AUDI S6 Reliability by YearBest & worst years, problems & recalls — NHTSA data

DRIVING ON THE NEW JERSEY TURNPIKE AND BOTH TURBOCHARGERS FAILED. CAR LOST POWER AND I HAD TO STEER TO SIDE OF THE HIGHWAY WITHOUT POWER STEERING AND BRAKES FROM FAR LEFT LANE. AUDI SERVICE SAYS BEARINGS STARVED OF OIL AND SEIZED. THEY SAID THIS IS A COMMON PROBLEM WITH THE 4.0 TWIN TURBO AUDI ENGINES AND THAT THE OIL FEED LINE GETS BLOCKED AND STARVES THE TURBOCHARGERS OF OIL, RESULTING IN BEARING FAILURE. REPAIR COST IS $9,000. CAR HAS LESS THAN 70,000 MILES. AUDI HAS A TECHNICAL SERVICE BULLETIN ON FILE WITH THE NHTSA THAT SPECIFICALLY ADDRESSES THIS KNOWN PROBLEM. AUDI NORTH AMERICA WILL NOT ASSIST WITH COST OF REPAIRS.

First off let me start by saying the vehicle has 45k miles on it. There were no fault codes or system errors prior to the issue that developed. I was driving to a meeting in heavy rain, no issues or suspicion of issues arising. I parked the car, returned about 2 hours later started the car to find 6 warnings on the dash (tpms fault, acc disabled, steering disabled, air ride control disabled esc disabled and a few more. Notably was the steering, it had a red light and the steering wheel was very hard to turn. The vehicle couldnt be driven. After having the computer scanned the issue was the electronic steering rack. See codes below. This is very unfortunate and strange that it came out of nowhere especially to fail this way. The vehicle is available for inspection until the part is replaced. VIN: [XXX] License Plate: Mileage: 73992km-45976mi Repair Order: Address 44: Steering Assist Labels: 4G0-909-144.clb Control Module Part Number: 4G0 909 144 T HW: 4G0 909 144 Q Component and/or Version: RCevo H55 0202 Software Coding: 101001010001 Work Shop Code: WSC 02391 785 00200 ASAM Dataset: EV_RCEPS 106007 (AU57) ROD: EV_RCEPS_106.rod VCID: 3A381898BDFF7D41CD-806E 4 Faults Found: 6291727 - Internal Control Module Memory Check Sum Error B2000 00 [10001001] - - [Abschaltpfadtest fehlgeschlagen] MIL ON - Confirmed - Tested Since Memory Clear Freeze Frame: Fault Priority: 1 Fault Frequency: 1 Mileage: 73949 km Date: 2023.12.06 Time: 10:07:29 Write only channel 1052420 - Internal Control Module Memory Check Sum Error B2000 49 [10001001] - Internal Electronic Failure [Unplausibler Signalverlauf des Motortemperatursensors] MIL ON - Confirmed - Test INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I OWN A 2018 AUDI S6 WHICH I BEGAN DRIVING IN MARCH 2018. SINCE THEN THE WINDSHIELD HAS SHATTERED THREE TIMES, DUE TO ONLY MINOR IMPACTS OF ROCKS OR ROAD DEBRIS EACH TIME. THIS HAPPENED MOST RECENTLY A FEW WEEKS AGO WHILE DRIVING ON THE HIGHWAY AT ABOUT 70 MPH. I HAVE BEEN DRIVING FOR 36 YEARS IN SEVEN DIFFERENT AUTOMOBILES AND I HAVE NEVER HAD TO HAVE A WINDSHIELD REPLACED. I ALSO DO MUCH LESS HIGHWAY DRIVING THAN I HAVE IN THE PAST. THE FACT THAT THE WINDSHIELD ON MY AUDI HAS SHATTERED THREE TIMES IN THREE YEARS CANNOT POSSIBLY BE JUST BAD LUCK. FORTUNATELY, EACH TIME THE WINDSHIELD SHATTERED IT WAS NOT IN THE DRIVER'S LINE OF SIGHT. IF THE WINDSHIELD HAD SHATTERED DIRECTLY IN FRONT OF THE DRIVER IT COULD HAVE CAUSED LOSS OF CONTROL OF THE VEHICLE. I FEEL THAT THIS IS A SIGNIFICANT SAFETY ISSUE AS THE WINDSHIELD ON THIS PARTICULAR AUDI MODEL SEEMS TO BE QUITE FRAGILE. I HAD PREVIOUSLY DRIVEN A 2009 AUDI A5 FOR NINE YEARS WITH NO SUCH ISSUES. I HAVE CONTACTED AUDI OF AMERICA WITH MY CONCERNS, BUT THEY DO NOT SEEM INTERESTED.

EXCESSIVE BRAKE DUST ON WHEELS AND ROTORS AFFECTING STOPPING DISTANCE

I PURCHASED THE VEHICLE ON 11/18/2017; ON 11/21/2017 A DEAD BATTERY CAUSED THE VEHICLE NOT TO START. ON THE 11/22/2017 AFTER CHARGING THE VEHICLE BATTERY OVER 20 HOURS THE VEHICLE STARTED; HOWEVER THE VEHICLE DISPLAYED SEVERAL WARNINGS: STEERING SYSTEM FAULT, DYNAMIC STABILITY, ADAPTIVE SUSPENSION, ADAPTIVE LIGHTS, ETC... THE VEHICLE WAS DELIVERED TO AUDI SERVICE DEPARTMENT AND IT WAS DETERMINED THAT THE STEERING ANGLE SENSOR WAS MALFUNCTIONING; WHICH IS DIRECTLY LINKED TO STEERING SYSTEM FAULT. THE VEHICLE WAS DELIVERED TO ME BY A MEMBER OF THE SALES TEAM ON 11/30/2017 STATING THE VEHICLE WAS REPAIRED AND CLEAR OF ANY ISSUES. HOWEVER, THE STEERING SYSTEM FAULT RETURNED WITHIN HOURS AFTER THE DELIVERY WHILE DRIVING WESTBOUND ON I-565 AND THE ACTIVE LANE ASSISTANCE ENGAGED MAKING IT DIFFICULT TO STEER THE VEHICLE. I WAS ABLE TO DISENGAGE THE ACTIVE LANE ASSISTANCE, HOWEVER THE VEHICLE STEERING BECAME INCREASINGLY MORE DIFFICULT TO STEER. AFTER PICKING UP MY CHILDREN FORM SCHOOL, THE VEHICLE STEERING WHEEL NEARLY SEIZED UP MAKING IT ALMOST IMPOSSIBLE TO STEER THE VEHICLE SAFELY. I HAD TO VERY AGGRESSIVELY MUSCLE THE STEERING WHEEL IN HOPES OF CONTROLLING THE VEHICLE TO MANEUVER THE CAR WITHOUT ANYTHING OR BEING HIT. I HAD NO REAL CONTROL OVER THE VEHICLE. MY CHILDREN AND I WERE VERY FORTUNATE; BLESSED EVEN THAT WE WERE ARE STILL ALIVE TO TALK ABOUT THIS INCIDENT.

I took the vehicle to west Covina Audi to get the recall repaired. Inv # 793279. They claimed the recall was repaired. I request photos of the work performed and old parts. I was told that since it was a recall they have to ship the parts to Audi. When i was notified that my car was done. I asked for pictures. they send me pictures of another car. I checked all the hose clamps and markings from the factory. they are all untouched. Its a extensive repair and that was done in 15 minutes. Audi is commiting recall fraud.

I'm NOT sure if this would have developed to an safety issue, I'll let your team decide. At my scheduled 50,000 mile dealer service (50,219 miles) I was informed that both motor mounts had failed and needed replacement. The service rep said that THEY found a fault code for one mount and a visual inspection confirmed that the other mount had also failed. Both mounts had sensors but I DID NOT receive a Check Engine Light of any kind. If the situation would have continued, COULD this have become a safety issue? Maybe? I was also concerned about the "No CEL" in that my car was just 2000 mile out of warrantee, could the mount mount have failed during the warranty period and the system was intentionally set up to NOT let me know there was a failure?

TURBO POWER FEELS TO HAVE GRADUALLY DECLINED UPON APPROACHING 50K MILES. IT IS CAUSED BY CLOGGED TURBO OIL SCREENS. $3000+ REPAIR WITH NO HELP FROM AUDI BRAND AND DEALER FOR A WIDELY KNOWN ISSUE. ADDITIONALLY THE O2 SENSORS HAVE RANDOMLY THROW ERROR FOR RUNNING LEAN. REPLACED O2 SENSOR BUT ISSUE CAME BACK. HAVE ALREADY TESTED MAF SENSOR AND VETTED FOR VACUUM, EXHAUST LEAKS. ALSO A KNOWN ISSUE WITH NO HELP FROM AUDI BRAND/DEALER.

AUDI S6 4.0 TT, THE CAR I OWN ARE NOTORIOUS IN OIL SCREEN PROBLEMS. THEY STARVE THE TURBOS WITH NO OIL AND CAUSE FAILURE TO THEM. I AM ONE OF THE PERSON THAT HAS TO DEAL WITH THE ISSUE.

OEM TURBOS FAIL ON AUDI 2013-2017 S6/S7/S8/RS6/RS7 DUE TO OIL STARVATION CAUSED BY CLOGGED OEM OIL STRAINER. THIS IS A SAFETY ISSUE AS THE FAILURE HAPPENS WITHOUT WARNING AND AS IT GENERALLY HAPPENS WHILE WHILE DRIVING THE SUDDEN LOSS OF POWER COULD LEAD TO A SERIOUS ACCIDENT. THIS ISSUE APPEARS TO BE WIDE-SPREAD BASED ON DISCUSSIONS AVAILABLE ON ONLINE FORUMS. AUDI IS AWARE OF THESE FAILURES AND HAS ISSUED TSB'S THAT IDENTIFY THE TURBO OIL STRAINER AS THE CULPRIT BUT THEY HAVE NOT ISSUED A RECALL. THERE HAVE ALSO BEEN VARIOUS REVISED VERSIONS OF THIS OIL STRAINER OVER TIME, EACH ONE BEING LESS RESTRICTIVE THAN THE PRIOR. $10K+ REPAIR EVERY 30-50K MILES IS UNREASONABLE DUE TO FACT THAT OIL STRAINER HAS BEEN IDENTIFIED TO BE DEFECTIVE AND UPDATED SEVERAL TIMES BY AUDI.

The front passenger-side 6-piston Brembo caliper's (Part No. 20.A989.63) external steel crossover tube failed due to corrosion, specifically where the tubing was covered by a protective rubber sleeve, which trapped moisture and road salt. This led to a catastrophic loss of brake fluid and braking capability. This appears to be a systemic corrosion defect.

Subject: Formal Complaint Regarding Defective Arnott Front Air Strut To Whom It May Concern, I am writing to formally report a significant safety concern regarding a defective Arnott FL front air strut purchased via RockAuto for my 2016 Audi S6 (VIN: [XXX] ). The air strut failed within five days of professional installation. This failure compromised the safety and functionality of my vehicle's suspension system, potentially risking further damage and endangering passengers. I was forced to drive the vehicle briefly in this compromised state to arrange for reinstallation, creating an additional safety hazard. Details of the issue: Product: Arnott FL Front Air Strut (purchased via RockAuto). Professional Installation Dates: October 25, 2024, and reinstallation due to failure on November 27, 2024. Failure Description: The air strut lost functionality within five days of installation, causing a significant drop in vehicle height and inability to maintain proper suspension. This defect demonstrates a failure of Arnott’s quality control and has left me concerned about the safety of their products, particularly when they play a critical role in vehicle performance and passenger safety. I am requesting that NHTSA investigate this matter to ensure no systemic issues with Arnott's products compromise the safety of other drivers. I have attached supporting documentation, including invoices for installation, reinstallation, and further details on the defective part. Thank you for your attention to this urgent safety matter. I look forward to your acknowledgment and any updates regarding this investigation. Sincerely, [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

We, a group of Audi S6 owners with vehicles from the 2013-2017 model years, are experiencing premature mechatronic issues. These problems manifest as jerking when coming to a stop, which can lead to accidents, and intermittent power loss that can be life-threatening. These issues began around 40,000 miles and have progressively worsened, despite our vehicles having only approximately 70,000 miles on them. Given the early onset and severity of these problems, we strongly urge a recall. The current mechatronic design appears to be flawed and fails prematurely, posing significant safety risks.

Hi - The Crankcase Ventilation Valve Extended Warranty [XXX] covers only ten years or 120k miles. My car has close to 160k miles. According to NHTSA or Audi, “Audi has determined that, in some vehicles, it is possible for the crankcase ventilation valve to malfunction, causing a whistling noise in the engine compartment and the MIL to illuminate due to the presence of specific fault codes caused by this component. This condition may impact the vehicle tailpipe emissions, and the presence of a MIL-on condition may cause the vehicle to fail an IM (smog) test.” This is causing the engine to rev on its own, foul odor, consume more oil and gas, MIL-on, and potentially cause the IM (smog) test to fail regardless of years or miles and a safety issue. Please add this matter to recall rather than extended warranty and is likely related to NHTSA Campaign Number: 22V178000 which is causing oil separator and coolant pipe issues that need to be covered. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)