1998 Audi A6 Fuel system Problems
- Complaints
- 35about this part
- Share
- 27%of 130 total for the year
- Median mileage
- 75,000miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 35 complaints about the fuel system of the 1998 Audi A6, 27% of the 130 complaints for this model year. Where a mileage was given, the median is 75,000 miles. 1 of these say a crash was involved, according to the filers. 3 recall campaigns on record are filed under a similar system.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I am experiencing an issue with my vehicle that was recalled by the factory Audi ag but my vehicle was not listed as one of the recalled vehicle. I am afraid of getting stranded due to an improper fuel reading. Please address this accordingly, thank you.”
NHTSA complaint #10314095, filed 2010-02, 163,895 miles“I own a 1998 Audi A6 quattro (2.8 liter engine). Last winter during a cold spell some part in the pcv valve froze suddenly while driving. This caused the throttle to be stuck at about 4,000 RPM and the car turned into a rocket. Fortunately, I could bring the car to a stop and nobody was hurt. It was quite an experience though, especially since the roads were snowy and icy that day. When I brought the car to the Audi dealer I was told that it may take a week because we are swamped with many other Audi A6, all with the same problem. …”
NHTSA complaint #10097980, filed 2004-10, 72,000 miles“Fuel was found leaking from the rollover valve nipple on the fuel tank. This nipple has been known to crack when the metal ventilation line line adds stress to the plastic nipple. Gasoline was found in a puddle on the floor at the left/ rear of the car. Audi has recalled and repaired this defect on later year a6s but Audi of america, inc. Refused to repair the 1998 A6. The gas tank on the 98 A6 is identical to the gas tank on the recalled vehicles. The national highway safety administration has already determined that these fuel tanks present a serious fire hazard and participated in a recall. …”
NHTSA complaint #11355251, filed 2020-09, 224,580 miles“(1) purchased auto 10/7/05. Pick-up in miami. Auto has always been operated in florida climate. Drove car to pennsylvania arriving on 10/9/05. On 10/13/05 detected a strong smell of gasoline immediately after refueling and parking in garage. (this was first time car was refueled in pennsylvania and parked in garage). (2) problem diagnosed as a leak in a seam of the plastic gas tank of the Audi A6. Has caused no injuries as yet. Obvious consequence is foul odor and , more importantly, a hazard to the environment and a potential fire hazard. …”
NHTSA complaint #10139846, filed 2005-10, 80,500 miles“1998 Audi A6 fuel tank started leaking at the seams. The independent mechanic found no damage to the tank. Garage full of gas fumes and fuel was dripping under the car.”
NHTSA complaint #10038807, filed 2003-09, 75,000 milesRelated recalls
- 01V157000May 3, 2001Vehicle description: passenger vehicles. Sulfur in fuel interacts with certain additives found in widely available gasoline causing sulfur to become deposited…Covers: Audi A6 1998–2001, Volkswagen Passat 2000–2001
- 99V058000Mar 22, 1999Vehicle description: passenger vehicles equipped with quattro drive system which employs a fuel and fuel vapor leak detection system. If the vehicle is…Covers: Audi A6 1998–1999
- 97V160000Sep 19, 1997Vehicle description: passenger vehicles. During pre-assembly of the fuel tanks, an incorrect filler neck was installed causing the filler neck to not "match"…Covers: Audi A6 1998
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 1998 Audi A6
19 complaintsVehicle speed control
18 complaintsSteering
13 complaintsSuspension
11 complaintsBody and structure
9 complaintsElectrical system
8 complaintsEngine cooling
6 complaintsVisibility (wipers, defrost, mirrors)
5 complaintsAir bags
4 complaintsOther or unknown
4 complaintsExterior lighting
3 complaintsTires
3 complaints
← All problems reported for the 1998 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