RoadVitals

2015 Audi A6 Problems

Owner-reported complaints filed with NHTSA, grouped by component

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
22
Latest Jul 24, 2026
Components namedHow many of our component categories appear on at least one report for this model year. One report can name several.
9
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
2

What this page shows

Everything below is an owner-reported complaint submitted to NHTSA about the 2015 Audi A6, grouped by the component NHTSA recorded on the report. These are not confirmed defects, and they are not recalls. NHTSA does not verify most reports before publishing them, and a category with more reports in it is not evidence that a part is defective.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

Reports by component

Ranked by how many owner reports name each component category

  • Engine1038.5%
  • Airbags415.4%
  • Electrical311.5%
  • Fuel system27.7%
  • Brakes27.7%
  • Steering27.7%
  • Powertrain (other)13.8%
  • Suspension13.8%
  • Other / unspecified13.8%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Each component in detail

What the reports in each category say, in the owners' own words

Engine

Reports naming the engine itself — including stalling, misfires, oil consumption, cooling and internal engine components.

10
reports

From owner reports, verbatim

The contact owns a 2015 Audi A6. The contact stated that while driving on neighborhood roads at approximately 25 MPH, the coolant warning light was illuminated. The contact proceeded to park on the side of the road and walk to her residence to pick up coolant to refill the coolant tank. The vehicle was then taken to the independent mechanic where it was diagnosed that the coolant tank needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 79,000.

NHTSA ID 11620102 · filed Oct 16, 2024

Coolant sprayed on engine components due to leaking Coolant /Water pump. Coolant level is falling below minimum level - Problem confirmed by the dealer 1. Water pump 2. Coolant sprayed onto engine components - potential fire hazard 3. Confirmed by dealer 4. Unknown 5, Umknown

NHTSA ID 11555740 · filed Nov 17, 2023
All 10 reports naming engine

Airbags

Reports naming the air-bag system — deployment behaviour, inflators, sensors and warning lights.

4
reports

From owner reports, verbatim

The contact's sister owns a 2015 Audi A6. The contact stated that while his sister was driving 35 MPH, the vehicle crashed into the rear of a Toyota 4Runner. The driver sustained injuries to the chest and neck and had back pain. Medical attention was not provided. The front bumper and frame, and hood were damaged. The air bags failed to deploy. The vehicle was towed to a tow lot. There was no Police report filed. The drivers exchanged information. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 129,000.

NHTSA ID 11752697 · filed Jul 24, 2026

I'M EXTREMELY FRUSTRATED AND DISAPPOINTED IN OUR CHECK AND BALANCES WITH AUDI AND THESE SAFETY RECALLS. I OWN A 2015 AUDI A6, BACK IN JUNE I FOUND THAT THERE ARE TWO SAFETY RECALLS WITH THE FRONT AIRBAGS THAT HAVE KILLED 20 AND INJURED OVER 100 PEOPLE. I'VE DONE A LOT OF RESEARCH. THE AIRBAGS ARE MORE LIKELY TO EXPLODE IN HOT STATES AND I'M LOCATED IN SOCAL, PARTICULARLY THE VALLEY, WHICH IS THE HOTTEST PART OF LA, REACHING 100 DEGREES + THROUGHOUT THE SUMMER. I'VE TRIED TO RESOLVE THIS WITH AUDI, BUT THE PARTS ARE NOT AVAILABLE AND THEY HAVE NO IDEA WHEN IT WILL BE AVAILABLE; THE HOPE IS OCTOBER, BUT I WAS TOLD AUGUST BEFORE. MY PASSENGER SIDE AIRBAG IS OFTEN DISABLED AUTOMATICALLY WHEN THERE IS A PASSENGER IN MY CAR, THE LIGHT COMES ON AND OFF AT THE WRONG TIMES!!!. YOU CAN IMAGINE HOW ON EDGE I FEEL ABOUT DRIVING AROUND, GOING TO WORK, HAVING MY CHILD, OR FAMILY IN THE CAR... ITS SCARY. NO DEALERSHIP WILL BUY THIS CAR BACK BECAUSE IT CANNOT SALE WITH AN OPEN RECALL, AND OR IT MAKES IT HARDER. ADDITIONALLY, THE CAR WON'T PRIVATELY SALE EITHER BECAUSE THERE IS THIS OPEN SERIOUS RECALL THAT CURRENTLY CANNOT BE FIXED, AS I'VE TRIED. I REQUESTED THAT AUDI GIVE ME THE KELLY BLUE BOOK VALUE OF THE CAR BECAUSE IT IS UNSAFE, THEIR RESPONSE WAS NOT TO HAVE PEOPLE IN THE FRONT SEATS, WHICH DOESN'T MAKE SINCE BECAUSE I HAVE TO DRIVE. ADDITIONALLY, I'M PAYING ALOT OF MONEY, NOT TO USE MY FRONT SEAT? THAT'S 1/4 OF MY CAR. I'M NOT ASKING FOR MUCH, BUT I WANT TO GET OUT OF AN UNSAFE CAR THAT DOESN'T HAVE A DATE FOR REPAIR ANYTIME SOON. I'M MORTIFIED EVERY TIME I DRIVE, READING THE STORIES OF THE PEOPLE WHO'VE DIED BECAUSE THE AIRBAGS MALFUNCTIONED AND OR BLEW UP. CAR MANUFACTURES SHOULD BE HELD ACCOUNTABLE WHEN THEY PUT THE PUBLIC SAFETY AT RISK. THEY SHOULD ALSO HAVE STRICT TIME FRAMES TO REPAIR OR PAY DAMAGES OR AT LEAST OFFER RENTALS. WHAT CAN BE DONE TO RESOLVE THIS FAST?

NHTSA ID 11120016 · filed Aug 15, 2018

Too few reports in this category for a page of its own — they appear in the full complaint list.

Electrical

Reports naming the electrical system — wiring, battery, charging, control modules, infotainment and electrical accessories.

3
reports

From owner reports, verbatim

The car will randomly die without notice and then will not start. There's an EC fault but no other identifiers and the car won't start for quite some time. After sitting for a couple hours or more it will finally start. It happens at a minimum of 1-2 times per month.

NHTSA ID 11447108 · filed Jan 11, 2022

OWNER WAS NOTIFIED OF SAFETY RECALL 19N4 - DISCONNECT ELECTRIC COOLANT PUMP AND HAD THE RECALL SERVICE PERFORMED ON 29 DEC 2018. OWNER WAS INFORMED THAT AN ADDITIONAL SAFETY RECALL (19O2) WILL REPLACE THE COOLANT PUMP WITH A NEW ONE. ON 04 MARCH 2019, WE CALLED AUDI USA AND WERE TOLD THAT THE REPLACEMENT WAS NOT YET AVAILABLE. THE COOLANT PUMP ALSO AIDS IN PROVIDING ADDITIONAL CABIN HEAT WHICH IS IMPORTANT DURING THE WINTER MONTHS FOR THE COMFORT AND SAFETY OF OCCUPANTS IN THE VEHICLE. DUE TO THE PUMP BEING DISCONNECTED, THE CABIN HAS BEEN VERY SLOW TO WARN, INCLUDING THE WINDOW DEFROSTERS. THIS PRESENTS AN EXTREME SAFETY ISSUE ESPECIALLY DURING THE WINTER MONTHS. IT ALSO PRESENTS A POSSIBLE DAMAGE ISSUE SINCE THE AFTER COOLANT PUMP IS USED TO ALLEVIATE HEAT FROM THE TURBOCHARGER. AUDI USA STATED ON 04 MARCH 2019 THAT THE NEW COOLANT PUMPS WILL BE AVAILABLE SOMETIME IN THE FUTURE.

NHTSA ID 11184510 · filed Mar 6, 2019

Too few reports in this category for a page of its own — they appear in the full complaint list.

Fuel system

Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks.

2
reports

From owner reports, verbatim

P2067 engine check code which shows faulty fuel sensor. Audi has recalled other year Audi a6 sedan vehicles with the same issue and this seems to be a safety issue as it can show incorrect fuel gauge and in the event of car out of fuel, engine can stall and can cause accident.

NHTSA ID 11562862 · filed Dec 31, 2023

IM AN ACTIVE DUTY MILITARY SERVICE MEMBER STATIONED OVERSEAS IN SOUTH KOREA. I CURRENTLY OWN A 2015 AUDI A6. I WAS RECENTLY NOTIFIED THAT MY VEHICLE HAD 2 RECALLS PLACED, SPECIFICALLY ON THE ELECTRIC COOLANT PUMP AND ON THE PASSENGER OCCUPANT DETECTION SYSTEM (PODS). I VISITED MY LOCAL AUDI DEALERSHIP IN KOREA AND THE AUDI STAFF SAID THAT THEY CANNOT FIX OR REPAIR THE ISSUE SINCE IT IS A U.S. SPECIFIC RECALL. I CALLED THE U.S. AUDI SERVICE DESK AND THEY ALSO SAID THAT THEY CANNOT HELP WITH THE ISSUE AND TOLD ME TO CHECK WITH NHTSA. I FULLY UNDERSTAND THE LIMITATIONS IN THIS MATTER BUT I DO WANT TO APPEAL THAT THERE ARE SEVERAL MILITARY MEMBERS IN THE SAME SITUATION. AS A SERVICE MEMBER, HUSBAND, AND A FATHER, I AM DEEPLY CONCERNED ABOUT THE SAFETY OF MY CAR. I SINCERELY WANTED TO REACH OUT AND SEE IF THERE IS ANY POSSIBLE WAY TO RESOLVE THIS ISSUE OVERSEAS. YOUR THOUGHTS IN THIS MATTER WILL BE DEEPLY APPRECIATED, THANK YOU VERY MUCH FOR YOUR TIME. *TR

NHTSA ID 11171485 · filed Jan 22, 2019

Too few reports in this category for a page of its own — they appear in the full complaint list.

Brakes

Reports naming service brakes, the antilock braking system, brake hoses, master cylinders or the parking brake.

2
reports

From owner reports, verbatim

THE BRAKES ARE GRABBY AND WITH A GENTLE DEPRESSION OF THE BRAKE PEDAL THE CAR COMES TO A SUDDEN JERKY STOP. USUALLY HAPPENS FROM SLOWING DOWN FROM 10MPH TO 0MPH THE TRANSMISSION JERKS HARD WHEN SPEED DROPS FROM 15MPH THE ENGINE ERRONEOUSLY SHOWS CHECK ENGINE LIGHT DURING NORMAL DRIVING. CYLINDERS SHOW OIL LEAKAGE REPEATEDLY. THIS HAS BECOME A REPEAT ISSUE AND HAVE ASKED THE DEALER / SERVICE CENTER TO REPORT THIS AS A MANUFACTURING ISSUE

NHTSA ID 11384223 · filed Dec 20, 2020

AUDI BRAKE GUARD ACTIVATED SPONTANEOUSLY BECAUSE THE CAR SENSED AN IMPENDING IMPACT WITH A VEHICLE IN FRONT OF ME. HOWEVER, THERE WAS NO VEHICLE IN FRONT OF ME, BUT THE BRAKE GUARD APPLIED STRONG BRAKING ACTION ON AN OPEN ROAD, BRINGING ME TO AN IMMEDIATE STOP. HAD THERE BEEN A CAR BEHIND ME, IT WOULD HAVE LIKELY HIT MY VEHICLE, SINCE I CAME TO A SUDDEN STOP ON AN UNOBSTRUCTED ROADWAY FOR NO REASON. *TR

NHTSA ID 10712887 · filed Apr 25, 2015

Too few reports in this category for a page of its own — they appear in the full complaint list.

Steering

Reports naming the steering system — racks, columns, power-steering assist and steering linkage.

2
reports

From owner reports, verbatim

WHILE DRIVING AT NIGHT THERE WAS A FLASH FLOOD ON A KNOWN FLOOD ROAD. AFTER PROCEEDING THROUGH WHAT WAS MAYBE 6"-12" OF WATER, VEHICLE'S AMBER STEERING DEFECTIVE WARNING LIGHT APPEARED WITH THE NOTIFICATION STATING THAT THE VEHICLE WAS SAFE TO DRIVE. THE NEXT DAY WHILE DRIVING, THE AMBER STEERING DEFECTIVE LIGHT TURNED RED WITH A NOTIFICATION STATING NOT TO DRIVE THE VEHICLE. UPON THIS HAPPENING, THE VEHICLE LOST ALL POWER STEERING, TPMS FAULT, STABILIZATION FAULT, AND ACC BRAKING GUARD FAULT APPEARED. THANKFULLY, I WAS NOT DRIVING TO WORK THAT MORNING AND WAS GOING LESS THAN 30MPH RATHER THAN 70MPH. AUDI SERVICE ADVISOR STATES THAT THERE ISN'T A WAY THAT THIS WAS CAUSED DUE TO WATER DAMAGE. I DISAGREE. I BELIEVE WATER ENTERED THE STEERING MODULE (EVEN THOUGH THIS IS SUPPOSED TO BE A SEALED UNIT) AND CAUSED AN ELECTRICAL SHORT TO THE MODULE. DUE TO THE FACT THAT THE SERVICE ADVISOR RELAYED HIS SUPPOSED FINDINGS TO THE INSURANCE ADJUSTER. I AM CURRENTLY LIABLE FOR THE REPAIRS ON THE VEHICLE.

NHTSA ID 11278672 · filed Nov 7, 2019

EXHIBITS AN ALARMING TENDENCY TO WEAVE FROM SIDE TO SIDE WITHOUT A STEERING INPUT. THIS OCCURS WITHOUT A CHANGE IN STEERING WHEEL POSITION, VEHICLE SPEED, OR CHANGE IN ROAD SURFACE OR PREVAILING WIND DIRECTION. IT IS MORE PRONOUNCED AT HIGHWAY SPEEDS AND WHEN WHEEL IS CENTERED AT 12 O'CLOCK BUT DOES OCCUR AT ALL SPEEDS AND STEERING VECTORS. AUDI DEALERSHIP NOTES THE PROBLEM AND BLAMES THE NEW ELECTRIC STEERING SYSTEM BUT STATES IT IS A "CHARACTERISTIC" OF THE SYSTEM AND IS NOT A DEFECT. I DISAGREE AND FEEL ANY DIRECTION CHANGE IN A VEHICLE WITHOUT A DRIVER INPUT OR A EXPLAINABLE EXTERNAL FACTOR CONSTITUTES A POTENTIAL SAFETY ISSUE.

NHTSA ID 10765794 · filed Sep 20, 2015

Too few reports in this category for a page of its own — they appear in the full complaint list.

Powertrain (other)

Powertrain reports that are not specifically the engine or transmission — driveshafts, axles, transfer cases and differentials.

1
report

From owner reports, verbatim

THE BRAKES ARE GRABBY AND WITH A GENTLE DEPRESSION OF THE BRAKE PEDAL THE CAR COMES TO A SUDDEN JERKY STOP. USUALLY HAPPENS FROM SLOWING DOWN FROM 10MPH TO 0MPH THE TRANSMISSION JERKS HARD WHEN SPEED DROPS FROM 15MPH THE ENGINE ERRONEOUSLY SHOWS CHECK ENGINE LIGHT DURING NORMAL DRIVING. CYLINDERS SHOW OIL LEAKAGE REPEATEDLY. THIS HAS BECOME A REPEAT ISSUE AND HAVE ASKED THE DEALER / SERVICE CENTER TO REPORT THIS AS A MANUFACTURING ISSUE

NHTSA ID 11384223 · filed Dec 20, 2020

Too few reports in this category for a page of its own — they appear in the full complaint list.

Suspension

Reports naming suspension components — springs, struts, shocks, control arms and related hardware.

1
report

From owner reports, verbatim

TL* THE CONTACT OWNS A 2015 AUDI A6. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE MADE AN ABNORMAL NOISE. THE CONTACT STATED THAT THE VEHICLE EXHIBITED THE SAME SYMPTOMS AS LISTED IN TSB: 401548. THE VEHICLE WAS TAKEN TO KANSAS CITY AUDI (10330 MADISON AVE, KANSAS CITY, MO 64114) WHERE IT WAS DIAGNOSED THAT THE WHEEL BEARING NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND INFORMED THE CONTACT THAT THERE WAS NO RECALL ON THE VEHICLE. THE FAILURE MILEAGE WAS APPROXIMATELY 71,000.

NHTSA ID 11104079 · filed Jun 26, 2018

Too few reports in this category for a page of its own — they appear in the full complaint list.

Other / unspecified

Reports whose component NHTSA recorded as unknown, or that do not map to one of the categories above.

1
report

From owner reports, verbatim

I am writing to report a serious and life-threatening safety incident involving my Audi vehicle following recent service performed by an authorized Audi dealer. Vehicle information: Model: Audi (2015) VIN: [XXX] Servicing Dealer: Audi Lafayette IN Date of Service: 2026-01-14 A few days after the service appointment, my wife was driving the vehicle from Lafayette, Indiana to Chicago on the highway at normal speed when the vehicle suddenly became unstable and difficult to control. The car experienced violent shaking and loss of directional control, creating an immediate risk of a high-speed accident. Fortunately, she was able to safely bring the vehicle to a stop on the highway shoulder. The vehicle was then towed back to the same dealership. Preliminary inspection strongly suggests a wheel / tire installation failure, which occurred less than a week after dealer service. This incident placed my wife’s life — and the lives of other motorists — in serious danger. We are extremely concerned that this failure may be the result of improper installation or torque procedures performed during the dealer service. At this time: We have not authorized any repairs or alterations to the vehicle We are preserving the vehicle condition for documentation and investigation We are requesting Audi of America’s immediate involvement Given the severity of this incident, we respectfully request: A formal Audi of America safety investigation Preservation and review of all dealer service records and technician documentation. This was not a minor inconvenience — this was a near-fatal highway safety failure, and we believe it requires urgent attention at the corporate level. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID 11711678 · filed Jan 17, 2026

Too few reports in this category for a page of its own — they appear in the full complaint list.

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.

Elsewhere on this vehicle

Data sources

Data on this page last refreshed .