RoadVitals

2004 Audi A6 Fuel system Problems

Owner-reported complaints naming the fuel system system, filed with NHTSA

Data refreshed

Fuel system reportsComplaints 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.
9
Latest Dec 9, 2018
Share of all reportsThis category as a share of every owner report on file for this model year. One report can name more than one component, so the categories overlap.
26%
of 35 total
Crash or fire reportedReports in this category whose submitter recorded that a crash or a fire occurred. The reporter's own answer on the NHTSA form, not a verified finding.
0
Injuries or deaths reportedTotals the submitters entered on their own reports in this category. Not verified by NHTSA and not a casualty statistic.
0

What this page shows

Reports naming fuel storage or delivery — tanks, pumps, lines, injectors and fuel leaks. Every record below is an owner-reported complaint about the 2004 Audi A6 submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 9 reports on file name it.

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

Owner reports naming fuel system

Shown in the owner’s own words, exactly as filed

Fuel system
Filed Dec 9, 2018

RE: SAFETY RECALL 20L8/JY; 08V157000: FUEL TANK ROLLOVER VALVE MODIFICATION; VIN: (XX); 2004 AUDI A6 3.0L QUATTRO AT5 ATTACHED DOCS: 1. 20L8/JY RECALL NOTICE. 2. 7.14.2008 & 11.18.18 AUDI N. SCOTTSDALE, AZ DEALER INVOICES 3. AUDI A6 GAS TANK DIAGRAM. AUDI CORP EMAIL RESPONSE: "AT THIS TIME WE HAVE IDENTIFIED THAT THE 20L8 REPAIR WAS SPECIFIC TO THE DRIVER'S SIDE OF THE VEHICLE. THE DEALERSHIP IS INDICATING THIS CURRENT RECOMMENDED REPAIR IS SPECIFIC TO THE PASSENGER SIDE OF THE VEHICLE." "SINCE WE ARE SHOWING THE 20L8 COMPLETED IN JULY OF 2008 AND THE ORIGINAL 20L8 REPAIR IS SPECIFIC TO DRIVER'S SIDE ROLLOVER NIPPLE VALVES, ACCORDING TO THE DEALERSHIP THIS CURRENT REPAIR IS UNRELATED TO THE RECALL." "CURRENTLY PER THE NHTSA WEBSITE, THE 20L8 IS NOT SHOWING AS AN OPEN RECALL, SO I WOULD BE UNABLE TO SPEAK TO HOW THEY WOULD REACT TO INFORMATION REGARDING A CLOSED RECALL." 'WE HAVE NO EVIDENCE SUPPORTING AN INCORRECT REPAIR BEING PERFORMED IN JULY OF 2008, SO AT THIS TIME WE WOULD BE UNABLE TO PROVIDE ASSISTANCE TOWARDS THIS REPAIR." CURRENT EMISSIONS CHECK ENGINE LIGHT (NOV 18, 2018) IS DIAGNOSED BY THE AUDI DEALER AS A GAS TANK LEAK. ALSO, THERE IS A STRONG ODOR COMING FROM GAS TANK. DEALER QUOTED TO REPLACE THE ENTIRE TANK (SEE ATTACHED #2). THERE ARE SEVERAL ROLLOVER VALVES ON EACH SIDE OF THE GAS TANK ON THE TOP SIDE (SEE ATTACHED #3 GAS TANK DIAGRAM). RECALL (SEE ATTACHED #1) DOES NOT ADDRESS "DRIVERS SIDE OR PASSENGER SIDE" OF GAS TANK. DEALER CLAIMED THAT BACK IN 2008 THAT THEY DID NOT EVEN LOWER THE GAS TANK FOR THE REPAIR. IN SUMMARY: MY VEHICLE CURRENTLY HAS A GAS TANK LEAK ON TOP OF THE GAS TANK COMING FROM THE ONE OR MORE ROLLOVER VALVE NIPPLES ON TOP OF THE GAS TANK. THE SAFETY RECALL ADDRESSES REPAIRING AND REINFORCING THESE LEAKING ROLLOVER VALVE NIPPLES SO A REPAIR REQUEST SHOULD BE COVERED BY THE RECALL. PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID
11157093
Incident
Nov 18, 2018
Mileage
53,000 mi
Fuel system
Filed Jan 11, 2016

WHEN ENGINE IS COLD, USUALLY BELOW 0 DEGREES FUEL SPRAYS FROM INJECTORS. THIS COULD IGNITE ON EXHAUST MANIFOLDS CAUSING CAR FIRE.

NHTSA ID
10819557
Incident
Jan 7, 2016
Fuel system
Filed Jan 27, 2015

TL*THE CONTACT OWNS A 2004 AUDI A6. THE CONTACT STATED THAT WHILE STARTING THE VEHICLE, A STRONG ODOR OF GASOLINE EMITTED INSIDE AND AROUND THE VEHICLE. THE CONTACT MENTIONED THAT THE CHECK ENGINE LIGHT ILLUMINATED. THE FAILURE RECURRED SEVERAL TIMES. THE VEHICLE WAS TAKEN TO THE DEALER, WHERE IT WAS DIAGNOSED THAT THE FUEL TANK COLLAPSE AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 146,569.

NHTSA ID
10679130
Incident
Oct 30, 2014
Mileage
146,569 mi
Fuel system
Filed Dec 10, 2013

SIGNIFICANT GAS LEAK CAUSED BY BROKEN GAS "IN TANK SENDING UNITS" HOUSING AND SEAL. GAS WILL LEAK AND FILL THE INSIDE OF THE CAR WITH FUMS AS WELL AS UNDER THE CAR. REPLACEMENT REQUIRED BUYING A REVISED DESIGN SENDING UNITS THAT INCLUDE ALL THREE SENDING UNITS. THE PRICE IS HIGH ~$500 AND THE CONSEQUENCES VERY DANGEROUS. MY CAR IS: 2004 AUDI A6 [XXX] 2004 A6Q 2.7T INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR

NHTSA ID
10555455
Incident
Dec 1, 2013
Fuel system
Filed Mar 23, 2011

TL*THE CONTACT OWNS A 2004 AUDI A6. THE CONTACT STATED THAT WHEN REFUELING THE VEHICLE OVER THE THREE QUARTER CAPACITY LEVEL, A SUBSTANTIAL AMOUNT OF FUEL WOULD LEAK UNDERNEATH THE VEHICLE NEAR THE EXHAUST PIPE. THE VEHICLE WAS TAKEN TO AN AUTHORIZED DEALER FOR DIAGNOSTIC TESTING AND STATED THAT THE FUEL TANK ROLLOVER VALVE WAS LEAKING. THE VEHICLE WAS NOT REPAIRED. THE CONTACT EXPRESSED SIGNIFICANT CONCERN OF THE SAFETY RISK INVOLVED. THE FAILURE MILEAGE WAS 90,000. THE VIN WAS UNAVAILABLE.

NHTSA ID
10392604
Incident
Mar 19, 2011
Mileage
90,000 mi
Fuel system
Filed Feb 28, 2011

2004 AUDI A6 SEDAN, 3.0 ENGINE DEVELOPED A SUDDEN LOSS OF POWER JUST BEFORE VEHICLE STALLED WHILE DRIVING ON HIGHWAY AT 65 MPH. VEHICLE WAS TOWED TO REPAIR SHOP WHERE IT WAS DETERMINED THAT THE FUEL PUMP HAD FAILED. *TR

NHTSA ID
10384828
Incident
Feb 20, 2011
Mileage
81,469 mi
Fuel system
Filed Jan 17, 2011

CAR'S ENGINE STOPPED WHILE AT A RED LIGHT. WOULD NOT START AFTER FAILURE. ULTIMATELY, CAUSE WAS DETERMINED TO BE A FAILED FUEL PUMP. I SAW THAT THERE WAS A RECALL ON THE FUEL PUMP FOR 2003 A6 MODELS INCLUDING 3L VEHICLES, BUT NOT FOR 2004 MODELS.]

NHTSA ID
10377739
Incident
Jan 11, 2011
Mileage
108,000 mi
Fuel system
Filed Jan 21, 2010

SUDDEN LOSS OF ENGINE POWER WHILE DRIVING A 2004 AUDI A6 AVANT ON HIGHWAY 280 SOUTH IN NORTHERN CALIFORNIA. THE CAR SUDDENLY LOST ALL ENGINE POWER AND STALLED ON THE HIGHWAY. THE CAR STOPPED BEFORE REACHING THE HIGHWAY CURB. THE HIGHWAY POLICE WHO CAME BY SEEING THE FLASHERS ON THE CAR ASSISTED IS PUSHING THE CAR SAFELY INTO THE HIGHWAY CURB AREA. THE CAR HAD TO BE TOWED TO THE DEALER FOR DIAGNOSTICS AND REPAIRS. THE DEALER IDENTIFIED THAT THE FUEL PUMP HAD FAILED. *TR

NHTSA ID
10301772
Incident
Jan 20, 2010
Mileage
72,000 mi
Fuel system
Filed Nov 2, 2009

TL* THE CONTACT OWNS A 2004 AUDI A6. WHEN DRIVING HE SMELLED A STRONG ODOR OF GASOLINE INSIDE OF THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALERSHIP WHERE THE CONTACT WAS INFORMED THAT THE ROLL OVER VALVE WAS MALFUNCTIONING, AND THAT THE GAS TANK NEEDED TO BE REPLACED. THERE WERE NO PRIOR WARNINGS. THE CURRENT AND FAILURE MILEAGES WERE 119898. UPDATED 11/18/09. *LJ THE CONSUMER STATED THE SMELL PARTICULARLY STRONG AFTER FILLING UP. THE CONSUMER WAS TOLD HIS VINE WAS NOT INCLUDED IN THE RECALL. UPDATED 11/19/09 THE CONSUMER STATED HE BEGAN TO SMELL GASOLINE INSIDE THE VEHICLE, PARTICULARLY AFTER FILLING HOME. HE TOOK THE VEHICLE TO A SERVICE CENTER AND WHEN THE MECHANIC LIFTED VEHICLE TO INSPECT IT, HE FOUND FUEL LEAKING FROM THE TOP OF THE FUEL TANK ON THE LEFT SIDE, WITHIN INCHES OF THE EXHAUST PIPE. UPDATED 06/08/10.*JB

NHTSA ID
10290619
Incident
Oct 7, 2009
Mileage
119,898 mi

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 .