2004 Audi A6 Fuel system Problems
- Complaints
- 9about this part
- Share
- 26%of 35 total for the year
- Median mileage
- 90,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the fuel system of the 2004 Audi A6, 26% of the 35 complaints for this model year. Where a mileage was given, the median is 90,000 miles. 2 recall campaigns on record are filed under a similar system.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“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. …”
NHTSA complaint #11157093, filed 2018-12, 53,000 miles“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 complaint #10377739, filed 2011-01, 108,000 miles“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.”
NHTSA complaint #10384828, filed 2011-02, 81,469 miles“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.”
NHTSA complaint #10301772, filed 2010-01, 72,000 miles“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 complaint #10679130, filed 2015-01, 146,569 milesRelated recalls
- 11V267000May 3, 2011Volkswagen is recalling certain model year 2001-2004 audi a6, model year 2002-2003 s6 and model year 2003 rs6 vehicles equipped with 4.2l engines and…Covers: Audi A6 2001–2004, S6 2002–2003, RS6 2003
- 08V157000Apr 8, 2008Volkswagen is recalling 68,240 my 2001-2004 audi a6 quattro vehicles equipped with 2.7l, 2.8l, or 3.0l engines and my 2001-2005 allroad quattro vehicles…Covers: Audi A6 2001–2004, Allroad 2001–2005
Related service bulletins
- 10123656Dec 10, 2015Supersedes Technical Service Bulletin Group 20 number 13-29 dated November 15, 2013. The fuel tank has been removed from the vehicle and must be neutralized before shipment or…
- 10119940Mar 9, 2015Supersedes Technical Service Bulletin Group 01 number 13-09 dated June 21, 2013. The use of contaminated gasoline or gasoline with a low content of deposit control additives may…
- 10228314Jun 21, 2013The use of contaminated gasoline or gasoline with a low content of deposit control additives may result in one or more conditions.
- 10224993Jun 21, 2013The use of contaminated gasoline or gasoline with a low content of deposit control additives may result in one or more conditions.
- 10221966Jun 21, 2013The use of contaminated gasoline or gasoline with a low content of deposit control additives may result in one or more conditions.
- 10123591Jun 21, 2013Supersedes Technical Service Bulletin Group 00 number 10-01 dated February 5, 2010. Excessive accumulation of deposits on intake valves, intake manifold, fuel injectors and…
- 10015098Apr 12, 2005Fuel injectors, unnecessary replacement. Update.
- 10012766Feb 15, 2005Fuel injectors, unnecessary replacement.
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2026 | 2 | 29% |
| 2025 | 1 | 17% |
| 2021 | 1 | 6% |
| 2020 | 1 | 4% |
| 2019 | 2 | 2% |
| 2018 | 4 | 36% |
| 2016 | 9 | 18% |
| 2015 | 2 | 9% |
| 2014 | 8 | 20% |
| 2013 | 8 | 15% |
| 2012 | 11 | 18% |
| 2008 | 3 | 4% |
| 2007 | 2 | 4% |
| 2006 | 1 | 1% |
| 2004 | 9 | 26% |
| 2003 | 21 | 32% |
| 2002 | 15 | 17% |
| 2001 | 19 | 17% |
| 2000 | 23 | 16% |
| 1999 | 39 | 18% |
| 1998 | 35 | 27% |
| 1997 | 1 | 5% |
Other parts of the 2004 Audi A6
4 complaintsAir bags
3 complaintsElectrical system
3 complaintsEngine cooling
3 complaintsSeats
3 complaintsTires
3 complaintsWheels
3 complaintsElectronic stability control
2 complaintsExterior lighting
2 complaintsVehicle speed control
2 complaintsEngine
1 complaintsForward collision avoidance
1 complaints
← All problems reported for the 2004 Audi A6
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology