacturer has indicated a software update may be released in the future, but there is currently no repair available. This is a safety concern as it constantly takes me away from driving and looking at the constant alerts and beeps. These includes items such as: - alerts repeat while driving - driver-assistance safety systems unavailable - warning tones and pop-ups repeatedly distract the driver I do not blame the dealership as they have done everything they can do, but how can Audi not make this a top priority to be fixed. I am told that this is impacting almost all new Audi cars including the A5 and A6s. Thanks for your help. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720235February 24, 2026
ELECTRICAL SYSTEM, POWER TRAIN
My alternator was not working and it was a recall and I paid to fix it and they don’t wanna pay me back. I got a new part from audi and fix it at the shop and they don’t wanna pay anything just called and she said we don’t pay only if he’s done at the dealer. And I don’t believe that! Bc dealer told me they pay if I fix it any where to get done quick bc was out stock
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11719386February 20, 2026
UNKNOWN OR OTHER, VISIBILITY/WIPER
I am reporting a manufacturing defect involving the dashboard on my 2022 Audi A6. The dashboard has begun bubbling and warping, particularly near the area close to the windshield. This defect appears to be common among Prestige‑trim Audi A6 vehicles, as other owners have reported similar dashboard warping. The warping causes the dashboard material to rise upward, which reflects additional glare and partially obstructs visibility through the lower portion of the windshield, especially in certain lighting conditions. This reduces my ability to clearly see hazards low on the road ahead, creating a potential safety risk. Additional Details: - The vehicle has not been modified. -The issue has progressively worsened over time. - The defect appears to affect normal forward visibility and could distract the driver. Audi has not issued a recall for this known problem, despite multiple similar complaints from other owners (Effected Models per online research: ETron, R8, A6, A7, A8, Q7, Q8). I am asking NHTSA to investigate this dashboard defect as a potential manufacturing defect and safety hazard due to obstructed visibility and distracted driving caused by glare/reflection from the warped dashboard surface.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714296January 29, 2026
ELECTRICAL SYSTEM
The car started with charging issues, Audi said they performed an update that was supposed to fix the problems however they did not complete the update like stated. . The car on 2 occasions while driving MMI screen went blank almost caused me to crash. There was no indication or warnings I took it in again where it’s still at. . The vehicle has been in service several times without being repaired. The charging issue has been on going and does not allow charging or disconnects. on several occasions the car driver assist like lane change braking have gone off without warning.even after saving my preference due to it not saving preference. I have called their support we have tried reinstalling the app. I have been told each time at the Audi service it’s something different. Currently where it’s being serviced again it’s now the charging port. And the battery gets to hot and the previous Audi service didn’t complete the update.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11707005December 25, 2025
UNKNOWN OR OTHER
Was driving on the highway, all of a sudden showed a sign of transmission malfunction and started decelerating which I could safely navigate the vehicle to the side of the road, got the vehicle towed to repair shop which they reported a transmission code P17F900- parking lock mechanical malfunction with codes P074700 and p077700 I am just out of warranty for this vehicle as I crossed 48000 miles. They have issued bulletins regarding this problem but no recall or extended warranty on that part this I deem as dangerous
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11703548December 7, 2025
ELECTRICAL SYSTEM
While driving at normal speed, the entire digital instrument panel suddenly went black and a red warning triangle appeared. I lost all gauges, including speedometer, fuel level, and warning indicators. This created a serious safety risk because I was in active traffic and had no way to know my speed or see alerts. My VIN shows an open recall for this exact defect (instrument cluster blackout), but the failure has already happened during normal driving. I consider the vehicle unsafe to drive until repaired.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11690751October 1, 2025
AIR BAGS, STRUCTURE:BODY, ELECTRICAL SYSTEM
While driving slowly through a shopping mall parking lot with my wife and [XXX] son onboard, the vehicle suddenly malfunctioned. The central locking system cycled repeatedly, and a warning briefly appeared mentioning a steering/light malfunction. Immediately afterward, the emergency release cables for all four doors deployed externally as if the car had been in a crash, even though no collision occurred. At the Audi dealership (Audi Sugar Land, TX), technicians confirmed by diagnostic scan that: The ABS control module stored a fault for “invalid data.” That invalid data was relayed to the airbag module, which falsely triggered a “crash response active” condition. All four door modules stored crash response faults and deployed the emergency release cables. The issue was confirmed, faults were cleared, but no parts were replaced. This false crash response put my family at risk because it activated emergency safety mechanisms without cause. My concern is that if invalid data can trigger a false crash event, it could also trigger other systems, such as airbags, leading to potential injury. The incident occurred with approximately 1,100 miles on the vehicle, one week after purchase, and immediately following the first 100% charge. The dealer documented the event and consulted Audi Technical Assistance, who authorized release of the vehicle after clearing the codes. This is a serious safety defect because critical systems activated without a real crash, creating unnecessary risk for occupants. The vehicle is available for inspection upon request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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