IllustrationBRAKES HESITATE WHEN CONSUMER APPLIES BRAKES & THE PEDAL GOES ALL THE WAY TO THE FLOOR. BRAKES WILL NOT WORK IN THE COLD WEATHER. *AK
1998 Audi A4
Owner reports · Recalls · Investigations
More warning signs than most A4 years
Owner complaints for the 1998 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
10–25K
825–50K
2750–75K
3875–100K
20100–150K
8150K+
102 reports with mileage · 156 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 112 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 →
- Suspension. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
6 crash reports2 fire reports10 injury reports
Service Brakes, Hydraulic complaints
112 reportsAUDI OF AMERICA HAS LAUNCHED A RECALL CAMPAIGN, LABELLED KU, FOR ITS DEFECTIVE BRAKES. I RECEIVED A FORMAL NOTIFICATION ON OCTOBER 10, 1999. HOEVER, SINCE THEN I HAVE BEEN UNABLE TO HAVE THIS RECALL PERFORMED AT ANY AUDI DEALER. SINCE THE RECALL REPRESENTS A SERIOUS DEFECT AND POTENTIAL HAZARD, I SEEK THE NHTSA'S INVOLVEMENT …
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AUDI OF AMERICA HAS LAUNCHED A RECALL CAMPAIGN, LABELLED KU, FOR ITS DEFECTIVE BRAKES. I RECEIVED A FORMAL NOTIFICATION ON OCTOBER 10, 1999. HOEVER, SINCE THEN I HAVE BEEN UNABLE TO HAVE THIS RECALL PERFORMED AT ANY AUDI DEALER. SINCE THE RECALL REPRESENTS A SERIOUS DEFECT AND POTENTIAL HAZARD, I SEEK THE NHTSA'S INVOLVEMENT TO HAVE THE RECALL PERFORMED ON MY VEHICLE AS SOON AS POSSIBLE. *AK
RECALL # 99V131000 BRAKES:HYDRAULIC:POWER ASSIST: BOOSTER: OWNER RECEIVED RECALL LETTER IN SEPTEMBER. CONTACTED DEALER ON NOVEMBER 1, 1999. OWNER CALLED AGAIN AFTER ONE MONT. , AND AGAIN ON JANUARY 4, 2000. PARTS HAVE NOT BEEN SHIPPED FROM MANUFACTURER. ON JANUARY 28, 2000 DEALER INSTALLED RECALL ITEM. *AK
RECALL 99V131000 CONCERNING BRAKE BOOSTER FAILURE. DEALER HAS NO PARTS SINCE SEPTEMBER, 1999. *AK
RECALL 99V131000, BRAKE BOOSTER: RECALL, WHICH DEALER FRED LAVERY AUDI PORSCHE, 34602 WOODWARD AVENUE, BIRMINGHAM, MI PHONE # 2486455930, CLAIMED HAD NO PARTS AVAILABLE SINCE OCTOBER.COLD SEASON IS COMING UP WHICH COULD CAUSE THE BRAKE BOOSTER TO MALFUNCTION AND CAUSE A CRASH. *AK
BRAKES DO NOT WORK IN WET CONDITIONS!
BRAKES DO NOT "GRAB" IN THE WET/RAIN. THERE APPEARS TO BE A ONE TO TWO SECOND DELAY BETWEEN STEPPING ON THE BRAKES AND THE CAR SLOWING DONE. I HAVE NOTICED THIS SAME DELAY, IN DRY WEATHER, AT HIGHWAY SPEEDS OF 50-60 MPH.
IN HEAVY RAIN OR AFTER WASHING CAR BRAKES DO NOT WORK FOR ABOUT 1-2 SECONDS AFTER APPLICATION. IT IS VERY SCARY AND DANGEROUS IMO.
RECALL 99V131000; BRAKE BOOSTER RECALL. DEALER NEEDS TO INSTALL A VACUUM BY-PASS SYSTEM SO THE BRAKING SYSTEM WONT MALFUNCTION. DEALER WON'T SET AN APPOINTMENT UNTIL APRIL 2000, AND VEHICLE IS EXPERIENCING BRAKING PROBLEMS WHICH MAY RESULT IN A CRASH. DEALER CONTACTED, FRAY AUDI, GREENWICH, CT 203-661-1800. PLEASE PROVIDE …
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RECALL 99V131000; BRAKE BOOSTER RECALL. DEALER NEEDS TO INSTALL A VACUUM BY-PASS SYSTEM SO THE BRAKING SYSTEM WONT MALFUNCTION. DEALER WON'T SET AN APPOINTMENT UNTIL APRIL 2000, AND VEHICLE IS EXPERIENCING BRAKING PROBLEMS WHICH MAY RESULT IN A CRASH. DEALER CONTACTED, FRAY AUDI, GREENWICH, CT 203-661-1800. PLEASE PROVIDE FURTHER INFORMATION. *AK
BRAKES FAILED TO WORK ON HIGHWAY OFF-RAMP DURING HEAVY RAIN. DEPRESSED PEDAL, BUT ALMOST NO BRAKING FORCE. HAD TO VEER BACK INTO INTERSTATE TRAFFIC, ALMOST CAUSING MAJOR CRASH. THIS HAS HAPPENED BEFORE TO ME, ALWAYS IN WET WEATHER. PROBLEM IS INTERMITTENT. USUALLY BRAKES ARE OK IN WET, BUT NOW AND THEN ALMOST COMPLETE FAILURE FO…
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BRAKES FAILED TO WORK ON HIGHWAY OFF-RAMP DURING HEAVY RAIN. DEPRESSED PEDAL, BUT ALMOST NO BRAKING FORCE. HAD TO VEER BACK INTO INTERSTATE TRAFFIC, ALMOST CAUSING MAJOR CRASH. THIS HAS HAPPENED BEFORE TO ME, ALWAYS IN WET WEATHER. PROBLEM IS INTERMITTENT. USUALLY BRAKES ARE OK IN WET, BUT NOW AND THEN ALMOST COMPLETE FAILURE FOR NO APPARENT REASON, ALWAYS IN WET. BRAKES RETURN AFTER BRIEF APPLICATION. I BELIEVE BRAKES ARE GETTING WET SOMEHOW AND FAILING TO OPERATE UNTIL THEY WARM UP AND DRY OFF, BUT THIS IS JUST A THEORY. THE FAILURES ARE INFREQUENT BUT VERY DRAMATIC AND EXTREMELY DANGEROUS. OTHER AUDI A4 OWNERS HAVE EXPERIENCED EXACT SAME PROBLEM. DEALERS HAVE NO SOLUTION. PLEASE HELP! THANKS.
Official recalls
422V471000 · Air Bags:frontal:driver Side:inflator Module
Jul 1, 2022
Volkswagen Group of America, Inc. (Audi) is recalling certain 1998 Audi A8 and 1997-1998 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 inflator may absorb moisture, causing the inflator to explode or the air bag cushion to underinflate.
Consequence & remedy
Consequence: The inflator could explode during air bag deployment, resulting in metal fragments striking the driver or other occupants. An underinflated air bag may not properly protect the occupant. These scenarios increase the risk of serious injury or death.
Remedy: Dealers will replace the driver's air bag inflator with an alternative inflator of a different design, free of charge. Owner notification letters were sent September 21, 2021. Owners may contact Audi customer service at 1-800-253-2834. Audi's number for this recall is 69BT. The vehicles in this recall were mistakenly omitted from recall 20V-056. All vehicle owners have already been notified by mail and informed that the remedy is available.
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.
98V134000 · Engine And Engine Cooling:cooling System
Jun 22, 1998
VEHICLE DESCRIPTION: PASSENGER VEHICLES. IF THE ENGINE BACKFIRES DURING A COLD-START, AN AIR SCREEN WHICH IS LOOSELY SEATED IN THE AIR FLOW METER CAN BECOME DAMAGED.
Consequence & remedy
Consequence: SCREEN PIECES COULD ENTER THE INTAKE AIR FLOW SYSTEM AND PREVENT THE THROTTLE PLATE FROM RETURNING TO ITS FULL IDLE POSITION.
Remedy: DEALERS WILL INSTALL A RETAINING RING TO HOLD THE AIR SCREEN IN PLACE.
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