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1998 Audi A6 fuel system problems

35 complaints (27% of all complaints for this car). Typical mileage when it fails: 75,000. 1 crash reported.

owner complaints
35
of this car's complaints
27%
typical mileage
75,000
crashes
1
recalls
3

Which part fails

  • Storage: tank assembly
    15
  • Storage: tank assembly: filler pipe and cap
    4
  • Storage: fuel gauge system
    3
  • Storage
    3
  • Delivery: fuel pump
    2
  • Delivery
    2
  • Storage: tank assembly: mounting
    1
  • Fuel injection system
    1

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Audi A6 fuel system problems in other years

19972000201520202026

Specific symptoms reported on the 1998 Audi A6 fuel system

Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.

Fuel gauge 12

Related recalls

Fuel system, gasoline: storage: tank assemblyReported May 3, 2001 · 70,000 vehicles affected
What is wrong
Vehicle description: passenger vehicles. Sulfur in fuel interacts with certain additives found in widely available gasoline causing sulfur to become deposited on the contact points of three fuel sending units mounted inside the fuel tank. This could cause the fuel gauge to read full while the fuel tank may not in fact be full or could be empty.
Risk
Running out of fuel without warning while the fuel gauge indicates that there is sufficient fuel in the tank lead to safety problems.
Remedy
Dealers will remove the existing fuel level sending units and replace them with fuel level sending units using a new alloy composed of gold, silver, and a small amount of nickel, which will not chemically react with sulfur. Vw/audi will also call back vehicles that were repaired under a previous recall last june in order to install the updated fuel sending units the federal safety agency 00v137/audi lb). Owner notification began may 1, 2001. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact audi at 1‑866‑892‑2834.

Recall number 01V157000 · Recall details

Fuel system, gasoline: storage: tank assembly: filler pipe and capReported March 22, 1999 · 27,964 vehicles affected
What is wrong
Vehicle description: passenger vehicles equipped with quattro drive system which employs a fuel and fuel vapor leak detection system. If the vehicle is refueled shortly after the engine is started, and is kept running while being refueled, the fuel vapor recovery system could produce sufficient back pressure to cause fuel to be ejected after a complete fill-up when the fuel pump nozzle is removed from the filler neck.
Risk
In the presence of an ignition source, fuel spray could result in fire or possible personal injury.
Remedy
Vw is providing a new page for the owner's manual and also requesting owners to make an appointment with their dealers to have a label containing important refueling instructions installed inside of the fuel filler door. Dealers will also remove the tire pressure label and replace it with a new label affixed to the fender well at the right rear door.

Recall number 99V058000 · Recall details

Fuel system, gasoline: storage: tank assembly: filler pipe and capReported September 19, 1997 · 31 vehicles affected
What is wrong
Vehicle description: passenger vehicles. During pre-assembly of the fuel tanks, an incorrect filler neck was installed causing the filler neck to not "match" the fuel cap.
Risk
This condition could allow fuel to escape and if an ignition source was present, a fire could occur.
Remedy
Dealers will replace these filler necks.

Recall number 97V160000 · Recall details

Related investigations

Stuck-open throttleOpened June 30, 2004, closed February 10, 2005

Vwoa has recalled approximately 28,300 my 1998-99 a6 vehicles in cold weather states that experienced the highest rate of throttle icing incidents in the subject vehicles (04v‑495).the failure rate in the a4 and passat vehicles is much lower than in the recalled vehicles.odi will continue to monitor the experience in the a4 and passat vehicles.the closing of this investigation does not constitute a finding by the federal safety agency that no safety-related defect exists for the audi a4 or vw passat vehicles.the agency reserves the right to take further action if warranted by a change in circumstances. For further details see the attached closing report.

EA04017

Stuck-open throttleOpened March 5, 2004, closed June 30, 2004

Complaints received by odi and audi allege that, in extreme cold weather, the throttle may unexpectedly fail to return to idle when the accelerator pedal is released, making it difficult to stop the vehicle.in march of 2004, audi performed a series of tests to investigate the possible causes of throttle icing.audi concluded that under certain driving conditions - only short distance trips over several weeks where coolant temperature remains below 70?c (158?f) - water may accumulate in the motor oil. Water that has accumulated in the motor oil will evaporate after the engine oil temperature exceeds 70?c (158?f) and could, within 15 to 20 minutes of driving at a constant speed with an outside temperature below -20?c (-4of), cause ice to form in the throttle body.according to audi, this condition occurs at relatively low throttle settings and results in throttle sticking at positions that can be controlled by braking.during typical vehicle usage (mixture of short and long distance driving) this phenomenon is not expected to occur.this investigation has been upgraded to an engineering analysis.

PE04023

What 1998 Audi A6 owners say

Most recent owner complaints, unedited.

Filed Sep 15, 2020 · Fuel system · 224,580 miles · IN

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. This recall needs to be expanded to include all a6 vehicles with the defective plastic nipple including the 1998 audi a6 in question.

Filed Feb 25, 2010 · Fuel system · 163,895 miles · IA

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.

Filed May 6, 2007 · Fuel system · NY

I purchased a used 98 audi a6 pn 4/28/07. When I purchased the car, the only issues with the car were this gassy smell inside the car when you turn on the heat, and a smoke coming from the some pipe. My mechanic told me that the breather was cut, and it had to be replaced . After fixing the problem which I had to pay for. The check engine light went on. Could not do the inspection because of that problem. A few days later I started while driving I hear this beeping sound. The fuel needle immediately went down to empty, and back up again showing that I had half a tank of gas. I went to check it again. The mechanic could not see anything. So I decided to make an appointment with the dealer. In the mean time, I decided to fill up my gas tank. That's when I realized a gas smell coming from outside the car. Took the vehicle to another mechanic on my way home, to find out that my gas tank was leaking because there is a crack and I could not drive the car under such conditions because the car can set on fire while I am driving it.

Filed Oct 17, 2005 · Fuel system · 80,500 miles · PA

(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. Carfax vehicle history shows no record of the car being involved in an accident, not have I experienced one since purchasing. (3) licensed repair shop is currently searching for replacement gas tank and determining the approximate labor cost to replace.

Filed Oct 29, 2004 · Acceleration, Fuel system · 72,000 miles · VT

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. I was told that this is some sort of design flaw with this particular model/engine, and that this will happen again in very cold weather. In april I found a short article in "der spiegel" (the german equivalent to newsweek or time magazines), reporting that the federal safety agency took 16 audi a6 in to test for exactly this problem. What is your advice to customers? Can you force audi to do something about it, since this appears to be a major safety issue? Kindest regards and thank you in advance, hagen blaszyk, md

Filed Aug 26, 2004 · Fuel system · 7,000 miles · FL

A recall for the fuel sensor was issued. However, this vehicle was not included due to VIN.

Filed Aug 17, 2004 · Fuel system · OR

Back pressure develops when refueling with the engine and ignition off. Gasoline gushes out onto attendant, car and ground. Obviously, there is a risk of injury or death from fire or explosion. This has happened many times , so that we no longer fill our tank, as its not nearly as bad if we fill it only 3/4 full. It will still spray out, but not gush out. This is a serious problem which audi refuses to acknowledge as a defect, even though lives could be at risk.

Filed Nov 4, 2003 · Fuel system · 28,000 miles · MN

Vehicle ran out of gas - gauge showed 3/4 tank. Vehicle has had the gas gauge recall performed on it.

Filed Sep 12, 2003 · Fuel system · 75,000 miles · TX

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.

Filed Jul 23, 2002 · Fuel system · FL

Consumer states he could smell a strong smell of gasoline in the garage, a mechanic found a fuel leak due to a split in the return line plastic nipple, this allowed fuel to drip on the exhaust pipe when the tank was more than half filled, the whole fuel tank assembly was replaced. *slc

Questions about the 1998 Audi A6 fuel system

Does the 1998 Audi A6 have fuel system problems?

Owners have filed 35 complaints about the fuel system of the 1998 Audi A6, 27% of all its complaints, more than any other problem.

At what mileage do 1998 Audi A6 fuel system problems start?

The typical (median) mileage in owner complaints is 75,000 miles.

Was there a recall on the 1998 Audi A6 fuel system?

Yes, 3 recalls: 01V157000, 99V058000, 97V160000. Check your VIN to see if your car still needs the free repair.

What year does the Audi A6 have the most fuel system problems?

The Audi A6 model years with the most fuel system complaints are 1999 (39 complaints), 1998 (35 complaints) and 2000 (23 complaints).

Other 1998 Audi A6 problems

Brakes 19Acceleration 18Steering 13Suspension 11Body 9Electrical 8Engine 6Visibility 5Airbags 4Lights 4Tires 3Seat belts 2Transmission 2Locks 1

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