1999 Audi A6 Fuel system Problems
- Complaints
- 39about this part
- Share
- 18%of 217 total for the year
- Median mileage
- 71,600miles
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA recorded 39 complaints about the fuel system of the 1999 Audi A6, 18% of the 217 complaints for this model year. Where a mileage was given, the median is 71,600 miles. 2 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.
“When filling the gas tank in my 99 Audi A6 quattro pressure builds inside the tank and sprays back at me. This has happened each time I put gas in it full or not. A recall was made but, not for my VIN. I spoke with a Audi rep. And a dealership and they said there's nothing that can be done unless I pay for it. I would but, there is already a recall made for that car just not that VIN. It's a hazard and I've had other problems that I paid for. Please let me know if anything can be done. Thank you for your time!”
NHTSA complaint #10156187, filed 2006-04, 8,800 miles“I have recently experience the exact same sudden acceleration with my Audi A6 quattro. The temperature outdoors was very cold and I was traveling up a hill when the car kept accelerating on its own. While applying pressure to the brakes the car continued to accelerate. Luckily I was able to pull the car off the road and shifted into park. Upon placing the car in park the tachometer red lined. After taking it to the garage the technician determined he could not find anything wrong the automobile. The following week my husband drove the car and experienced the exact same thing. …”
NHTSA complaint #10065360, filed 2004-03, 84,000 miles“On january 19, returning home from a family trip, the throttle on our 1999 A6 stuck open at 65mph. I was trapped in the left lane of a 4 lane highway with no shoulder to pull onto due to heavy snow accumulation. I had stand on the brakes as hard as I could to avoid smashing into the vehicles ahead of me that started to slow down for an upcoming speed zone. I overheated my brakes almost to the point of failure in order to pull into the right lane and make a quick exit where I turned off the key. My brakes smoked and smelled for about 15 minutes in zero temperatures. …”
NHTSA complaint #10003601, filed 2003-01, 116,501 miles“Have had nothing but problems with the Audi A6 since inception. Car started making a horrible noise that sounds like it is coming from engine or transmission. Car cannot pass emissions. Engine smoking fluid is pouring out of front of transmission. The car dealer: nalley Audi in roswell, georgia. The car dealer nalley Audi fraudulently took money from me and never repaired vehicle.”
NHTSA complaint #10469694, filed 2012-08, 127,000 miles“Vehicle fully accelerated on it own, resulting in very high speeds in traffic and on downhill drive. Very difficult to stop vehicle when careening down steep hill toward an intersection. Reportedly can happen in cold weather at any time. Dangerous!!”
NHTSA complaint #10007690, filed 2003-02, 48,000 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
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…
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 1999 Audi A6
39 complaintsElectrical system
37 complaintsVehicle speed control
24 complaintsSteering
19 complaintsEngine cooling
17 complaintsSuspension
15 complaintsTransmission and drivetrain
12 complaintsAir bags
8 complaintsSeats
8 complaintsBody and structure
8 complaintsVisibility (wipers, defrost, mirrors)
8 complaintsExterior lighting
7 complaints
← All problems reported for the 1999 Audi A6
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 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