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#BS-2004-AUDA6-60D02004 Audi A6
Based on reports from 44 owners and 4 recalls for this exact model.
Preliminary Verdict
Proceed with Caution
Based on 44 complaints, 3 crashes, 2 fires, and 4 recalls.
Top reported problems
heater ac vent actuator valve flap broke
1 complaints β’ Severity 8/10
torque converter lock out clutch failure
1 complaints β’ Severity 10/10
rear bearings wore out
1 complaints β’ Severity 6/10
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Mechanic Inspection Checklist
8 owners reported fuel system issues β failures commonly reported around 72K miles.
Failure Timeline by Mileage
Peak failure range: 30β60K miles (11 reports) β’ Median: 72K miles
30,000-Mile Cost Projection
Best Case
Most Likely
Worst Case
Top cost driver: Fuel System (8 reports).
Also in your report
Owner Intelligence
AI-synthesized themes from real complaints
Buyer Lot Checklist
Questions, test drive checks, walk-away triggers
Negotiation Talking Points
Data-backed dollar deductions
Buy / Skip Verdict
Final recommendation with conditions
Where the complaints fall
2004 Audi A6: Known Issues & Problem Areas
Fuel System Issues
Fuel System complaints account for 18% of all reports filed for the 2004 Audi A6, with 8 owners filing complaints with NHTSA. The median mileage at time of complaint is 72,000 miles, suggesting issues tend to surface around the 72K-mile mark.
Wheels:rim Issues
Wheels:rim complaints account for 7% of all reports filed for the 2004 Audi A6, with 3 owners filing complaints with NHTSA. Owners should pay attention to wheels:rim-related symptoms during test drives and pre-purchase inspections.
Electrical Issues
Electrical complaints account for 7% of all reports filed for the 2004 Audi A6, with 3 owners filing complaints with NHTSA. Owners should pay attention to electrical-related symptoms during test drives and pre-purchase inspections.
Engine Issues
Engine complaints account for 7% of all reports filed for the 2004 Audi A6, with 3 owners filing complaints with NHTSA. Owners should pay attention to engine-related symptoms during test drives and pre-purchase inspections.
Data sourced from NHTSA owner complaints and community reports. The full report analyzes severity, repair costs, and failure patterns for each category.
Complaint trend by year
Complaints filed with NHTSA by year for the 2004 Audi A6. Recent trend: increasing.



Don't negotiate blind β know what this car costs to own
Repair costs β’ Negotiation scripts β’ Mechanic checklist β’ Buy/skip verdict
Recall History (4 recalls)
ELECTRICAL SYSTEM
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.
ELECTRICAL SYSTEM
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.
FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
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.
FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
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.
Recall severity analysis & seller scripts
The full report rates each recall's severity and gives you scripts for asking the seller about recall completion.
The worst model year for the Audi A6 is the 2000 β worth knowing if you're cross-shopping years. The biggest problem area is engine.
2004 Audi A6 vs. Class Average (Midsize Cars)
This vehicle
44
Class avg
266
Below the class average β fewer complaints than typical midsize cars vehicles. A good sign.
Complaint counts correlate with sales volume β popular vehicles naturally generate more reports. The full report normalizes for this.
About this data
NHTSA Complaints
Federal database of owner-filed safety complaints. 44 records for this vehicle.
NHTSA Recalls
Manufacturer-issued safety recalls. 4 recalls found for this vehicle.
Repair Cost Data
Real-world repair costs from owner reports and independent databases.
Other Audi A6 Model Years
2004 Audi A6: Frequently Asked Questions
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10 sections of AI analysis based on 44 owner reports. Know before you buy.