RoadVitals

2004 Audi A6

Recalls, owner-reported complaints, investigations and safety data

Data refreshed

Owner complaintsComplaints are reports submitted to NHTSA by owners and drivers. NHTSA does not verify most reports before publishing them, and a complaint does not establish that a defect exists. Volume is influenced by how many of a vehicle were sold, how long it has been on the road, and how much attention an issue has received.
35
Latest Dec 12, 2023
Safety recallsA safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
4
Latest May 3, 2011
InvestigationsNHTSA opens an investigation to examine whether a safety defect may exist. An open investigation is not a determination that a defect exists, and many investigations close without a recall. Investigations can, however, lead to one.
1
Crash or fire reportedComplaints whose submitter recorded that a crash or a fire occurred. These are the reporter's own answers on the NHTSA form, not verified findings.
3
1 injuries, 0 deaths reported

Overview

Our database contains 35 NHTSA owner-reported complaints for the 2004 Audi A6, most frequently naming the fuel system, driver assistance and engine categories. 4 safety recalls have been issued covering this model year; 1 NHTSA investigation names it; and 151 manufacturer communications are on file.

Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.

What owners report

Complaints grouped by the component NHTSA recorded

  • Fuel system921.4%
  • Driver assistance49.5%
  • Engine49.5%
  • Brakes49.5%
  • Airbags37.1%
  • Other / unspecified37.1%
  • Tires & wheels37.1%
  • Electrical37.1%

Percentages are of component mentions. A single complaint can name more than one component, so these do not sum to the total complaint count.

Safety recalls

4 campaigns cover this model year

View all 4

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
11V267000

FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY

May 3, 2011
5,992 units potentially affected
The 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.
The risk: A FUEL LEAK IN THE PRESENCE OF AN IGNITION SOURCE COULD LEAD TO A VEHICLE FIRE.
The 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.
VOLKSWAGEN OF AMERICA, INCManufacturer number 20L8/JYView on NHTSA.gov
08V157000

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

Apr 8, 2008
68,240 units potentially affected
The defect: VOLKSWAGEN IS RECALLING 68,240 MY 2001-2004 AUDI A6 QUATTRO VEHICLES EQUIPPED WITH 2.7L, 2.8L, OR 3.0L ENGINES AND MY 2001-2005 ALLROAD QUATTRO VEHICLES EQUIPPED WITH 2.7L OR 4.2L ENGINES. 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.
The risk: A FUEL LEAK IN THE PRESENCE OF AN IGNITION SOURCE COULD LEAD TO A VEHICLE FIRE.
The remedy: DEALERS WILL REINFORCE THE NIPPLE ON THE ROLLOVER VALVE TO PREVENT LEAKAGE OR REPAIR THE CRACKING AT THE NIPPLE. THE RECALL BEGAN ON JUNE 27, 2008. OWNERS MAY CONTACT AUDI AT 1-800-822-2834.
VOLKSWAGEN OF AMERICA, INCManufacturer number 20L8/JYView on NHTSA.gov
06V198000

ELECTRICAL SYSTEM

Jun 5, 2006
70,512 units potentially affected
The defect: ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH HALOGEN LOW BEAM HEADLIGHTS, CERTAIN CONNECTOR PINS IN THE HEADLIGHT SWITCH CONNECTOR COME INTO CONTACT WITH EACH OTHER CAUSING A SHORT CIRCUIT. NOTE: VEHICLES WITH XENON LOW BEAM HEADLIGHTS ARE NOT AFFECTED BECAUSE THE CIRCUIT IN THESE VEHICLES CONTAINS A FUSE, WHICH PRECLUDES EXCESSIVE CURRENT FLOW IN THE CASE OF A SHORT CIRCUIT. AUDI S6 AND S6 AVANT VEHICLES ARE ALL EQUIPPED WITH XENON LOW BEAM HEADLIGHTS AND, THEREFORE, ARE NOT LONGER AFFECTED BY THIS RECALL.
The risk: THIS CONDITION COULD LEAD TO OVERHEATING OR FIRE.
The remedy: DEALERS WILL REROUTE THE WIRING HARNESS BY INSTALLING A JUMPER WIRING HARNESS. THE RECALL BEGAN ON DECEMBER 16, 2006. OWNERS MAY CONTACT AUDI AT 1-800-822-2834.
VOLKSWAGEN OF AMERICA, INCManufacturer number JNView on NHTSA.gov

Safety investigations

NHTSA inquiries naming this vehicle. An investigation is not a finding of a defect.

PE08008ClosedPreliminary Evaluation

FUEL TANK LEAK

Opened Jan 31, 2008
Closed May 30, 2008

VOLKSWAGEN (VW) IS RECALLING CERTAIN VW PASSAT 4MOTION AND AUDI A6 QUATTRO AND ALLROAD QUATTRO ALL-WHEEL DRIVE PASSENGER CARS.VW VEHICLES SUBJECT TO RECALL WERE MANUFACTURED FROM NOVEMBER 22, 2000 THROUGH MAY 31, 2005 AND AUDI VEHICLES SUBJECT TO RECALL WERE MANUFACTURED FROM JUNE 2, 2001 TO JUNE 1, 2005.THE NHTSA RECALL NUMBER FOR THE VW VEHICLES IS 08V-156 (VW ALSO IS CORRECTING DEFECTS RELATED TO HEAT SHIELD AND FUEL LINE HAZARDS FOR THESE VEHICLES AND FOR 1999-2000 PASSATS IN THIS RECALL ACTION.)THE NHTSA RECALL NUMBER FOR THE AUDI VEHICLES IS 08V-157.SINCE 2006, ODI HAS RECEIVED 17 COMPLAINTS OF FUEL LEAKING FROM THE SUBJECT VEHICLES' FUEL TANKS.THE 400 COMPLAINTS SHOWN ABOVE MAY INCLUDE DUPLICATE REPORTS TO ODI AND THE MANUFACTURER. WHILE THE CONSEQUENCE (FUEL LEAKS FROM THE TOP OF THE TANK) IS SIMILAR FOR BOTH THE PASSAT AND AUDI SUBJECT VEHICLES, DIFFERENCES IN DESIGN AND CONSTRUCTION REQUIRE A DIFFERENT REMEDY FOR EACH VEHICLE.ON THE PASSATS, THE VENTILATION LINE COULD HAVE BEEN INSTALLED IMPROPERLY WITH TENSION AND WITH AN INCORRECTLY POSITIONED CABLE TIE.THE TENSION COULD CAUSE CRACKED OR BROKEN NIPPLES ON THE FUEL TANK ROLLOVER VALVE.ON THE AUDI VEHICLES, A MATERIAL CHANGE (EFFECTIVE JUNE 2, 2001) WITH DIFFERENT AGING CHARACTERISTICS USED FOR THE ROLLOVER VALVE AND THE USE OF AN INFLEXIBLE ALUMINUM VENTILATION LINE COULD CAUSE CRACKING OF THE NIPPLE ON THE ROLLOVER VALVE.VW IS RECALLING ALL VEHICLES SUBJECT TO THESE DEFECTS.IT WILL INSPECT PASSATS TO ENSURE THAT THE VENT LINE IS TENSION FREE AND CORRECT THE INSTALLATION IF TENSION IS FOUND.IF A CRACK OR FUEL LEAK IS FOUND, VW WILL REPLACE THE FUEL TANK.AUDI WILL REPAIR ALL SUBJECT VEHICLES BY REINFORCING THE FUEL TANK ROLLOVER VALVE WITH AN EPOXY ADHESIVE.THIS INVESTIGATION IS CLOSED.

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLYLed to recall 08V156000

Recent owner complaints

Reports submitted to NHTSA, shown in the owner's own words

View all 35
BrakesDriver assistance
Filed Dec 12, 2023

- 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

NHTSA ID
11559710
Incident
Oct 31, 2023
Fuel system
Filed Dec 9, 2018

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)

NHTSA ID
11157093
Incident
Nov 18, 2018
Mileage
53,000 mi
Electrical
Filed Jul 25, 2017

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 - IT IS ACTUALLY NOW A DISTRACTION AND HAZARD. AS WELL, OPERATING GOOGLE "ANDROID AUTO" CAUSES MORE SIGNIFICANT DRIVING DISTRACTIONS WHEN USING THE BACKUP CAMERA FUNCTION OF THE AVH-4100. COMPLAINTS TO PIONEER ELECTRONICS HAVE BEEN FRUITLESS. THEY SEEM TO BE ARROGANT AND CLAIM: "ALL OF OUR PRODUCTS ARE THOROUGHLY TESTED." I WOULD LIKE PIONEER ELECTRONICS TO FIX THE SOFTWARE ISSUE AND CREATE A NEW RELEASE THAT ALLOWS THE BACKUP CAMERA TO WORK WITHOUT A DISTRACTION AND SAFTY-HAZARD.

NHTSA ID
11010494
Incident
Jul 25, 2017
Fuel system
Filed Jan 11, 2016

WHEN ENGINE IS COLD, USUALLY BELOW 0 DEGREES FUEL SPRAYS FROM INJECTORS. THIS COULD IGNITE ON EXHAUST MANIFOLDS CAUSING CAR FIRE.

NHTSA ID
10819557
Incident
Jan 7, 2016
Engine
Filed Jun 8, 2015
Fire reported

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 THE FAILURE. THE FAILURE MILEAGE WAS 103,000.

NHTSA ID
10724137
Incident
Jun 7, 2015
Mileage
103,000 mi
BrakesDriver assistance
Filed Feb 12, 2015

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

NHTSA ID
10683045
Incident
Jan 1, 2015
Mileage
110,000 mi
Fuel system
Filed Jan 27, 2015

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 TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 146,569.

NHTSA ID
10679130
Incident
Oct 30, 2014
Mileage
146,569 mi
Driver assistance
Filed Nov 12, 2014

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 TELL THEM THE PART WAS DEFECTIVE, BUT THEY WOULD NOT LISTEN. THAT IS WHY I THINK THERE SHOULD BE A RECALL, TO SEND THEM A MESSAGE. *TR

NHTSA ID
10654540
Incident
Oct 21, 2014
Mileage
69,201 mi

Manufacturer communications

A bulletin sent by a manufacturer to its dealers. Not a recall, and repairs are not necessarily free.

A0023742052680_4

EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

This bulletin provides information on the additional reporting requirements for safety related inquiries.

SM 48-2022

EQUIPMENT

This special notice is to inform dealers to return the parts listed if it meets the criteria provided.

A0021482021205_6

EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; STRUCTURE

This informational bulletin explains how to order replacement VIN plates, Safety Certification Labels, etc.

A4021242016453_4

SUSPENSION

This bulletin contains instructions for determining if bushings need to be replaced.

A0020362002047_1

EQUIPMENT:ELECTRICAL

This information bulletin contains instructions for technicans on how to ensure their TAC call goes smoothly.

A9419182012749_1

EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; EXTERIOR LIGHTING

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 Avant, 2004-2006 S8

Manufacturers file copies of the bulletins they send to dealers with NHTSA. These often describe diagnostic or repair procedures for a known condition. They are not recalls: repairs described in a bulletin are usually only free if the vehicle is still under warranty or the manufacturer has extended coverage.

Compare model years

Complaint and recall counts across every year of this model

Audi A6 by model year
YearComplaintsRecallsInvestigationsIssue Index
2027000—
2026500—
2025520—
2024010—
2023210—
2022250—
20211511056.1
2020249054.7
20191137052.5
2018112055.5
2017203043.7
2016513050.7
2015224056.6
2014414050.7
2013526053.5
2012598043.2
2011213054.2
2010173052.8
2009214046.2
2008714049.8
2007534049.1
2006674048.1
2005913148.5
2004Viewing354152.0
2003667154.9
2002884155.2
20011137262.1
20001484458.5
19992179866.5
199813010662.7
1997202054.4
1996512045.5
1995162149.6
1994211—

Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers. Older model years have had longer for reports to accumulate.