Problems · NHTSA complaints
1999 Audi A4 problems
Owners filed 190 complaints about the 1999 Audi A4 with NHTSA between Jan 1999 and Jan 2016. The most-cited component is service brakes, hydraulic (81).
Complaints
190
Filed with NHTSA
Crashes
9
Reported by owners
Fires
2
Reported by owners
Injuries
5
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Service brakes, hydraulic81
- Engine and engine cooling28
- Vehicle speed control16
- Steering14
- Electrical system11
- Power train10
- Air bags8
- Suspension8
- Tires7
- Service brakes, air6
- Visibility5
- Structure4
- Fuel system, gasoline4
- Exterior lighting4
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 27, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
15
30
15
8
21
20
29
16
8
11
5
4
4
3
0
0
0
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 1999 | 15 |
| 2000 | 30 |
| 2001 | 15 |
| 2002 | 8 |
| 2003 | 21 |
| 2004 | 20 |
| 2005 | 29 |
| 2006 | 16 |
| 2007 | 8 |
| 2008 | 11 |
| 2009 | 5 |
| 2010 | 4 |
| 2011 | 4 |
| 2012 | 3 |
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Service brakes, hydraulic
81 reports2 crashes1 related recall
“MY AUDI, ALONG WITH THOUSANDS OF OTHERS HAVE HAD THEIR ABS CONTROL UNIT MALFUNCTION BECAUSE OF DESIGN. THIS MALFUNCTION CAUSES THE ABS TO NOT WORK ON THE AFFECTED VEHICLE. VOLKSWAGEN, THE COMPANY THAT PRODUCES AUDIS AND VWS ACTUALLY RECALLED THIS EXACT PART ON THEIR VW VEHICLES, BUT FOR SOME REASON REFUSES TO CORRECT THE PROBLEM FOR THEIR AUDI CUSTOMERS. THE COST TO REPLACE THIS CONTROL UNIT IS $1,400 - $1,700, AND AS SUCH I HAVE BEEN DRIVING MY VEHICLE WITHOUT ITS ABS FUNCTIONING. BELOW IS A DESCRIPTION OF THE RECALL FOR THIS EXACT PART, BUT ON THE VW JETTA: "2002 VOLKSWAGEN JETTA GLS NHTSA RECALL ID NUMBER: 02V031000 RECALL DATE: JAN 31, 2002 COMPONENT: SERVICE BRAKES, HYDRAULIC:ANTILOCK POTENTIAL UNITS AFFECTED: 55000 SUMMARY: ON SOME PASSENGER VEHICLES, SHORT CIRCUITS CAN OCCUR WITHIN THE ELECTRONIC CONTROL UNIT OF THE ANTI-LOCK BRAKING SYSTEM (ABS). CONSEQUENCE: THIS CAN RESULT IN A FIRE. REMEDY: DEALERS WILL REPLACE THE ABS CONTROL UNIT. OWNER NOTIFICATION BEGAN MARCH 8, 2002. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT VOLKSWAGEN AT…”
Engine and engine cooling
28 reports1 fire1 related recall
“THE CAR IS EXPERIENCING UNINTENDED ACCELERATION, USUALLY, BUT NOT ALWAYS, AFTER HEAVY ACCELERATION. OVER 10 OCCURRENCES. CANNOT REMEDY BY PULLING BACK THE ACCELERATOR. CAR MUST BE TURNED OFF AND THE ENGINE MUST RECORD 0 RPM TO REMEDY THE PROBLEM. *TR”
Vehicle speed control
16 reports2 crashes
“JANUARY 17, 2007, 8 DEGREES - DRY ROAD CONDITIONS I ACCELERATED UP A STEEP HILL ON MY WAY TO WORK WHEN AT THE TOP OF THE HILL I TOOK MY FOOT OFF THE ACCELERATOR AND THE VEHICLE'S RPMS RACED TO 7,000. I POPPED THE CAR INTO NEUTRAL AND PUNCHED THE GAS PEDAL AND THE CAR REDUCED SPEED AND RPMS THIS IS VERY DANGEROUS. THIS IS MY SECOND COMPLAINT - IT HAPPENED LAST WINTER WITH WET ROAD CONDITIONS BUT VERY VERY COLD. I TOOK THE CAR TO THE DEALER LAST YEAR AND THEY CLAIM THERE IS NOTHING WRONG. I HAD THE ACCELERATOR CABLE REPLACED. THERE IS A RECALL ON THE AUDI A-6 AND THE DEALER CLAIMS MY CAR DOES NOT QUALIFY. ON 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. IF THIS OCCURS, THE VEHICLE MAY FAIL TO REDUCE SPEED WHEN THE DRIVER LIFTS HIS/HER FOOT FROM THE GAS PEDAL. THIS LOSS OF VEHICLE CONTROL COULD RESULT IN A CRASH WITHOUT WARNING. SOMETHING MUST BE DONE TO MAKE AUDI REALIZE THIS IS VERY DANGEROUS AND APPLIES TO THE A-4 NOT JUST THE A-6. *NM *NM”
Steering
14 reports1 crash2 related recalls
“TL*THE CONTACT OWNS A 1999 AUDI A4. WHILE DRIVING 5 MPH IN A PARKING LOT, THE VEHICLE BEGAN TO MAKE A SQUEAKING NOISE WHEN MAKING A RIGHT TURN. THE FAILURE OCCURRED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR INSPECTION. THE FAILURE WAS DUE TO EXCESSIVE WEAR OF THE TIE ROD. THE TECHNICIAN DISCOVERED NHTSA CAMPAIGN ID NUMBER 99V248000 (STEERING;LINKAGES;ROD:RELAY;CONNECTING); HOWEVER, THE VIN WAS NOT INCLUDED ALTHOUGH THE FAILURES WERE IDENTICAL. THE FAILURE MILEAGE WAS 79,000 AND CURRENT MILEAGE WAS 85,000.”
Electrical system
11 reports1 fire
“BOSCH ABS CONTROL UNIT HAS FAILED CAUSING A FLASHING ABS INDICATOR AND A SOLID BRAKE LIGHT. CAUSE IS ELECTRONIC. MANY DOCUMENTED CASES FOUND ON LINE. ABS WILL NOT ENGAGE. AUDI WILL NOT RECALL, BUT VW HAS RECALLED FOR THE SAME PROBLEM. *TR”
Power train
10 reports
“TL* THE CONTACT OWNS A 1999 AUDI A4. WHILE DRIVING AT 30 MPH, THE VEHICLE BEGAN INDEPENDENTLY SHIFTING INTO MANUAL MODE FROM AUTOMATIC. THE CONTACT WAS ABLE TO ADJUST THE SHIFTER TO NORMAL BUT THE FAILURE PERSISTED. THE DEALER ADVISED THE SHIFTER BLIND AND THE PRINTED CIRCUIT BOARD WOULD NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE AND CURRENT MILEAGES WERE 126,963.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 27, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.