2004 Audi A6
This year had at least 30% fewer complaints than this model's typical year.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
- Complaints
- 35
- Recalls
- 4
- Investigations
- 1
- Top problem
- Fuel system, gasoline
Campaigns on file for 2004
Opened by NHTSA
14% of complaints
Complaints per year
2004: 35 complaints
View as data table
| Year | Complaints |
|---|---|
| 1994 | 2 |
| 1995 | 16 |
| 1996 | 51 |
| 1997 | 20 |
| 1998 | 130 |
| 1999 | 217 |
| 2000 | 148 |
| 2001 | 113 |
| 2002 | 88 |
| 2003 | 66 |
| 2004 | 35 |
| 2005 | 91 |
| 2006 | 67 |
| 2007 | 53 |
| 2008 | 71 |
| 2009 | 21 |
| 2010 | 17 |
| 2011 | 21 |
| 2012 | 59 |
| 2013 | 52 |
| 2014 | 41 |
| 2015 | 22 |
| 2016 | 51 |
| 2017 | 20 |
| 2018 | 11 |
| 2019 | 114 |
| 2020 | 26 |
| 2021 | 18 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 5 |
| 2026 | 6 |
Known problem areas
Percentages can add to more than 100% — a complaint can name more than one system.
Fuel system, gasoline
14% · 5 reportsMost commonly citing tank assembly.
Show complaint excerpts
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.
NHTSA ODI report, 2013-12-10
Service brakes
14% · 5 reportsMost commonly citing hydraulic.
Show complaint excerpts
- 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…
NHTSA ODI report, 2023-12-12
Also filed under Forward collision avoidance
Wheels
9% · 3 reportsMost commonly citing rim.
Fuel/propulsion system
9% · 3 reportsShow complaint excerpts
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.
NHTSA ODI report, 2018-12-09
Electrical system
9% · 3 reportsShow complaint excerpts
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.
NHTSA ODI report, 2012-05-22
Safety timeline
4 recalls · 1 investigation · oldest first
To check one car, enter its VIN on the NHTSA recall page. Check a VIN →
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R
2004-07-26Electrical system04V133000 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…
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…
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R
2006-12-16Electrical system06V198000 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…
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.
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I
2008-01-31Preliminary evaluationClosed 2008-05-30 Fuel tank leak
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R
2008-06-27Fuel system, gasoline08V157000 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…
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.
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2011-06-21Fuel system, other11V267000 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…
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…
Buy-smart checklist
2004 Audi A6 — pre-purchase inspection
Inspect
- Fuel system, gasoline: 5 reports on file for this year.
- Service brakes: 5 reports on file for this year.
- Wheels: 3 reports on file for this year.
Verify these recalls were completed
- Recall 04V133000 · Electrical system
- Recall 06V198000 · Electrical system
- Recall 08V157000 · Fuel system, gasoline
- Recall 11V267000 · Fuel system, other
Other years of this model
See all years ranked →FAQ
- Is the 2004 Audi A6 reliable?
- Based on NHTSA complaint volume compared to this model's typical year, the 2004 Audi A6 is rated "better than typical".
- What are the most common problems with the 2004 Audi A6?
- The most-reported component is fuel system, gasoline, accounting for 14% of complaints on file.
- How many recalls does the 2004 Audi A6 have?
- 4 recalls on file for this model year.
Data updated 2026-11-01 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.