hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
66,523 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Audi A6 fuel system problems

fuel system problem

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2004 Audi A6 Owner Comments

problem #3

Nov 182018


  • 53,000 miles


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)

- Goodyear, AZ, USA

problem #2

Jan 072016


  • miles
When engine is cold, usually below 0 degrees fuel sprays from injectors. This could ignite on exhaust manifolds causing car fire.

- River Falls, WI, USA

problem #1

Oct 302014


  • 146,569 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.

- Aventura Florida, FL, USA

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