1999 Audi A6: common problems and reliability
· 1997-2004231 owner complaints on record.
Most complaints are about fuel system. 9 recalls.
Should I buy a 1999 A6?The 1999 Audi A6 has 231 owner-filed NHTSA complaints and 9 recalls on record. The most-reported areas are fuel system and service brakes. Owners most often flag timing belt replacement is extremely labor-intensive (engine must be put into service position) and expensive.
Safety record for the 1999 model year
Source: NHTSA complaints and recalls filed for 1999 Audi A6 vehicles (US, public record).
Is 1999 a good year for the A6?
Across the 30 A6 model years we track, complaint volume runs from 2 (2023) to 231 (1999). With 231 complaints, the 1999 A6 sits above the model's median of 54.
These are raw NHTSA complaint totals, not adjusted for how many cars sold or how long each model year has been on the road. Older and higher-selling years accumulate more complaints.
Where owners report problems
Recalls affecting the 1999 A6
air bags:frontal:driver side:inflator module
Campaign 20V056000Volkswagen 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 manufacturing issue, the NADI inflators may absorb moisture, possibly causing the air bag to deploy improperly in the event of a crash.
electrical system
Campaign 06V198000ON 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
Campaign 01V157000VEHICLE 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 FUEL TANK MAY NOT IN FACT BE FULL OR COULD BE EMPTY.
steering:linkages:rod:relay:connecting
Campaign 99V248000VEHICLE 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.
Show 5 more recalls
electrical system
Campaign 04V133000ON 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.
steering:linkages:rod:relay:connecting
Campaign 00V414000VEHICLE 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.
service brakes, hydraulic:power assist:vacuum:hoses, lines/piping, and fittings
Campaign 99V131001VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH AUTOMATIC TRANSMISSIONS. A CONTROL VALVE IN THE VACUUM HOSE CONNECTING THE BRAKE BOOSTER TO THE INTAKE MANIFOLD MAY NOT OPEN OR CLOSE FULLY AT TEMPERATURES BELOW -4 F UNDER CERTAIN DRIVING CONDITIONS.
vehicle speed control
Campaign 04V495000ON CERTAIN PASSENGER VEHICLES EQUIPPED WITH 2.8L, V6 5-VALVE ENGINES, AND AUTOMATIC TRANSMISSIONS, WHILE DRIVING DURING EXTREMELY LOW AMBIENT TEMPERATURES THE THROTTLE MAY FREEZE IN AN OPEN POSITION DUE TO ICE ACCUMULATING IN THE THROTTLE BODY.
fuel system, gasoline:storage:tank assembly:filler pipe and cap
Campaign 99V058000VEHICLE DESCRIPTION: PASSENGER VEHICLES EQUIPPED WITH QUATTRO DRIVE SYSTEM WHICH EMPLOYS A FUEL AND FUEL VAPOR LEAK DETECTION SYSTEM. IF THE VEHICLE IS REFUELED SHORTLY AFTER THE ENGINE IS STARTED, AND IS KEPT RUNNING WHILE BEING REFUELED, THE FUEL VAPOR RECOVERY SYSTEM COULD PRODUCE SUFFICIENT BACK PRESSURE TO CAUSE FUEL TO BE EJECTED AFTER A COMPLETE FILL-UP WHEN THE FUEL PUMP NOZZLE IS REMOVED FROM THE FILLER NECK.
What owners report on the 1997-2004 A6
Owners are sharply divided on this generation. Many describe it as a beautiful, classic design that is rewarding to drive when running well, but the overwhelming sentiment is that it is an expensive, unreliable daily driver at this age.
- Very frequentTiming belt replacement is extremely labor-intensive (engine must be put into service position) and expensive
- Very frequent2.7T biturbo engine is notoriously unreliable and prone to turbo failure
- Very frequentParts fatigue and failure of multiple systems due to age
- RecurrentEngine failure before 160k-180k miles is common, especially on the 2.7T
- RecurrentAuxiliary water pump failure
Owner insights for the 1997-2004 A6. Read the full 1997-2004 owner report.
Other A6 model years
Compare every A6 year side by side to see how 1999 ranks against the rest.
Compare the A6 against its rivals
Looking at a specific car?
We're building a full check by VIN: the exact trim and engine, its known problems and recalls, what to inspect, a fair price, and how it compares with its rivals. Get an email when it's ready.
One email when it launches. Unsubscribe any time. Privacy