FaultScore

Audi S6 fuel system problems

35 of the 193 complaints filed about the Audi S6 are about the fuel system — 18% of everything owners reported. The worst model year for it is 1995.

35

Complaints

18%

Share of all complaints

1

Crashes

1

Fires

Fuel & Propulsion complaints by model year

1995 S6 18 51.4%

Median failure at 108,000 miles

1996 S6 1 2.9%
1997 S6 1 2.9%
2002 S6 4 11.4%

Median failure at 110,342 miles

2003 S6 2 5.7%

Median failure at 176,000 miles

2013 S6 3 8.6%

Median failure at 49,000 miles

2014 S6 3 8.6%

Median failure at 76,000 miles

2015 S6 1 2.9%
2016 S6 1 2.9%
2017 S6 1 2.9%

Median failure at 49,996 miles

What owners said

2003 Audi S6 at 176,000 miles Lake Forest, CA

FUEL SYSTEM, OTHER

The contact owns a 2003 Audi S6. The contact stated that while refueling the vehicle in the driveway, gasoline was leaking from the vehicle. The vehicle was then repaired under NHTSA Campaign Number: 11V267000 (Fuel System, Other); however, the failure persisted. The dealer was contacted, and the vehicle was diagnosed with fuel tank failure. The contact was informed that the part was discontinued. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 176,000.

NHTSA complaint #11754771 — an unverified report by a vehicle owner.

2016 Audi S6 Pennington, NJ

FUEL/PROPULSION SYSTEM

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)

NHTSA complaint #11565497 — an unverified report by a vehicle owner.

2013 Audi S6 Kailua, HI

FUEL/PROPULSION SYSTEM

Recently learned that my car broke down on my spouse in an extremely unsafe location due to turbo failure(s) probably caused by the turbo oil inlet screen. She was on a busy street when the car shut off on her putting her in an extremely unsafe situation to move the car and wait for tow truck service. The car is still with the Audi dealership for repairs but has been confirmed that this is the likely incident and fixing it will likely prevent further issues. This car has only been to Audi certified technicians at dealerships for the entire time I've owned the car and I was never notified that this is a common occurrence in these models with the turbo. Numerous online forums are dedicated to discuss the common occurrence when researching this particular issue going back a few years, mostly astounding a recall hasn't been issued. There was no warning lamp for the issue to warn us of the impending failure.

NHTSA complaint #11447092 — an unverified report by a vehicle owner.

2003 Audi S6 Oregon, WI

FUEL/PROPULSION SYSTEM

Pursuant to outstanding recall repair: Fuel tank leaks substantially when filled over 1/2 tank. Zimbrick Audi of Madison, WI confirms symptom, and confirms that fuel tank needs to be replaced pursuant to faulty rollover valve nipple. Audi of America is not currently offering a resolution as they claim replacement fuel tank is no longer available. The car has been unavailable to me for over a week. There is no resolution in sight.

NHTSA complaint #11431407 — an unverified report by a vehicle owner.

2002 Audi S6 Shaker Heights, OH

FUEL/PROPULSION SYSTEM

Fuel is leaking from the top of the driver side of fuel tank. Appears to be near to rollover nipple that was previously recalled in 2010. Result: accumulation of fuel near exhaust - fire hazard.

NHTSA complaint #11422178 — an unverified report by a vehicle owner.

2015 Audi S6 Burlingame, CA Crash

FUEL/PROPULSION SYSTEM

Multiple turbo failures. Engine shook violently then suddenly stopped in the middle of the road. This same issue happened 3 times affecting both turbos. It may be due to faulty oil filter/strainer. From online research (link below) this is a common problem for C7 Audi s6. https://www.audizine.com/forum/showthread.php/851578-2016-S6-4-0T-Turbo-Failure

NHTSA complaint #11420626 — an unverified report by a vehicle owner.

2017 Audi S6 at 49,996 miles Apple Valley, MN

FUEL/PROPULSION SYSTEM

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.

NHTSA complaint #11413599 — an unverified report by a vehicle owner.

2013 Audi S6 at 53,000 miles Cranbury, NJ

FUEL/PROPULSION SYSTEM

WITH ONLY 53,000 MILES ON MY 2013 AUDI S6 BOTH TURBO CHARGES FAILED AND AUDI IS NOW CHARGING ME $9,000 TO REPLACE BOTH TURBO CHARGES WHICH ARE SUPPOSED TO LAST 100,000 TO 125,000 MILES. THIS ISSUE OCCURED WHILE ON THE ROAD IDLING AT A LIGHT AND CAUSED THE CAR NOT TO BE ABLE TO START AND TO SHAKE THE VEHICLE VIOLENTLY.

NHTSA complaint #11407450 — an unverified report by a vehicle owner.

2014 Audi S6 at 125,000 miles Jacksonville, NC

FUEL/PROPULSION SYSTEM

MY TURBO CHARGERS BLEW DUE TO OIL STARVATION WHILE DRIVING ABOUT 45MPH IN THE CITY WHILE DRIVING STRAIGHT.

NHTSA complaint #11406291 — an unverified report by a vehicle owner.

2014 Audi S6 at 76,000 miles Powder Springs, GA

FUEL/PROPULSION SYSTEM

SUSPENSION WAS REPLACED AT 40,000 MILES DO TO NORMAL WEAR AND TEAR. THAT WAS AUDI EXCUSE. SUSPENSION WAS REPLACED AGAIN AT 63,000 MILES. ENGINE MOUNTS AND TRANSMISSION MOUNTS WERE REPLACED AT 63,000. NOW AT 75,000 MILES, ENGINE CAMSHAFT HAS FAILED AND ALMOST CAUSED ME TO LOSE CONTROL OF THE CAR. OIL IS CHANGED EVERY 3K MILES AND ALL MAINTENANCE IS UP TO DATE AND ALWAYS DONE ON TIME OR BEFORE REQUIRED. CAR ALWAYS SMELL LIKE GAS. INSPECTION FOUND NO ISSUES. AT THIS POINT, I AM CONCERNED WITH THE SAFETY OF MYSELF AND MY FAMILY BECAUSE THIS CAR IS A DAILY DRIVER. I HAVE CONTACTED AUDI OF USA FOR ASSISTANCE. BUT AUDI IS UNRESPONSIVE. I HAVE ALL SERVICE RECORDS BUT UNABLE TO UPLOAD DUE TO FILE SIZE RESTRICTIONS.

NHTSA complaint #11354290 — an unverified report by a vehicle owner.

2014 Audi S6 at 62,000 miles Evans, CO 1 injured

FUEL/PROPULSION SYSTEM

TURBO FAILURE - CAR STALLED WHILE SLOWING ON A MAJOR INTERSTATE, CAUSING MULTIPLE NEAR-COLLISIONS. AUDI IS AWARE OF THE ISSUE AND THE DANGERS OF THE FAILURE, BUT HAS NOT ISSUED A RECALL, EVEN THOUGH THEY HAVE ISSUED MULTIPLE TECHNICAL SERVICE BULLETINS REGARDING THE ISSUE AND ADMITTING TO FAULTY PARTS CAUSING THE FAILURE. IT IS ONLY A MATTER OF TIME BEFORE SOMEONE IS INJURED OR WORSE DUE TO LOSING CONTROL OF THE VEHICLES ACCELERATION AND USE OF ENGINE.

NHTSA complaint #11222281 — an unverified report by a vehicle owner.

2013 Audi S6 at 45,000 miles Pfugerville, TX

FUEL/PROPULSION SYSTEM

OEM TURBOS FAIL DUE TO OIL STARVATION , CAUSED BY OEM OIL STRAINER AND PVC VALVE ( SEVERAL REVISIONS HAVE BEEN MADE SINCE CARS WAS PRODUCED ) ALSO NUMEROUS OTHERS HAVE HAD THE SAME ISSUES

NHTSA complaint #11194503 — an unverified report by a vehicle owner.

2002 Audi S6 at 110,342 miles Lumberton, NJ

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

ON 10 AUG 2010 MY 2002 AUDI S6 AVANT FUEL TANK ROLLOVER VALVE HOSE NIPPLE BEGAN LEAKING FUEL VAPORS AND LIQUID. THE LEAK WHICH IS CAUSED BY THE SAME MATERIAL FAILURE NOTED IN NHTSA CAMPAIGN # 08V157000 AND IS A SERIOUS SAFETY RISK BECAUSE OF FUEL AND FUEL VAPOR EXPOSURE TO HOT EXHAUST AND OTHER POSSIBLE IGNITION SOURCES. IN THIS CASE THE PLASTIC HOSE NIPPLE CRACKED WITHOUT ANY TYPE OF IMPACT, DAMAGE OR THE PRESENCE OF HARSH CONDITIONS. THE VALVE IS LOCATED ON THE DRIVER'S SIDE OF THE TANK A FEW INCHES FROM THE FUEL SENDER ACCESS HOLE UNDER THE REAR SEAT. THE P/N FOR THE ENTIRE FUEL TANK FOR THE A6 AND ALLROADS AFFECTED BY 08V157000 IS [XXX] BL. THE P/N FOR THE ENTIRE FUEL TANK IN THE S6 AND A6S W/ 4.2 V8S *NOT YET RECALLED* IS [XXX]. THE DESIGN OF THE TANKS IS NEARLY IDENTICAL, BUT THE 075 BL IS THREE GALLONS SMALLER. WHILE THE FUEL TANK P/NS ARE DIFFERENT THE PLASTIC ROLLOVER VALVE WHICH IS BONDED TO THE FUEL TANK ASSEMBLY IS COMMON TO BOTH P/NS AND IS UNAVAILABLE AS A REPLACEABLE COMPONENT. ALTHOUGH THE FUEL LINE ATTACHED TO THE VALVE IS OF A DIFFERENT MATERIAL, SIMILAR FORCES ACT UPON THE HOSE NIPPLE LEADING TO THE CRACKING ON THE 4.2S LARGER YET OTHERWISE SIMILAR TANK. THE DEFECTIVE FUEL TANK ON MY VEHICLE IS STILL INSTALLED AND THE CAR IS NOT DRIVABLE DUE TO THE SERIOUS SAFETY HAZARD. AN INSPECTION THROUGH THE FUEL SENDER ACCESS PANEL UNDER THE REAR SEAT REVEALED THAT THE PLASTIC ROLLOVER VALVE WAS THE SOURCE OF THE FUEL LEAK STREAMING DOWN THE TANK BESIDE THE EXHAUST AND POOLING BELOW CAR. NOTE: I PERSONALLY KNOW OF AT LEAST ONE OTHER INSTANCE WHERE A 2002 A6 W/ 4.2 V8 BEGAN LEAKING FUEL FROM THE SAME ROLLOVER VALVE HOSE NIPPLE AND THESE VEHICLES EQUIPPED WITH THE 4.2 HAVE NOT YET BEEN IDENTIFIED BY A NHTSA CAMPAIGN OR MANUFACTURER RECALL. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA complaint #10351332 — an unverified report by a vehicle owner.

2002 Audi S6 at 110,342 miles Lumberton, NJ

FUEL SYSTEM, GASOLINE

ON 10 AUG 2010 MY 2002 AUDI S6 AVANT FUEL TANK ROLLOVER VALVE HOSE NIPPLE BEGAN LEAKING FUEL VAPORS AND LIQUID. THE LEAK WHICH IS CAUSED BY THE SAME MATERIAL FAILURE NOTED IN NHTSA CAMPAIGN # 08V157000 AND IS A SERIOUS SAFETY RISK BECAUSE OF FUEL AND FUEL VAPOR EXPOSURE TO HOT EXHAUST AND OTHER POSSIBLE IGNITION SOURCES. IN THIS CASE THE PLASTIC HOSE NIPPLE CRACKED WITHOUT ANY TYPE OF IMPACT, DAMAGE OR THE PRESENCE OF HARSH CONDITIONS. THE VALVE IS LOCATED ON THE DRIVER'S SIDE OF THE TANK A FEW INCHES FROM THE FUEL SENDER ACCESS HOLE UNDER THE REAR SEAT. THE P/N FOR THE ENTIRE FUEL TANK FOR THE A6 AND ALLROADS AFFECTED BY 08V157000 IS [XXX] BL. THE P/N FOR THE ENTIRE FUEL TANK IN THE S6 AND A6S W/ 4.2 V8S *NOT YET RECALLED* IS [XXX]. THE DESIGN OF THE TANKS IS NEARLY IDENTICAL, BUT THE 075 BL IS THREE GALLONS SMALLER. WHILE THE FUEL TANK P/NS ARE DIFFERENT THE PLASTIC ROLLOVER VALVE WHICH IS BONDED TO THE FUEL TANK ASSEMBLY IS COMMON TO BOTH P/NS AND IS UNAVAILABLE AS A REPLACEABLE COMPONENT. ALTHOUGH THE FUEL LINE ATTACHED TO THE VALVE IS OF A DIFFERENT MATERIAL, SIMILAR FORCES ACT UPON THE HOSE NIPPLE LEADING TO THE CRACKING ON THE 4.2S LARGER YET OTHERWISE SIMILAR TANK. THE DEFECTIVE FUEL TANK ON MY VEHICLE IS STILL INSTALLED AND THE CAR IS NOT DRIVABLE DUE TO THE SERIOUS SAFETY HAZARD. AN INSPECTION THROUGH THE FUEL SENDER ACCESS PANEL UNDER THE REAR SEAT REVEALED THAT THE PLASTIC ROLLOVER VALVE WAS THE SOURCE OF THE FUEL LEAK STREAMING DOWN THE TANK BESIDE THE EXHAUST AND POOLING BELOW CAR. NOTE: I PERSONALLY KNOW OF AT LEAST ONE OTHER INSTANCE WHERE A 2002 A6 W/ 4.2 V8 BEGAN LEAKING FUEL FROM THE SAME ROLLOVER VALVE HOSE NIPPLE AND THESE VEHICLES EQUIPPED WITH THE 4.2 HAVE NOT YET BEEN IDENTIFIED BY A NHTSA CAMPAIGN OR MANUFACTURER RECALL. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

NHTSA complaint #10351332 — an unverified report by a vehicle owner.

2002 Audi S6 at 59,000 miles Irvine, CA

FUEL SYSTEM, GASOLINE

FUEL LEAKING FROM THE GAS STORAGE UNIT.

NHTSA complaint #10289861 — an unverified report by a vehicle owner.

1995 Audi S6 at 108,000 miles Fitchburg, MA

FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

THE METAL FUEL LINES UNDER CAR CORRODE DUE TO DESIGN OF RETAINING CLAMPS. THIS HAS CAUSED LEAKS IN THE FUEL LINE. THE CAR HAS HAD A FUEL LINE RECALL PERFORMED ALREADY BUT, IT WAS AT A DIFFERENT SECTION. THIS RUSTED SECTION IS NOT COVERED.

NHTSA complaint #10000342 — an unverified report by a vehicle owner.

1995 Audi S6 Harrisburg, PA

FUEL SYSTEM, GASOLINE:DELIVERY

THE DEALER HAS NOT RECEIVED AUTHORIZATION TO COMPLY WITH CAMPAIGN # 00V068000. THE PARTS HAVE BEEN ON BACK ORDER FOR AT LEAST 3 WEEKS. CAMPAIGN # KY IS NOT IN THE DEALERS COMPUTER SYSTEM. I HAVE BEEN TRYING TO HAVE THIS FUEL LINE REPAIRED SINCE 3/2000. THIS LINE IS FUEL LINE IS UNDER HIGH PRESSURE AND COULD COULD SPRAY ON A HOT TURBO CAUSING AN ENGINE COMPARTMENT FIRE. I HAVE NOT RECIEVED ANY COOPERATION FROM VW OF AMERICA IN GETTING THIS LINE REPLACED. VOA CUSTOMER SERVICE REPS DENY KNOWLEGE OF THIS RECALL.

NHTSA complaint #737979 — an unverified report by a vehicle owner.

1995 Audi S6 Inverness, IL

FUEL SYSTEM, GASOLINE:DELIVERY

CONSUMER IS HAVING SAME PROBLEM AS STATED IN RECALL 00V068000 CONCERNING FUEL LINES, AND VEHICLE WAS NOT INCLUDED IN RECALL.

NHTSA complaint #876207 — an unverified report by a vehicle owner.

1996 Audi S6 Milwaulkie, WI

FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS

FUEL LINES HAVE BEEN LEAKING AND SPILLING GAS INTO ENGINE COMPARTMENT. DEALER HAS NOT SEEN VEHICLE.

NHTSA complaint #875974 — an unverified report by a vehicle owner.

1995 Audi S6 Beverly, WV

FUEL SYSTEM, GASOLINE:DELIVERY

ON THIS DATE, 09-07-00, AT APPROXIMATELY 0730 HOURS, TEMP IN MID 40'S, MY WIFE STARTED OUR VEHICLE AND DETECTED THE ODOR OF GASOLINE AND SHUT OFF THE MOTOR. A CHECK UNDER THE HOOD INDICATED A LEAKING METAL BRAIDED FUEL LINE LOCATED ON THE FRONT PASSENGER SIDE OF THE ENGINE COMPARTMENT NEAR THE EXHAUST MANIFOLD/TURBO-CHARGER. WE CONTACTED AUDI OF AMERICA AT THEIR 1-800 NUMBER AND INQUIRED AS TO WHAT COURSE OF ACTION WE SHOULD TAKE. THE MALE REPRESENTATIVE WE SPOKE TO WAS NOT AWARE OF ANY RECALL ON THIS DEFECTIVE PART, HOWEVER, HE DID PROVIDE US WITH A REFERENCE # AND ADVISED US TO CONTACT A LOCAL AUDI DEALER. WE CONTACTED STAR MOTOR CO., A VOLKSWAGEN/AUDI DEALERSHIP, LOCATED IN CLARKSBURG, WV. THE SERVICE MANAGER ADVISED THAT PLANS WERE BEING MADE FOR RECALL BUT, OWNER NOTIFICATIONS HAD NOT BEEN SENT. WE SCHEDULED AN APPOINTMENT FOR THIS SAME DATE AND CONTACTED A LOCAL TOWING SERVICE TO TOW OUR VEHICLE TO STAR MOTOR CO., WHICH IS LOCATED APPROXIMATELY 65 MILES FROM OUR RESIDENCE. AT THIS TIME, IT IS UNDETERMINED IF AUDI IS GOING TO COVER THE COST OF THE REPAIR & TOW. NHTSA CAMPAIGN ID # 00V068000 THANK YOU.

NHTSA complaint #730695 — an unverified report by a vehicle owner.

Other Audi S6 problems