IllustrationWHEN IT IS RAINING THERE IS A HESITATION OF A SECOND OR SO WHEN THE BRAKES ARE APPLIED. *AK
1999 Audi A4
Owner reports · Recalls · Investigations
More warning signs than most A4 years
Owner complaints for the 1999 Audi A4 are substantially higher than the model-year median of 76.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all A4 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
20–25K
625–50K
4050–75K
2875–100K
19100–150K
5150K+
100 reports with mileage · 90 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Service Brakes, Hydraulic. Review the 81 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Engine And Engine Cooling. Review the 28 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Vehicle Speed Control. Review the 16 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
9 crash reports2 fire reports4 injury reports
What owners actually said
190 reportsTURN SIGNALS AND THE HAZARD LIGHTS HAVE BECOME INOPERABLE. DEALER IS REPAIRING THE VEHICLE. *AK
CONSUMER NOTICE THAT THE VEHICLE LOSES POWER BETWEEN THE 3RD AND 4TH GEARS AND RPM'S DROP. YH
THE BRAKES ON MY 1999 A4 SUFFER EXTREMELY REDUCED PERFORMANCE (WAY BEYOND WHAT IS NORMAL) IN WET CONSITIONS. I REALIZE THAT SOME REDUCED BRAKING EFFECTIVENESS IS APPARENT IN ALL CARS IN WET CONDITIONS, BUT TWICE NOW I HAVE SLAMMED ON THE BRAKES IN VERY RAINY CONDITIONS AND NOTHING AT ALL HAS HAPPENED FOR OVER A SECOND!!!!!! OT…
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THE BRAKES ON MY 1999 A4 SUFFER EXTREMELY REDUCED PERFORMANCE (WAY BEYOND WHAT IS NORMAL) IN WET CONSITIONS. I REALIZE THAT SOME REDUCED BRAKING EFFECTIVENESS IS APPARENT IN ALL CARS IN WET CONDITIONS, BUT TWICE NOW I HAVE SLAMMED ON THE BRAKES IN VERY RAINY CONDITIONS AND NOTHING AT ALL HAS HAPPENED FOR OVER A SECOND!!!!!! OTHER A4 OWNERS HAVE ALSO REPORTED THIS PROBLEM, AND AUDI RESPONDED BYU ENLARGING THE FRONT BRAKE SHIELDS FOR MY2000 CARS. THERE SHOULD BE A RECALL TO FIX THIS DEFECT; IT IS EXTREMELY DANGEROUS. *AK
IN RAINY CONDITIONS, THE BRAKES EXHIBIT A DANGEROUS 2-3 SECOND DELAY CAUSING GREATLY IMPAIRED BRAKING ABILITY OF THE CAR. ALMOST HIT A CAR IN FRONT IN TWO INSTANCES DESPITE MORE THAN ADEQUATE DISTANCE. BRAKES WORK NORMALLY IN DRY WEATHER HOWEVER. *AK
WET DISC BRAKES HAVE NO STOPPING ABILITY FOR 1-2 SECONDS. DRY BRAKES FUNCTION NORMALLY
DELAYED BRAKING RESPONSE IN WET CONDITIONS. IF THE BRAKES ARE NOT USED FOR SOME TIME IN WET CONDITIONS, WATER WILL BUILD UP ON THE FRONT ROTORS AND CAUSE A 1-2 SECOND DELAY IN INITIAL BRAKING RESPONSE. *AK
DURING WET WEATHER BRAKING, THE FRONT DISC BRAKES SEEM TO FAIL. THE CARS FRONT END SEEMS TO SLIDE TO THE LEFT APPROXIMATELY 4 FEET UPON BRAKING. THIS HAPPENS ONLY IN THE RAIN, WITH NO ADVERSE EFFECTS DURING DRY WEATHER. I HAVE CONTACTED AUDI, WHO THEN REFERRED ME TO THE DEALERSHIP. THE DEALERSHIP HAS STATED THAT AUDI WILL NO…
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DURING WET WEATHER BRAKING, THE FRONT DISC BRAKES SEEM TO FAIL. THE CARS FRONT END SEEMS TO SLIDE TO THE LEFT APPROXIMATELY 4 FEET UPON BRAKING. THIS HAPPENS ONLY IN THE RAIN, WITH NO ADVERSE EFFECTS DURING DRY WEATHER. I HAVE CONTACTED AUDI, WHO THEN REFERRED ME TO THE DEALERSHIP. THE DEALERSHIP HAS STATED THAT AUDI WILL NOT WARRANTY THE CORRECTION, SINCE THEY DO NOT KNOW HOW WIDESPREAD THE PROBLEM IS. HOWEVER, I HAVE NOTICED A LARGE AMOUNT OF COMPLAINTS ON YOUR WEBSITE, AND ON THE AUDIWORLD WEBSITE. I SUBMIT THAT THERE IS A DEFECT IN THE FRONT BRAKING SYSTEM OF THE A4 DURING WET WEATHER DRIVING, AND THAT THIS DEFECT COULD AND WILL CAUSE AN ACCIDENT. EVEN THOUGHT THE CAR DID STOP, IT REQUIRED STEERING CORRECTION TO PUT IT BACK INTO THE LANE. THE MANUFACTURER SHOULD ACKNOWLEDGE THAT THERE IS A DEFECT AND IT SHOULD BE COVERED BY THE MANUFACTURER. IF THERE IS AN ACCIDENT, AUDI WILL BE HELD RESPONSIBLE AND CAN BE SURE THE REPUTATION OF THEIR CARS WILL SUFFER AGAIN. PLEASE INVESTIGATE THIS PROBLEM AS IT IS POTENTIALLY DANGEROUS. *AK
THIS CAR SEEMS TO HAVE A SERIOUS PROBLEM DURING WET BRAKING. AFTER NUMEROUS OCCURRENCES, I WAS FORCED TO SPEND $400 TO REPLACE THE STOCK PADS THAT MAY CAUSE THIS PROBLEM. WITH THE NEW BRAKE PADS, NO RE-OCCURRENCE YET. MANUFACTURER SEEMS INATTENTIVE TO THIS. PERHAPS NHTSA CAN CONTACT MANUFACTURER REGARDING THIS ISSUE AS I'M NOT T…
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THIS CAR SEEMS TO HAVE A SERIOUS PROBLEM DURING WET BRAKING. AFTER NUMEROUS OCCURRENCES, I WAS FORCED TO SPEND $400 TO REPLACE THE STOCK PADS THAT MAY CAUSE THIS PROBLEM. WITH THE NEW BRAKE PADS, NO RE-OCCURRENCE YET. MANUFACTURER SEEMS INATTENTIVE TO THIS. PERHAPS NHTSA CAN CONTACT MANUFACTURER REGARDING THIS ISSUE AS I'M NOT THE ONLY OWNER TO EXPERIENCE THIS. *AK
WET BRAKING PERFORMANCE IS MISERABLE! AND DANGEROUS- MANY SECOND DELAYS. *AK
Official recalls
420V056000 · Air Bags:frontal:driver Side:inflator Module
Jan 31, 2020
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 manufacturing issue, the NADI inflators may absorb moisture, possibly causing the air bag to deploy improperly in the event of a crash.
Consequence & remedy
Consequence: 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.
Remedy: 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 contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 69BT.
00V414000 · Steering:linkages:rod:relay:connecting
Dec 6, 2000
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.
Consequence & remedy
Consequence: 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.
Remedy: DEALERS WILL REPLACE THE TIE RODS.
99V248000 · Steering:linkages:rod:relay:connecting
Sep 13, 1999
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.
Consequence & remedy
Consequence: 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.
Remedy: DEALERS WILL REPLACE THE TIE RODS.
99V131001 · Service Brakes, Hydraulic:power Assist:vacuum:hoses, Lines/piping, And Fittings
May 21, 1999
VEHICLE 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.
Consequence & remedy
Consequence: THIS CONDITION COULD CAUSE INSUFFICIENT VACUUM TO BE PROVIDED TO THE BRAKE BOOSTER.
Remedy: DEALERS WILL INSTALL A VACUUM BY-PASS SYSTEM INTO VEHICLES OPERATED IN THESE STATES WHICH IS DESIGNED TO PROVIDE SUFFICIENT VACUUM FOR FULL BRAKE ASSIST UNDER ALL WEATHER CONDITIONS.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
5EA04017 · STUCK-OPEN Throttle
Opened Jun 30, 2004 · Closed Feb 10, 2005
Status: closed (inferred from source dates) · Fuel System, Gasoline:fuel Injection System
VWOA HAS RECALLED APPROXIMATELY 28,300 MY 1998-99 A6 VEHICLES IN COLD WEATHER STATES THAT EXPERIENCED THE HIGHEST RATE OF THROTTLE ICING INCIDENTS IN THE SUBJECT VEHICLES (04V-495).THE FAILURE RATE IN THE A4 AND PASSAT VEHICLES IS MUCH LOWER THAN IN THE RECALLED VEHICLES.ODI WILL CONTINUE TO MONITOR THE EXPERIENCE IN THE A4 AND PASSAT VEHICLES.THE CLOSING OF THIS INVESTIGATION DOES NOT CONSTITUTE A FINDING BY NHTSA THAT NO SAFETY-RELATED DEFECT EXISTS FOR THE AUDI A4 OR VW PASSAT VEHICLES.THE AGENCY RESERVES THE RIGHT TO TAKE FURTHER ACTION IF WARRANTED BY A CHANGE IN CIRCUMSTANCES. FOR FURTHER DETAILS SEE THE ATTACHED CLOSING REPORT.
PE02008 · Brake And Clutch Pedal Bracket
Opened Jan 23, 2002 · Closed Jul 12, 2002
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
No summary supplied.
EA00021 · Degraded Braking In Wet Weather
Opened Aug 11, 2000 · Closed Mar 29, 2002
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
There is no summary currently available
PE00016 · Degraded Braking Wet Weather Condition
Opened Apr 4, 2000 · Closed Aug 11, 2000
Status: closed (inferred from source dates) · Electrical System
There is no summary currently available
RQ99008 · Power Brake Booster Vacuum BY-PASS
Opened Jun 1, 1999 · Closed Nov 14, 2000
Status: closed (inferred from source dates) · Service Brakes, Hydraulic
There is no summary currently available