Problems · NHTSA complaints
1998 Audi A4 problems
Owners filed 258 complaints about the 1998 Audi A4 with NHTSA between Aug 1997 and Jan 2022. The most-cited component is service brakes, hydraulic (111).
Complaints
258
Filed with NHTSA
Crashes
6
Reported by owners
Fires
2
Reported by owners
Injuries
11
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Service brakes, hydraulic111
- Engine and engine cooling28
- Suspension24
- Electrical system23
- Steering23
- Air bags16
- Vehicle speed control12
- Service brakes, air10
- Visibility8
- Power train7
- Exterior lighting5
- Seats5
- Equipment3
- Structure3
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 28, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
2
5
31
50
22
17
19
37
36
12
0
6
4
4
3
3
0
0
0
1
2
0
0
0
3
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 1997 | 2 |
| 1998 | 5 |
| 1999 | 31 |
| 2000 | 50 |
| 2001 | 22 |
| 2002 | 17 |
| 2003 | 19 |
| 2004 | 37 |
| 2005 | 36 |
| 2006 | 12 |
| 2007 | 0 |
| 2008 | 6 |
| 2009 | 4 |
| 2010 | 4 |
| 2011 | 3 |
| 2012 | 3 |
| 2013 | 0 |
| 2014 | 0 |
| 2015 | 0 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 3 |
| 2022 | 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
111 reports2 crashes1 related recall
“THE ANTI LOCK BRAKE CONTROL MODULATOR UNIT FAILED, AND NOW I HAVE BRAKES THAT DO NOT WORK. AT THE SLIGHTEST PEDAL PRESSURE, ALL 4 WHEELS WILL HAVE A STRONG PULSATING, GIVING YOU ABOUT 1/3 OF THE BRAKING PRESSURE THAT IS NEEDED. VOLKSWAGENS USED A NEARLY IDENTICAL PART, AND THEIR ABS CONTROLLER IS UNDER RECALL, I DO NOT UNDERSTAND WHY NHTSA, CANNOT FORCE AUDI OF AMERICA TO DO THE SAME. THANK YOU *TR”
Engine and engine cooling
28 reports1 related recall
“TL* THE CONTACT OWNS A 1998 AUDI A4. WHILE DRIVING 45 MPH THE ENGINE STALLED WITHOUT ANY PRIOR WARNINGS. THE VEHICLE WAS TOWED TO HER PLACE OF RESIDENCE. A MECHANIC STATED THAT THE TIMING CHAIN HAD FRACTURED WHICH CAUSED THE ENGINE TO STALL. SHE CONTACTED THE MANUFACTURER IN REFERENCE TO A CLASS ACTION LAWSUIT REGARDING TIMING CHAIN FAILURE. A REPRESENTATIVE STATED THAT BECAUSE THE VEHICLE EXCEEDED 70,000 MILES SHE WAS INELIGIBLE FOR A FREE REMEDY. HOWEVER SHE NOTED THAT THE OWNERS MANUAL STATED THAT THE TIMING CHAIN SHOULD BE REPLACED AT 90,000. SHE WAS IN THE PROCESS OF HAVING THE ENGINE REBUILT BY A INDEPENDENT TECHNICIAN. THE FAILURE AND CURRENT MILEAGES WERE 74,000.”
Suspension
24 reports
“CONTROL ARM ON MY 1998 AUDI A4 FRACTURED WHEN PULLING OUT OF A PARKING LOT, CAUSING COMPLETE LOSS OF STEERING CONTROL. AUDI TECHNICAL SERVICE BULLETIN NHTSA # 10016418, #11242004 COMPONENT DESCRIPTION: 22. SUSPENSION:FRONT:CONTROL ARM:LOWER ARM BULLETIN NUMBER: 11242004 BULLETIN DATE: NOV 2004 VEHICLE: 1,998 AUDI A4 SUMMARY: SERVICE ACTION JE CAMPAIGN-CHECK/REPLACE FRONT SUSPENSION LOWER CONTROL ARMS. AUDI HAS FOUND THAT IN RARE CASES, ONE OR BOTH FRONT SUSPENSION LOWER CONTROL ARMS ON AFFECTED VEHICLES CAN EXHIBIT WEAR, EVEN THOUGH THE DAMAGE TO THE RUBBER BO ( NHTSA ITEM NUMBER - 10016418 ). *TR”
Electrical system
23 reports1 fire
“TL* THE CONTACT OWNS A 1998 AUDI A4. THE CONTACT STATED THAT HE SMELLED A BURNING WIRE ODOR UPON STARTING THE VEHICLE. THE CONTACT ALSO STATED THAT THE WINDSHIELD WIPERS AND VARIOUS OTHER ELECTRICAL COMPONENTS WERE NOT FUNCTIONING. THE VEHICLE WAS NOT TAKEN TO HAVE THE FAILURE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED AND THE CONTACT WAS INFORMED THAT THE VEHICLE WAS NOT INCLUDED IN THE RECALL ASSOCIATED WITH NHTSA CAMPAIGN ID NUMBER 00V317000 (ELECTRICAL SYSTEM:IGNITION:SWITCH). THE FAILURE MILEAGE WAS 201,000.”
Steering
23 reports1 fire1 related recall
“TL*THE CONTACT OWNS A 1998 AUDI A4. WHILE APPLYING PRESSURE TO THE BRAKE PEDAL, THE CONTACT NOTICED THAT THE WHEELS ON THE VEHICLE APPEARED TO MOVE IN AN OUTWARD DIRECTION. ALSO, WHEN TURNING, SHE HEARD A LOUD GRINDING NOISE AND THE STEERING COLUMN BECAME DIFFICULT TO TURN. THE DEALER STATED THAT HER VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN ID NUMBER 99V248000 (STEERING:LINKAGES:ROD:RELAY:CONNECTING). THE VEHICLE IS CURRENTLY BEING REPAIRED. THE FAILURE MILEAGE WAS 92,000.”
Air bags
16 reports4 crashes1 related recall
“The contact owned a 1998 Audi A4. The contact stated that while driving at 35-40 MPH with his 12-year-old son sitting in the passenger seat, he crashed into another vehicle. The air bags failed to deploy. There were no warning lights illuminated. The contact did not sustain any injuries, however, his son sustained a broken rib and was transported to the hospital. A police report was filed. The vehicle was towed to a tow lot, where it was totaled. The contact recently received a recall notice for NHTSA Campaign Number: 20V056000 (AIR BAGS). The dealer and the manufacturer were not made aware of the failure. The approximate failure mileage was 80,000.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.