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2003 Audi A4

Owner reports · Recalls · Investigations

More warning signs than most A4 years

Owner complaints for the 2003 Audi A4 are substantially higher than the model-year median of 76.5.

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When problems were reported

Mileage at the reported incident

177 reports with mileage · 33 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.

  • Power Train. Review the 43 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Fuel System, Gasoline. Review the 41 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 32 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

10 crash reports6 fire reports8 injury reports

Vehicle Speed Control complaints

22 reports
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63,000 miles · Jul 28, 2010
Vehicle Speed Control

WHILE DRIVING MY 2003 AUDI A4 ON THE MASS PIKE FREEWAY INTO BOSON, AS I APPROACHED A TOLL BOOTH, I TAPPED THE BREAK TO DISENGAGE THE CRUISE CONTROL. THE CAR SLOWED DOWN SO THAT I PASSED THROUGH THE TOLL BOTH AT APPROXIMATELY 18 MPH. AFTER PASSING THROUGH THE TOLL BOOTH, I AGAIN STARTED TO ACCELERATE, BUT ONCE TOUCHING THE GAS …

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WHILE DRIVING MY 2003 AUDI A4 ON THE MASS PIKE FREEWAY INTO BOSON, AS I APPROACHED A TOLL BOOTH, I TAPPED THE BREAK TO DISENGAGE THE CRUISE CONTROL. THE CAR SLOWED DOWN SO THAT I PASSED THROUGH THE TOLL BOTH AT APPROXIMATELY 18 MPH. AFTER PASSING THROUGH THE TOLL BOOTH, I AGAIN STARTED TO ACCELERATE, BUT ONCE TOUCHING THE GAS PEDAL, IT SEEMED TO GO DOWN ON ITS OWN, AND THE CAR ACCELERATED, NOT UNDER MY CONTROL. I IMMEDIATELY STEPPED ON THE BRAKES TO SLOW THE ACCELERATION, BUT AS SOON AS I TOOK MY FOOT OFF THE BRAKES, THE CAR CONTINUED TO ACCELERATE TO ABOUT 60 MPH, AT WHICH POINT I APPLIED THE BREAKS AGAIN. LUCKILY, TRAFFIC WAS MINIMAL, AND I WAS ABLE TO KEEP CONSTANT PRESSURE ON THE BRAKE PEDAL TO KEEP THE CAR SPEED DOWN, AND AVOID OTHER VEHICLES WHILE THE BRAKES AND ACCELERATOR WORKED AGAINST EACH OTHER. INITIALLY, THERE WAS NOWHERE TO PULL THE CAR OFF THE ROAD, BUT THEN AS I APPROACHED A SMALL PULLOUT, I MOVED THE CAR INTO THE OUTSIDE LANE AND TURNED OFF THE ENGINE. I THOUGHT MAYBE THE CRUISE CONTROL HAD MALFUNCTIONED, AND BY TURNING OFF THE CAR, IT WOULD BE RESET. SO AFTER SETTING SEVERAL MINUTES, WITH THE CAR IN PARK, I TRIED STARTING THE CAR. THE ENGINE IMMEDIATELY REVVED UP TO FULL SPEED, SO I AGAIN TURNED THE CAR OFF. AFTER SETTING ANOTHER 10 MINUTES, I TRIED STARTING THE CAR AGAIN, AND IT STARTED NORMALLY. I WAS ABLE TO DRIVE THE CAR HOME WITHOUT EXPERIENCING ANY ADDITIONAL ACCELERATION ISSUES. AUDI LOOKED AT THE CAR AND DETERMINED IT WAS A FAULTY BRAKE SWITCH THAT PREVENTED THE CRUISE CONTROL FROM DISENGAGING. HOWEVER, THE CRUISE CONTROL WAS NOT ACTIVE WHEN THE UNCONTROLLED ACCELERATION OCCURRED, AND THEIR OWN MECHANIC SAID THE FAULTY SWITCH WOULD NOT EXPLAIN THE FULL THROTTLE ENGINE START AFTER SHUTTING OFF THE ENGINE. THEY SAID THEY REPLACED THE BRAKE SWITCH BUT WILL TAKE NO FURTHER ACTION. BASED ON THE AUDI MECHANICS COMMENTS, I DO NOT FEEL THE ISSUE HAS BEEN RESOLVED. *TR

NHTSA ODI #10345931

75,000 miles · May 22, 2010
Vehicle Speed Control

SUDDEN ACCELERATION. I WAS COMING BACK FROM THE STORE, AND TWICE I STEPPED ON THE GAS AND THE PEDAL WENT TO THE FLOOR ON ITS OWN! I HIT THE BRAKE AND KEPT THE CAR FROM RUNNING AWAY WHILE I PULLED THE PEDAL UP WITH MY OTHER FOOT. WHEN I GOT BACK HOME, I PUT IT IN NEUTRAL, GAVE IT A LITTLE GAS, AND IT WENT INTO FULL ACCELERATION. …

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SUDDEN ACCELERATION. I WAS COMING BACK FROM THE STORE, AND TWICE I STEPPED ON THE GAS AND THE PEDAL WENT TO THE FLOOR ON ITS OWN! I HIT THE BRAKE AND KEPT THE CAR FROM RUNNING AWAY WHILE I PULLED THE PEDAL UP WITH MY OTHER FOOT. WHEN I GOT BACK HOME, I PUT IT IN NEUTRAL, GAVE IT A LITTLE GAS, AND IT WENT INTO FULL ACCELERATION. I COULD FEEL THE GAS PEDAL PULL AWAY FROM MY FOOT AND GO TO THE FLOOR. I HAD TO TURN THE KEY OFF TO STOP IT. IT WAS NOT "FLOOR MATS" OR DRIVER ERROR. THE NEXT DAY, THE PROBLEM WAS GONE. I DROVE TO THE AUDI DEALER. THEY REPLACED THE GAS PEDAL ASSEMBLY AND THE PROBLEM APPEARS TO BE FIXED. *TR

NHTSA ODI #10331707

Mileage unknown · Apr 5, 2010
Vehicle Speed Control

SUDDEN, UNINTENDED ACCELERATION OF 2003 AUDI A4 WHILE IN 4TH GEAR. RPMS SPIKED AND REMAINED AT 7 AFTER FOOT WAS REMOVED FROM ACCELERATOR. EXPERIENCED LOSS OF CONTROL OF STEERING. WAS EVENTUALLY ABLE TO SLOW AND STOP CAR VIA BRAKES. AFTER COMPLETELY SHUTTING CAR OFF AND REMOVING KEY, CAR WAS RESTARTED AND ENGINE REVVED UP TO …

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SUDDEN, UNINTENDED ACCELERATION OF 2003 AUDI A4 WHILE IN 4TH GEAR. RPMS SPIKED AND REMAINED AT 7 AFTER FOOT WAS REMOVED FROM ACCELERATOR. EXPERIENCED LOSS OF CONTROL OF STEERING. WAS EVENTUALLY ABLE TO SLOW AND STOP CAR VIA BRAKES. AFTER COMPLETELY SHUTTING CAR OFF AND REMOVING KEY, CAR WAS RESTARTED AND ENGINE REVVED UP TO 7 RPMS WITH ZERO ACCELERATION. OCCURRED ON QUEENSBOROUGH BRIDGE - POLICE WERE CALLED TO ASSIST. *TR

NHTSA ODI #10323721

49,000 miles · Oct 8, 2009
Vehicle Speed Control

TL* THE CONTACT OWNS 2003 AUDI A4. WHILE APPROACHING A TRAFFIC LIGHT AT 20 MPH THE VEHICLE ACCELERATED WITHOUT INTENTION. AS A CONSEQUENCE SHE REAR-ENDED ANOTHER VEHICLE. THE FRONT-END OF THE VEHICLE WAS DAMAGED. THE VEHICLE WAS IN THE PROCESS OF BEING TOWED TO AN AUTHORIZED DEALER. THE FAILURE AND CURRENT MILEAGES WERE 49,…

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TL* THE CONTACT OWNS 2003 AUDI A4. WHILE APPROACHING A TRAFFIC LIGHT AT 20 MPH THE VEHICLE ACCELERATED WITHOUT INTENTION. AS A CONSEQUENCE SHE REAR-ENDED ANOTHER VEHICLE. THE FRONT-END OF THE VEHICLE WAS DAMAGED. THE VEHICLE WAS IN THE PROCESS OF BEING TOWED TO AN AUTHORIZED DEALER. THE FAILURE AND CURRENT MILEAGES WERE 49,000.

NHTSA ODI #10286773

71,000 miles · Sep 19, 2009
Vehicle Speed Control

MY 2003 AUDI A4 ON TWO DIFFERENT OCCASIONS HAS STARTED TO ACCELERATE TO HIGH SPEEDS ON IT'S OWN. THE FIRST TIME IT HAPPENED I WAS PULLING OUT AND I PUSHED THE GAS AND IT JUST STARTED TO PICK UP SPEED I PULLED OVER AND THEN TRIED TO PULL OUT AGAIN AND IT STARTED AGAIN TO PICK UP SPEED I NOTICED THE CRUISE CONTROL WAS ON AND SO I …

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MY 2003 AUDI A4 ON TWO DIFFERENT OCCASIONS HAS STARTED TO ACCELERATE TO HIGH SPEEDS ON IT'S OWN. THE FIRST TIME IT HAPPENED I WAS PULLING OUT AND I PUSHED THE GAS AND IT JUST STARTED TO PICK UP SPEED I PULLED OVER AND THEN TRIED TO PULL OUT AGAIN AND IT STARTED AGAIN TO PICK UP SPEED I NOTICED THE CRUISE CONTROL WAS ON AND SO I TURNED IT OFF AND THEN IT WAS FINE. THE SECOND TIME I WAS PULLING OUT AND PUSHED THE GAS TO SPEED UP AND AGAIN IT STARTED TO ACCELERATE VERY FAST AND SO I PULLED OVER AGAIN AND THOUGHT I MUST OF HIT IT INTO SPEED CONTROL AGAIN, BUT THIS TIME WITH CRUISE CONTROL OFF IT STILL CONTINUED TO ACCELERATE AND IT WAS HARDER TO GET THE CAR TO STOP I HAD TO PUSH THE BRAKE PEDAL REALLY HARD AND I THOUGHT IT WASN'T GOING TO STOP. THEN WHEN I DID GET IT TO A COMPLETE STOP I PUT THE CAR IN PARK AND THE ENGINE CONTINUED TO REV, AS IF I WERE PUSHING THE GAS PEDAL. THIS COULD HAVE EASILY RESULTED IN A CRASH. IF IT WERE IN THE WINTER MONTHS I WOULD HAVE CRASHED, AND I HAD MY ONE YEAR OLD BOY WITH ME THIS WAS VERY FRIGHTENING FOR BOTH OF US. *TR

NHTSA ODI #10284578

55,935 miles · Dec 3, 2007
Vehicle Speed Control

AS I WAS DRIVING ON THE HIGHWAY AND ACCELERATED TO ABOUT 65 MPH, THE GAS PEDAL WOULD LIFT SLIGHTLY AWAY FROM MY FOOT (LIKE I JUST TURNED ON CRUISE CONTROL, BUT I HAD NOT TOUCHED THE CRUISE AT ALL) AND WHEN I LIFTED MY FOOT COMPLETELY AWAY FROM THE PEDAL, IT WOULD STAY STEADY AT 65 MPH. I BRAKED TO SLOW THE CAR DOWN, AND THE CAR…

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AS I WAS DRIVING ON THE HIGHWAY AND ACCELERATED TO ABOUT 65 MPH, THE GAS PEDAL WOULD LIFT SLIGHTLY AWAY FROM MY FOOT (LIKE I JUST TURNED ON CRUISE CONTROL, BUT I HAD NOT TOUCHED THE CRUISE AT ALL) AND WHEN I LIFTED MY FOOT COMPLETELY AWAY FROM THE PEDAL, IT WOULD STAY STEADY AT 65 MPH. I BRAKED TO SLOW THE CAR DOWN, AND THE CAR WOULD SLOW AS LONG AS MY FOOT WAS ON THE BRAKE, BUT ONCE I LET OFF THE BRAKE, THE CAR WOULD MAINTAIN THE LOWERED SPEED. THIS HAPPENED SEVERAL TIMES AND I FELT THAT I HAD LITTLE CONTROL OVER THE ACCELERATION/DECELERATION OF THE CAR. AT ONE POINT, I SLOWED THE CAR DOWN COMPLETELY TO A STOP AND HAD MY FOOT ON THE BRAKE, THE CAR WAS STILL IN DRIVE AND THOUGH MY FOOT WAS ON THE BRAKE, THE RPM'S WERE STILL AROUND 2000. I IMMEDIATELY PUT THE CAR INTO PARK AND THE TACH REVVED UP TO BETWEEN 4500 - 5000 RPM, AS IF THE GAS HAD BEEN PUSHED. I TAPPED MY FOOT ON THE GAS A FEW TIMES LIGHTLY AND THE GAS PEDAL SEEMED TO COME UNSTUCK AND THE CAR WENT BACK TO IDLE RPM'S (<1000). I TURNED THE CAR OFF AND PUMPED THE GAS PEDAL A FEW TIMES, THEN CAUTIOUSLY DROVE HOME. *TR

NHTSA ODI #10210646

60 miles · Apr 10, 2007
Vehicle Speed Control

I ACCELERATED ON THE HIGHWAY TO PASS A VEHICLE AND TO TAKE THE UPCOMING HIGHWAY EXIT. THE ACCELERATOR APPEARED TO BE DEPRESSED TO THE FLOOR AND WAS STUCK FOR A PERIOD OF TIME. THE VEHICLE WAS OUT OF CONTROL, AND I PUMPED THE BRAKES SEVERAL TIMES TO FINALLY SLOW DOWN THE VEHICLE. *AK

NHTSA ODI #10187421

35,000 miles · May 30, 2006
Vehicle Speed Control

ON TWO OCCASIONS BETWEEN JANUARY 2006 AND MAY 2006, AFTER FULLY STEPPING ON AND SUBSEQUENTLY RELEASING THE ACCELERATOR PEDAL, THE CAR CONTINUED TO ACCELERATE AS IF THE ACCELERATOR WAS STUCK TO THE FLOOR. I THEN QUICKLY PRESSED ON AND RELEASED THE ACCELERATOR THREE OR FOUR TIMES BEFORE THE THROTTLE FINALLY LET UP AND THE CAR STO…

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ON TWO OCCASIONS BETWEEN JANUARY 2006 AND MAY 2006, AFTER FULLY STEPPING ON AND SUBSEQUENTLY RELEASING THE ACCELERATOR PEDAL, THE CAR CONTINUED TO ACCELERATE AS IF THE ACCELERATOR WAS STUCK TO THE FLOOR. I THEN QUICKLY PRESSED ON AND RELEASED THE ACCELERATOR THREE OR FOUR TIMES BEFORE THE THROTTLE FINALLY LET UP AND THE CAR STOPPED ACCELERATING. AFTER BOTH OCCASIONS, I CHECKED THE FLOOR MAT AND IT WAS SECURED TO THE FLOOR AND AWAY FROM THE ACCELERATOR PEDAL. *JB

NHTSA ODI #10158542

63,000 miles · Feb 28, 2006
Vehicle Speed Control

UNDER HARD ACCELERATION, THE THROTTLE ON MY 2003 AUDI A4 BECAME STUCK WIDE OPEN FOR APPROXIMATELY 15 SECONDS. IN ORDER TO STOP THE CAR, I NEEDED TO TURN OFF THE IGNITION. I WAS ABLE TO REPRODUCE THE PROBLEM WITH THE CAR IN NEUTRAL, AND THE THROTTLE SEEMS TO PERSISTENTLY STICK WHEN THE ENGINE REVS OVER 5000 RPM. I'M PLANNING ON …

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UNDER HARD ACCELERATION, THE THROTTLE ON MY 2003 AUDI A4 BECAME STUCK WIDE OPEN FOR APPROXIMATELY 15 SECONDS. IN ORDER TO STOP THE CAR, I NEEDED TO TURN OFF THE IGNITION. I WAS ABLE TO REPRODUCE THE PROBLEM WITH THE CAR IN NEUTRAL, AND THE THROTTLE SEEMS TO PERSISTENTLY STICK WHEN THE ENGINE REVS OVER 5000 RPM. I'M PLANNING ON TAKING THIS CAR TO AN AUDI DEALER TOMORROW TO HAVE THE PROBLEM DIAGNOSED FURTHER. *JB

NHTSA ODI #10151479

13,500 miles · Jul 13, 2005
Vehicle Speed Control

ON JULY 2, 2005, AT APPROXIMATELY 11:00 A.M., I WAS DRIVING WITH MY TWO CHILDREN (AGES 7 AND 9) NORTH ON INTERSTATE 5 NEAR LAJOLLA, CA. I WAS TRAVELING AT APPROXIMATELY 70-75 MILES PER HOUR. SUDDENLY, MY CAR BEGAN TO ACCELERATE. THINKING THAT THE CRUISE CONTROL HAD ENGAGED, I STEPPED ON THE BRAKE TO DISENGAGE IT. ALTHOUGH MY…

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ON JULY 2, 2005, AT APPROXIMATELY 11:00 A.M., I WAS DRIVING WITH MY TWO CHILDREN (AGES 7 AND 9) NORTH ON INTERSTATE 5 NEAR LAJOLLA, CA. I WAS TRAVELING AT APPROXIMATELY 70-75 MILES PER HOUR. SUDDENLY, MY CAR BEGAN TO ACCELERATE. THINKING THAT THE CRUISE CONTROL HAD ENGAGED, I STEPPED ON THE BRAKE TO DISENGAGE IT. ALTHOUGH MY CAR SLOWED A SMALL AMOUNT, THE ENGINE CONTINUED TO REV HIGHER. I THEN TOOK MY FOOT OFF THE BRAKE (FEARING THAT MY BRAKES WOULD WEAR OUT AND WERE NOT VERY EFFECTIVE IN ANY EVENT), AND THE CAR ACCLERATED AGAIN. I SUCCEEDED IN MOVING TOWARD THE SHOULDER, PUT THE CAR IN NEUTRAL, AND APPLIED THE BRAKE. WHILE THIS SUCCEEDED IN STOPPING THE CAR, THE ENGINE CONTINUED TO REV UP AS I WAS STOPPED IN THE EMERGENCY LANE. WITH MY LEFT FOOT ON THE BRAKE, I USED MY RIGHT FOOT TO STEP ON THE ACCELERATOR IN AN EFFORT TO DISENGAGE IT. AFTER APPROXIMATELY A MINUTE, THE ACCELERATOR DISENGAGED, AND THE ENGINE REV'D DOWN. AFTER THE INCIDENT, I DROVE THE CAR HOME AT A SIGNIFICANTLY SLOWER SPEED, AND THE PROBLEM DID NOT RECUR. ON TUESDAY, JULY 5, I CALLED MIRAMAR AUDI AND REPORTED THE PROBLEM TO BEN BOSWELL. HE ASKED ME WHEN AND WHERE THE INCIDENT TOOK PLACE, AND WHETHER THERE WAS ANY CONSTRUCTION IN THE AREA. HE EXPLAINED THAT AUDI NORTH AMERICA HAD INSTRUCTED HIM TO ASK THIS QUESTION, BECAUSE THEY HAD RECEIVED OTHER COMPLAINTS OF AUDI A4S WITH THE SAME PROBLEM. (THERE WAS NO CONSTRUCTION). HE ALSO TOLD ME THAT HE HAD 4 OR 5 A4S IN THE SHOP WITH THE SAME COMPLAINT. MY CAR WAS AT MIRAMAR AUDI FROM JULY 5 UNTIL JULY 13. ON MONDAY, JULY 11, MR. BOSWELL TOLD ME THAT THEY HAD RUN A COMPUTER DIAGNOSTIC ON MY CAR, AND COULD NOT FIND ANY PROBLEM. HE ALSO TOLD ME THAT HE HAD HAD EXTENSIVE COMMUNICATIONS WITH AUDI NORTH AMERICA, AND THAT HE HAD BEEN TOLD TO RELEASE THE CAR TO ME. AFTER SEVERAL CONTACTS WITH AUDI NORTH AMERICA (WHICH I CAN PROVIDE IN DETAIL), I WAS TOLD THAT THE PROBLEM WAS MOST LIKELY CAUSED BY MY FLOORMAT BEING OUT OF POSITION.

NHTSA ODI #10128662

Official recalls

3

07V375000 · Fuel System, Gasoline:delivery:fuel Pump

Aug 28, 2007

ON CERTAIN VEHICLES EQUIPPED WITH 1.8L TURBO, 2.8L V6, OR 3.0L ENGINES, A CHANGE IN THE ELECTRICAL MOTOR COMPONENTS IN THE FUEL PUMP CAN LEAD TO AN INOPERATIVE FUEL PUMP AND, ULTIMATELY, STOPPAGE OF FUEL SUPPLY TO THE ENGINE CAUSING IT TO STALL.

Consequence & remedy

Consequence: IF FUEL FLOW TO THE ENGINE IS INTERRUPTED, THE VEHICLE COULD STALL WITHOUT WARNING AND THUS PRESENT A POTENTIAL RISK OF CRASH.

Remedy: DEALERS WILL INSTALL NEW FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 28, 20007. OWNERS MAY CONTACT VW AT 1-800-222-8987 OR AUDI AT 1-800-822-2834. THIS RECALL IS A SUPPLEMENT TO A PREVIOUS CAMPAIGN (PLEASE SEE 06V017).

06V017000 · Fuel System, Gasoline:delivery:fuel Pump

Jan 23, 2006

ON CERTAIN VEHICLES PRODUCED FROM SEPTEMBER 2002 - MARCH 2003, EQUIPPED WITH 1.8L TURBO, 2.8L V6, OR 3.0L ENGINES, A CHANGE IN THE ELECTRICAL MOTOR COMPONENTS IN THE FUEL PUMP CAN LEAD TO AN INOPERATIVE FUEL PUMP AND, ULTIMATELY, STOPPAGE OF FUEL SUPPLY TO THE ENGINE CAUSING IT TO STALL.

Consequence & remedy

Consequence: IF FUEL FLOW TO THE ENGINE IS INTERRUPTED, THE VEHICLE COULD STALL WITHOUT WARNING AND THUS PRESENT A POTENTIAL RISK OF CRASH.

Remedy: DEALERS WILL INSTALL NEW FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON APRIL 10, 2006. OWNERS MAY CONTACT VW AT 1-800-222-8987 OR AUDI AT 1-800-822-2834.

05V096000 · Exterior Lighting:headlights

Mar 15, 2005

ON CERTAIN PASSENGER VEHICLES, THERE IS A POSSIBILITY OF XENON HEADLAMP COATING DEGRADATION OVER TIME. THE LUMINOUS TRANSMITTANCE OF THE HEADLAMP MAY DECREASE OVER A PERIOD OF TIME.

Consequence & remedy

Consequence: THIS CONDITION COULD AFFECT A DRIVER'S FIELD OF VIEW, INCREASING THE RISK OF A CRASH.

Remedy: DEALERS WILL REPLACE THE LEFT AND RIGHT XENON HEADLAMP REFLECTORS FREE OF CHARGE. THE RECALL BEGAN ON APRIL 11, 2005. OWNERS MAY CONTACT AUDI AT 1-800-822-2834.

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

0

No exact-year investigations in this snapshot.