2004 Audi A6 problems, complaints & recalls
Most-reported problem areas: Fuel System, Gasoline (4) · Wheels:rim (3) · Fuel/Propulsion System (3)
🧭 Reliability snapshot
Compared against other Audi A6 model years — complaint volume vs the model's median year, recalls and severity. How we score →
🛣️ Complaints by mileage
27 NHTSA complaints that reported an odometer reading.
Safety recalls (1)
Fuel System, Other:storage:tank Assembly 2011-05-03 · campaign 11V267000 · 5,992 vehicles
Defect: 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.
Fix: 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.
Service bulletins (151)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Equipment:other:owners/Service/Other Manual 2023-10-04 · A0023742052680_4 · Service Bulletin/Repair Instructions
this bulletin provides information on the additional reporting requirements for safety related inquiries.
Equipment 2022-06-15 · SM 48-2022 · Service Bulletin/Repair Instructions
this special notice is to inform dealers to return the parts listed if it meets the criteria provided.
Structure 2021-06-25 · A0021482021205_6 · Service Bulletin/Repair Instructions
this informational bulletin explains how to order replacement vin plates, safety certification labels, etc.
Suspension 2021-04-21 · A4021242016453_4 · Service Bulletin/Repair Instructions
this bulletin contains instructions for determining if bushings need to be replaced.
Equipment:electrical 2020-04-16 · A0020362002047_1 · Service Bulletin/Repair Instructions
this information bulletin contains instructions for technicans on how to ensure their tac call goes smoothly.
Exterior Lighting 2019-12-06 · A9419182012749_1 · Service Bulletin/Repair Instructions
exterior lights, moisture accumulation 2013-2021 a3 cabriolet, 2016-2018 sportback, 2004-2005 a4 cabriolet, 2004-2008 s4 cabriolet, 2008 rs4 cabriolet, 2010-2021 a4 allroad, 2018-2021 a5 sportback, 2010-2012, 2018-2021 rs5 cabriolet, 2018-2021 s5 sportback, 2004-2006 a7, 2004-2011 s7, 2021 rs6 avan
Showing the 6 most recent of 151 bulletins. Search all of them free at nhtsa.gov.
What owners report
2023-12-12 · Service Brakes“- abs module has intermittent failures, available for inspection - anti-lock brakes will not work - yes, the problem reoccurs and the module loses power and then errors out - others - vcds - abs lights come on and brake light stays illuminated…”
2018-12-09 · Fuel/Propulsion System · 53,000 mi“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 spec…”
2017-07-25 · Electrical System“aftermarket radio: pioneer electronics avh-4100 nex backup camera fails and distracts driver significantly. i have attached a scan of the complaint to pioneer electronics. the radio likely has software defect that causes very distracting failures when operating the back-up camera. pioneer advertises that this backup camera works as advertised -…”
2016-01-11 · Fuel/Propulsion System“when engine is cold, usually below 0 degrees fuel sprays from injectors. this could ignite on exhaust manifolds causing car fire.…”
2015-06-08 · Engine · 103,000 mi · 🔥 fire“tl* the contact owned a 2004 audi a6. while driving at 20 mph, smoke appeared from the engine compartment and the vehicle caught fire. a police report was filed and there were no injuries reported. the vehicle was destroyed. the vehicle was not included in nhtsa campaign number: 06v198000 (electrical system). the manufacturer was not made aware of …”
2015-02-12 · Service Brakes · 110,000 mi“with the elec stability control being intermittent this is being caused by the abs module going bad/intermittent the brake pedal pressure changes. i have experienced this with my 2002 ram 1500 (4x4) as well. this could be a problem in all cars and trucks. the cost the fix for an audi is around $2500.00 and my ram was $1300.00. *tr…”
2015-01-27 · Fuel/Propulsion System · 146,569 mi“tl*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…”
2014-11-12 · Vehicle Speed Control · 69,201 mi“the first throttle valve malfunction happened on july 2013. cost to repair 1557.95 part cost 878.00 mileage 66784 the second malfunction happened on oct. 14, 2014 to repair 1200.00 part cost 913.00, mileage 69202 what happens here is the engine shuts down. there could have been e major accident if she was rear ended. i called audi to…”
2013-12-10 · Fuel System, Gasoline“significant gas leak caused by broken gas "in tank sending units" housing and seal. gas will leak and fill the inside of the car with fums as well as under the car. replacement required buying a revised design sending units that include all three sending units. the price is high ~$500 and the consequences very dangerous. my car is: 2004 audi a6 […”
2012-05-22 · Electrical System · 94,648 mi · 🔥 fire“tl* the contact owns a 2004 audi a6. the contact stated that while driving 65 mph, that there was a failure in the electric harness under the passenger seat. the contact stated that he noticed a burning odor and then the power failed to move the seat. upon further review, the contact discovered that the carpet under the seat was singed and had melt…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.