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2003 Audi S6 problems

The most common problem on the 2003 Audi S6 is fuel and propulsion system. It has fewer complaints than a typical S6 model year.

Typical yearClose to a typical year
Owner complaints
2
Recalls
2
Service bulletins
89
Worst area
Fuel system
Fuel economy
15mpg

The worst 2003 Audi S6 problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

  • Fuel system
    2

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Fuel system
    2

Recalls 2

Fuel system, other: storage: tank assemblyReported May 3, 2011 · 5,992 vehicles affected
What is wrong
Volkswagen 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 manufactured from june 19, 2001, through june 8, 2004. The aging of the plastic material in the fuel tank rollover valve combined with bending stress from the aluminum ventilation line to the rollover valve nipple may lead to cracking of the nipple. If this happens, a fuel leak may result.
Risk
A fuel leak in the presence of an ignition source could lead to a vehicle fire.
Remedy
Dealers will reinforce the nipple on the rollover valve to prevent leakage or repair the cracking at the nipple. The recall is expected to begin during june 2011. Owners may contact audi at 1‑800‑822‑2834.

Recall number 11V267000 · Recall details

Electrical systemReported March 18, 2004 · 172,866 vehicles affected
What is wrong
On certain passenger vehicles, if a driver's knees push against the knee bolster (crash element) located under the dashboard, it can contact the headlight switch wiring harness, and an electrical short could occur.
Risk
A fire could originate in the left dashboard area.
Remedy
Dealers will install a protective covering on the knee bolster (crash element). In addition, the wiring harness as well as the felt protector on the left side of the dashboard carrier will be checked, and replaced if necessary. The recall began on july 26, 2004. Owners should contact audi at 1‑800‑822‑2834.

Recall number 04V133000 · Recall details

See all 2 recalls for the 2003 Audi S6

Technical service bulletins for the 2003 Audi S6 89

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 89 bulletins for the 2003 Audi S6

2003 Audi S6 fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
4.2L 8‑cyl4WD131915

What 2003 Audi S6 owners say

Most recent owner complaints, unedited.

Filed Aug 4, 2026 · Fuel system · 176,000 miles · CA

The contact owns a 2003 Audi S6. The contact stated that while refueling the vehicle in the driveway, gasoline was leaking from the vehicle. The vehicle was then repaired under the federal safety agency Campaign Number: 11V267000 (Fuel System, Other); however, the failure persisted. The dealer was contacted, and the vehicle was diagnosed with fuel tank failure. The contact was informed that the part was discontinued. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 176,000.

Filed Sep 1, 2021 · Fuel system · WI

Pursuant to outstanding recall repair: Fuel tank leaks substantially when filled over 1/2 tank. Zimbrick Audi of Madison, WI confirms symptom, and confirms that fuel tank needs to be replaced pursuant to faulty rollover valve nipple. Audi of America is not currently offering a resolution as they claim replacement fuel tank is no longer available. The car has been unavailable to me for over a week. There is no resolution in sight.

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Questions about the 2003 Audi S6

Is the 2003 Audi S6 reliable?

Owners have filed 2 complaints about the 2003 Audi S6, fewer than a typical S6 model year.

What is the most common problem with the 2003 Audi S6?

Fuel and propulsion system, with 2 complaints.

How many recalls does the 2003 Audi S6 have?

2 recalls, covering fuel system, other and electrical system.

What gas mileage does the 2003 Audi S6 get?

Official estimates for the 2003 Audi S6 range from 15 mpg combined. The most efficient version (4.2L 8-cyl, 4WD) gets 13 city and 19 highway.

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