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 231 complaints with NHTSA about the 1999 Audi A6, and it carries 9 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 |
|---|---|---|
| Electrical system | 31 | 13% |
| Service brakes | 23 | 10% |
| Fuel system | 21 | 9% |
| Vehicle speed control | 20 | 9% |
| Engine and engine cooling | 14 | 6% |
| Visibility | 14 | 6% |
| Steering | 12 | 5% |
| Fuel system | 10 | 4% |
| Seats | 8 | 3% |
| Exterior lighting | 8 | 3% |
Verbatim from NHTSA complaint records, trimmed for length.
TL* THE CONTACT OWNS A 1999 AUDI A6. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 20V056000 (AIR BAGS) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS UNAVAILABLE. THE LOCAL DEALER WAS NOT CONTACTED. THE VEH
NHTSA complaint: Air bags
TL* THE CONTACT OWNS A 1999 AUDI A6. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 20V056000 (AIR BAGS) HOWEVER, THE PART TO DO THE RECALL REPAIR WAS UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER E
NHTSA complaint: Air bags
TAKATA RECALL I'VE HAD TO REPLACE A WHEEL BEARING AND AXEL 2X @ $550 EACH TIME. CAR WOULDN'T ALIGN RIGHT, SO I REPLACED THE TIRES SEVERAL TIMES DUE TO THE WEARING ON ONE SIDE. THE CALIPERS WON'T COME OFF WHEN CHANGING T
NHTSA complaint: Steering
WHILE DRIVING 60 MPH ON THE FREEWAY, THE CAR ACCELERATED ON ITS OWN TO 72 MPH AS IF GOING INTO CRUISE CONTROL. CONFIRMED THE CRUISE CONTROL SWITCH WAS TURNED OFF. APPLIED THE BRAKES SEVEN TIMES. CAR DID NOT RESPOND TO
NHTSA complaint: Vehicle speed control
TL* THE CONTACT OWNS A 1999 AUDI A6. THE CONTACT STATED THAT WHILE DRIVING 25 MPH, SMOKE AND FLAMES BEGAN TO ENTER THE VEHICLE THROUGH THE AIR VENTS. THE CONTACT MOVED THE VEHICLE OVER AND EXTINGUISHED THE FIRE WITH A FI
NHTSA complaint: Electrical system
HAVE HAD NOTHING BUT PROBLEMS WITH THE AUDI A6 SINCE INCEPTION. CAR STARTED MAKING A HORRIBLE NOISE THAT SOUNDS LIKE IT IS COMING FROM ENGINE OR TRANSMISSION. CAR CANNOT PASS EMISSIONS. ENGINE SMOKING FLUID IS POURIN
NHTSA complaint: Suspension
AUDI CLAIMS THAT TRANSMISSION FLUID AND FILTER NEVER NEEDS TO BE CHANGED, THIS IS NOT ONLY INCORRECT, BUT THIS ALSO CAUSES TRANSMISSION PROBLEMS ON A REGULAR BASIS. THIS SHOULD NOT BE TOLD TO THE CUSTOMER FOR IT IS A LI
NHTSA complaint: Suspension
MY 1999 AUDI A6 2.8 HAS ABS CONTROL MODULE FAILURE. THIS APPEARS TO BE A COMMON PROBLEM AMONG 1996 TO 2001 AUDI'S AND VW'S LACK OF ANTI-LOCK BRAKING SYSTEM CONTROL MAKES MY VEHICLE UNSAFE. AUDI IS NOT WILLING TO CORRE
NHTSA complaint: Service brakes
NHTSA lists 9 recall campaigns for the 1999 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 | 78 | good |
|---|---|---|
| Longevity est. | 75 | 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 231 complaints with NHTSA for this model-year, and electrical system is the most reported area with 31 of them (13%). There are 9 recalls on record. Check any specific car against its VIN before buying.
AVOIR scores its reliability 78/100 (good) 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 75/100, but that figure is an estimate built from the powertrain and the brand's record, not a measurement. A 1999 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 63/100. 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.