Reliability, what owners report, and what it costs to keep.
AVOIR's read: the numbers are mixed and the complaint record is worth reading before you commit.
Owners have filed 134 complaints with NHTSA about the 1998 Audi A6, and it carries 10 recalls. These are owner allegations rather than confirmed defects, but the pattern of what people complain about is the most useful signal a used buyer has.
| Area | Complaints | Share |
|---|---|---|
| Fuel system | 29 | 22% |
| Service brakes | 16 | 12% |
| Vehicle speed control | 15 | 11% |
| Suspension | 10 | 7% |
| Steering | 8 | 6% |
| Structure | 8 | 6% |
| Electrical system | 6 | 4% |
| Engine and engine cooling | 4 | 3% |
| Visibility | 4 | 3% |
| Air bags | 3 | 2% |
Verbatim from NHTSA complaint records, trimmed for length.
Takata recall. The contact owns a 1998 Audi A6. The contact received notification of NHTSA campaign number: 20V056000 (Air Bags) however, the part to do the recall repair was not yet available. The vehicle was taken to t
NHTSA complaint: Air bags
FUEL WAS FOUND LEAKING FROM THE ROLLOVER VALVE NIPPLE ON THE FUEL TANK. THIS NIPPLE HAS BEEN KNOWN TO CRACK WHEN THE METAL VENTILATION LINE LINE ADDS STRESS TO THE PLASTIC NIPPLE. GASOLINE WAS FOUND IN A PUDDLE ON THE FL
NHTSA complaint: Fuel/propulsion system
TL* THE CONTACT OWNS A 1998 AUDI A6. THE CONTACT STATED THAT THE VEHICLE CAUGHT ON FIRE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS FOUND THAT THE DASHBOARD WIRES HAD FAILED. THE VEHICLE WAS NOT REPAIRED. THE MANUF
NHTSA complaint: Electrical system
TL* THE CONTACT OWNS A 1998 AUDI A6. WHILE TRAVELING 25 MPH, THE CONTACT NOTICED THAT THE FRONT END OF THE VEHICLE HAD SUDDENLY DROPPED TO THE GROUND. THE VEHICLE WAS TAKEN TO THE DEALER, WHERE THE FRONT LOWER CONTROL AR
NHTSA complaint: Suspension
I AM EXPERIENCING AN ISSUE WITH MY VEHICLE THAT WAS RECALLED BY THE FACTORY AUDI AG BUT MY VEHICLE WAS NOT LISTED AS ONE OF THE RECALLED VEHICLE. I AM AFRAID OF GETTING STRANDED DUE TO AN IMPROPER FUEL READING. PLEASE AD
NHTSA complaint: Fuel system
DEAR DOT, I'VE A 1998 AUDI A6 QUATTRO. MY ABS SYSTEM SHOWS WARNING YELLOW ABS LIGHT AND RED FLASHING BRAKE LIGHT AT ALL TIME. I'VE TAKEN MY TWO SHOPS AND THEY BOTH INDICATED THAT THE ABS UNIT IS DEFECTIVE AND N
NHTSA complaint: Service brakes
I HAVE AN 1998 AUDI A6, 2.8L, V6, QUATTRO, AVANT WITH A 115000 MLS AND MY CARS'S REAR SEAT, SEAT BELT IN (THE MIDDLE PASSENGER "BELT SHAPE, ONE") SEAT STOP WORKING AND IT IS STUCK IN ITS OPEN POSITION ABOUT 15"-16" OUT.
NHTSA complaint: Seat belts
I PURCHASED A USED 98 AUDI A6 PN 4/28/07. WHEN I PURCHASED THE CAR, THE ONLY ISSUES WITH THE CAR WERE THIS GASSY SMELL INSIDE THE CAR WHEN YOU TURN ON THE HEAT, AND A SMOKE COMING FROM THE SOME PIPE. MY MECHANIC TOLD ME
NHTSA complaint: Fuel system
NHTSA lists 10 recall campaigns for the 1998 Audi A6. Recalls are free to have fixed at a franchised dealer regardless of who owns the car now, but only if they were never done, so check the VIN of the specific car rather than trusting the model.
Volkswagen Group of America, Inc. (VW) is recalling certain 2000-2001 TT Roadster, 2000 TT Coupe, 1999 Audi A8, 1998-2000 Audi A6, and 1999-2000 Audi A4 vehicles equipped with Non-Azide Driver air bag Inflators (NADI) that do not contain phase stabilized ammonium nitrate (PSAN) propellant. Due to a
Risk: In the event of a crash necessitating air bag deployment, the air bag may not properly protect the occupant, increasing the risk of serious injury or death.
Fix: Dealers will replace the driver frontal air bag inflator with an alternative inflator when the parts become available, free of charge. Owner notifications were mailed September 21, 2021. Owners may c
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 CONTAIN
Risk: THIS CONDITION COULD LEAD TO OVERHEATING OR FIRE.
Fix: 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.
VEHICLE DESCRIPTION: PASSENGER VEHICLES. SULFUR IN FUEL INTERACTS WITH CERTAIN ADDITIVES FOUND IN WIDELY AVAILABLE GASOLINE CAUSING SULFUR TO BECOME DEPOSITED ON THE CONTACT POINTS OF THREE FUEL SENDING UNITS MOUNTED INSIDE THE FUEL TANK. THIS COULD CAUSE THE FUEL GAUGE TO READ FULL WHILE THE FUE
Risk: RUNNING OUT OF FUEL WITHOUT WARNING WHILE THE FUEL GAUGE INDICATES THAT THERE IS SUFFICIENT FUEL IN THE TANK LEAD TO SAFETY PROBLEMS.
Fix: DEALERS WILL REMOVE THE EXISTING FUEL LEVEL SENDING UNITS AND REPLACE THEM WITH FUEL LEVEL SENDING UNITS USING A NEW ALLOY COMPOSED OF GOLD, SILVER, AND A SMALL AMOUNT OF NICKEL, WHICH WILL NOT CHEMIC
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE TIE RODS OF THE STEERING ASSEMBLY ARE PROTECTED ON EACH SIDE BY A SEAL TO PREVENT MOISTURE AND DUST PARTICLES FROM ENTERING THE SWIVEL BEARING MECHANISM. IT IS POSSIBLE THAT SOME TIE ROD SEALS MAY NOT SEAL PROPERLY.
Risk: IF MOISTURE AND/OR DUST PARTICLES ENTER THE SWIVEL BEARING MECHANISM, THE SWIVEL BEARING COULD WEAR OVER TIME DIMINISHING THE STEERING CONTROL OF THE VEHICLE.
Fix: DEALERS WILL REPLACE THE TIE RODS.
| Reliability raw | 81 | excellent |
|---|---|---|
| Longevity est. | 77 | good |
| Maintenance | 61 | average |
| Depreciation | 54 | average |
| Performance | 52 | average |
| Efficiency | 34 | below average |
Percentile ranks against other midsize & large cars in the catalog.
What stands behind each score for this car:
Owners have filed 134 complaints with NHTSA for this model-year, and fuel system is the most reported area with 29 of them (22%). There are 10 recalls on record. Check any specific car against its VIN before buying.
AVOIR scores its reliability 81/100 (excellent) from NHTSA recall campaigns and complaint density. That figure is a raw complaint count, not yet adjusted for sales volume, so a high-volume model scores worse than it deserves.
AVOIR scores its longevity 77/100, but that figure is an estimate built from the powertrain and the brand's record, not a measurement. A 1998 car has no 200,000-mile population to observe yet, so treat it as a prior rather than evidence.
AVOIR's read: be careful, because the numbers are mixed and the complaint record is worth reading before you commit. Its overall ownership score is 65/100. Condition, mileage and service history still matter more than any score, so get a pre-purchase inspection on the specific car.
Sources: NHTSA recalls and complaints, EPA fuel economy, IIHS awards, and live market listings. A score describes a model-year, not the individual car in front of you. Get a pre-purchase inspection.