Problems · NHTSA complaints
2003 Audi A4 problems
Owners filed 215 complaints about the 2003 Audi A4 with NHTSA between Feb 2003 and Oct 2024. The most-cited component is power train (44).
Complaints
215
Filed with NHTSA
Crashes
10
Reported by owners
Fires
6
Reported by owners
Injuries
12
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Power train44
- Fuel system, gasoline41
- Electrical system32
- Exterior lighting24
- Vehicle speed control22
- Visibility19
- Engine and engine cooling18
- Structure14
- Air bags12
- Equipment8
- Tires8
- Steering8
- Engine7
- Fuel/propulsion system7
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
10
14
16
18
24
28
16
26
12
12
6
6
5
3
3
5
2
2
1
4
1
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2003 | 10 |
| 2004 | 14 |
| 2005 | 16 |
| 2006 | 18 |
| 2007 | 24 |
| 2008 | 28 |
| 2009 | 16 |
| 2010 | 26 |
| 2011 | 12 |
| 2012 | 12 |
| 2013 | 6 |
| 2014 | 6 |
| 2015 | 5 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 5 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 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
Power train
44 reports
“2003 AUDI A4 3.0 CABRIOLET CONVERTIBLE STARTED SHIFTING ROUGH AND HESITANT AND SHUT OFF, CRANKED BACK UP WENT INTO LIMP MODE AND ALL THE SHIFTING GEAR LIGHTS CAME ON R N D 2 , BARELY MADE IT BACK HOME, PUT CODE READER ON CAR HAD A LOT OF CODES ON IT I RESET CODES BUT RND2 LIGHTS STILL ON , POSSIBLE BAD TCM?”
Fuel system, gasoline
41 reports1 fire2 related recalls
“The contact owns a 2003 Audi A4. The contact stated that while driving at an undisclosed speed, a fuel odor was detected. The contact parked the vehicle and noticed there was fuel leaking on the rear driver's side. The vehicle was taken to the dealer and diagnosed that the fuel pump flange and hoses needed to be replaced. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure and informed the contact that they would cover the part replacement. The failure mileage was 143,839.”
Electrical system
32 reports4 fires
“Radio intermediate goes out hitting bumps speedometer stopped working the number ninth digit is not pulling up when I search vehicle information Replaced engine vehicle only had 20,000 miles”
Exterior lighting
24 reports1 related recall
“I BOUGHT THE VEHICLE LAST YEAR WHEN IT HAD 78,000 MILES ON IT. ONLY 4 MONTHS AFTER HAVING PURCHASED THE CAR, I GOT A MESSAGE ON THE TROUBLE LIGHT WARNING SYSTEM THAT I HAD A "DIPPED LIGHT". I HAD TO GOOGLE OTHER AUDI OWNERS TO FIND OUT WHAT A DIPPED LIGHT WAS, AS I NEVER HEARD OF A BURNED OUT HEADLIGHT TERMED AS A "DIPPED LIGHT" BEFORE. I CAN ONLY DRIVE IT DURING THE DAY NOW, AS I HAVE HEARD IN CAR FORUMS THAT FIXING IT CAN BE QUITE A LONG AND EXPENSIVE PROCESS. I AM AFRAID THAT IT MAY AFFECT MY DRIVING SAFETY EVEN WHEN DRIVING DURING THE DAY, BECAUSE IN FLORIDA WE HAVE A LOT OF STORMY WEATHER DURING THE RAINY SEASON AND THE SKY GETS VERY DARK RIGHT BEFORE THE STORMS COME IN. I AM ALSO CONCERNED THAT OTHER MOTORISTS CANNOT SEE ME COMING IN BAD WEATHER AND I HAD A NEAR ACCIDENT TODAY, WHEN ANOTHER MOTORIST CAME FLYING OUT OF A PARKING LOT IN FRONT OF ME AS I WAS DRIVING DOWN THE ROAD, AND I HAD TO SLAM ON MY BRAKES TO AVOID A COLLISION WITH THEIR VEHICLE.”
Vehicle speed control
22 reports1 crash
“ON JANUARY 28, 2019 I WAS DRIVING TO MY MEDICAL APPOINTMENT AT 35 MILES PER HOUR WHEN MY CAR FROZE UP THEN BUCKED AND NOW NO LONGER THE TRANSMISSION WILL NO LONGER ENGAGE. UPON RESEARCH AUDI HAS KNOWN OF THIS TRANSMISSION HAVING SERIOUS FAULTS AND THAT IT WILL BREAK DOWN WITHOUT WARNING. AUDI HAS REFUSED TO DO ANY RECALL ON THESE TRANSMISSIONS, EVEN AFTER A CLASS ACTION THAT WAS SETTLED, AUDI WILL NOT DO ANY RECALL.”
Visibility
19 reports
“WHEN I PURCHASED MY PRE-OWNED 03 AUDI A4 CABRIO IN MAY 2010 FAILED TO NOTICE THAT THE BOTTOM LEFT AND RIGHT CORNERS OF THE REAR WINDOW WAS SEPARATING FROM THE FABRIC AT THE TOP. FAST FORWARD TO MAY 2011 ITS NOW SPREAD ENOUGH THAT YOU COULD REACH A WHOLE HAND INTO THE HEADLINER. WHEN IT RAINS PART OF THE BACK SEAT,REAR DECK AND AREAS OF THE TRUNK GET VERY WET WAS SEPARATING FROM THE FABRIC AT THE BOTTOM LEFT AND RIGHT CORNERS OF THE REAR WINDOW, ENOUGH THAT YOU COULD REACH A WHOLE HAND INTO THE HEADLINER. WHEN IT RAINS THE HEADLINER AROUND THE REAR GLASS, PART OF THE BACK SEAT,REAR DECK AND AREAS OF THE TRUNK GET VERY WET. WITH THE SMELL AFTER IT DRIES, IM SURE I HAVE MOLD AND MILDEW ISSUES AS WELL. *TR”
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.