Car Defect Radar
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Built from NHTSA complaints and recalls collected for this model, generated October 26, 2026. Totals reflect what has been collected, not every complaint ever filed.
Confirm 11 recalls before you buy.

Ask the seller for proof the repair was completed, or run the free VIN check. Recall repairs are done at no cost by a dealer.

Recalls

11 total · 11 to confirm

Safety issues the manufacturer must repair for free. A recall means confirm the fix was done, not walk away.

Safety recall

Confirm it was repairedRecall 25V900000 · Dec 2025

A rearview image that does not display reduces the driver's view behind the vehicle, increasing the risk of a crash.

Remedy
Dealers will update the software, free of charge. Owner notification letters were mailed January 14, 2026. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90TV. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on December 23, 2025.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Electrical system recall

Confirm it was repairedRecall 25V201000 · Mar 2025

An instrument panel display that fails to show critical safety information, such as the speedometer or warning lights, increases the risk of a crash.

Remedy
Dealers will update the instrument panel module software, free of charge. Owner notification letters were mailed April 24, 2025. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 90VC.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Brakes recall

Confirm it was repairedRecall 23V601000 · Aug 2023

Incorrect brake fluid can reduce braking ability and increase the risk of a crash.

Remedy
Dealers will inspect the brake fluid reservoir cap and, if necessary, replace it, free of charge. Owner notification letters are expected to be mailed October 17, 2023. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen's number for this recall is 47T9.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Electrical system recall

Confirm it was repairedRecall 22V861000 · Nov 2022

A gateway control module shutdown will suddenly reduce engine power, increasing the risk of a crash.

Remedy
Dealers will install a protective cover, free of charge. Owner notification letters are expected to be mailed January 20, 2023. Owners may contact Audi's customer service at 1-800-253-2834. Audi's number for this recall is 90V2.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Safety recall

Confirm it was repairedRecall 22V742000 · Oct 2022

A blank rearview camera display can reduce the driver's rear visibility, increasing the risk of a crash.

Remedy
Dealers will update the infotainment unit software, free of charge. Owner notification letters were mailed October 25, 2022. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen's number for this recall is 91DZ.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Electrical system recall

Confirm it was repairedRecall 22V155000 · Mar 2022

An inaccurate fuel reading may cause an engine stall due to lack of fuel, increasing the risk of a crash.

Remedy
Dealers will install a new sensor in the tank, free of charge. Owner notification letters were mailed February 17, 2023. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 20DN.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Tires recall

Confirm it was repairedRecall 22V034000 · Jan 2022

Rear axle misalignment may cause premature or uneven tire wear, increasing the risk of a crash.

Remedy
Dealers will inspect the rear axle, adjust the alignment as necessary, and replace any prematurely or unevenly worn tires, free of charge. Owner notification letters were mailed March 3, 2022. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L5.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Seat belts recall

Confirm it was repairedRecall 21V606000 · Aug 2021

An unsecured child restraint system can increase the risk of injury during a crash.

Remedy
Dealers will inspect, and replace as necessary, the middle-rear seat belt assemblies, free of charge. Owner notification letters were mailed August 27, 2021. Owners may contact Volkswagen customer service at 1-800-893-5298 and Audi customer service at 1-800-253-2834. Volkswagen's numbers for this recall are 69CR (VW) and 69CS (Audi).
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Suspension recall

Confirm it was repairedRecall 21V295000 · Apr 2021

A broken lock nut may misalign the rear axle, causing a loss of control and increasing the risk of a crash.

Remedy
Dealers will replace the lock nuts and, if necessary, the associated bolts, free of charge. Owner notification letters were mailed June 4, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 42L1.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Airbags recall

Confirm it was repairedRecall 21V159000 · Mar 2021

An incorrectly manufactured air bag may not deploy properly, and could also eject plastic debris into the passenger compartment, increasing the risk of injury during a crash.

Remedy
Audi will notify owners, and dealers will inspect the passenger air bag score line, and repair it as necessary, free of charge. The recall begin March 26, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 70i2.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Electrical system recall

Confirm it was repairedRecall 20V749000 · Dec 2020

A detached connector can delay the activation of the restraint systems, including the side air bag, curtain air bag and/or seat-belt pretensioners during a side impact crash, increasing the risk of injury.

Remedy
Audi will notify owners, and dealers will inspect, and as necessary, replace the crash sensors in both front doors, free of charge. The recall began December 23, 2020. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 69BM.
Status
Remedy available. Confirm by VIN that this repair was completed.
What to do
Enter the VIN on NHTSA's recall lookup to confirm this car was repaired.

Owner complaints by system

16 total

Unverified reports owners filed with NHTSA, grouped by the part of the car. Useful for spotting patterns. Open a group to read recent examples.

Engine & powertrain

Minor
3

Most reports here involve fluid leaks.

fluid leaks 2sudden stalling 1
A recent report: 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…
Read full complaint

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.

Source: NHTSA complaint ODI #11736958 · view all complaints for this vehicle at nhtsa.gov

Electrical & infotainment

Minor
10

Most reports here involve sudden stalling.

sudden stalling 4software faults 3
A recent report: The vehicle went in for a software update. After purchasing the vehicle, the software update was part of a recall. Since that recall was performed, my vehicle has a lot of electronic glitches and a…
Read full complaint

The vehicle went in for a software update. After purchasing the vehicle, the software update was part of a recall. Since that recall was performed, my vehicle has a lot of electronic glitches and a lot of issues. My external Morty just got done, paying 4500 to track down a central locking issue on top of the electronic issues. Did not fix the issue. I am out of town going to see family in California. The vehicle central locking air came back up. I could not get out of the vehicle lock and unlock went out work. Also, the door handles would not work me and my daughter had to climb out of the car windows to get out. So like, you know what? And then we had to try to access the battery compartment to do a hard reset. The vehicle is scheduled to go back to the manufacturer dealer to look at it again next week. However, I will be contacting audi u s a again. Since I told him I had all these issues, they refused to help me out in any way. This is a very big safety issue.

Source: NHTSA complaint ODI #11762289 · view all complaints for this vehicle at nhtsa.gov

Brakes

Minor
1

Most reports here involve software faults.

software faults 1
A recent report: The Audi Pre-sense is activated by weather. I was driving during a thunderstorm and Audi Presence activated causing the car to come to a hard stop due to precipitation. It happened again backing out…
Read full complaint

The Audi Pre-sense is activated by weather. I was driving during a thunderstorm and Audi Presence activated causing the car to come to a hard stop due to precipitation. It happened again backing out of my driveway the Audi Pre-sense was activated and the car came to a hard stop. I thought I had back into another vehicle. This is very dangerous.

Source: NHTSA complaint ODI #11680304 · view all complaints for this vehicle at nhtsa.gov

Structure & body

Minor
1

Most reports here involve other issues.

other issues 1
A recent report: Sunroof spontaneously shattered while driving. No other cars around when this occurred. Caused a very loud BANG. Was driving on the freeway when this occurred. Dealer would not confirm issue was…
Read full complaint

Sunroof spontaneously shattered while driving. No other cars around when this occurred. Caused a very loud BANG. Was driving on the freeway when this occurred. Dealer would not confirm issue was spontaneous - felt something must have hit the car to cause this. No defined impact location on roof. Also, roof glass was pushed up in the middle instead of down like would be expected if something hit it from the outside. No warning before it occurred.

Source: NHTSA complaint ODI #11485934 · view all complaints for this vehicle at nhtsa.gov

Other systems

Minor
1

Most reports here involve other issues.

other issues 1
A recent report: 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…
Read full complaint

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.

Source: NHTSA complaint ODI #11738142 · view all complaints for this vehicle at nhtsa.gov

Is 16 complaints a lot? They were filed between 2022 and 2026, roughly 4 a year, which is fewer than the typical model in this dataset. We do not have sales figures for this model, so treat this as a rough volume, not a rate per car on the road. Popular, high-volume models naturally collect more complaints over time.

How does it compare with other years? The 2021 has 16 complaints on file, fewer than the 2020 (25). Of the 11 model years of the Audi A6 we cover, the 2019 has the most (114). Older model years have had longer to collect complaints.