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2005 Audi S4

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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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

34 reports with mileage · 9 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.

  • Exterior Lighting. Review the 33 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 5 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

2 crash reports0 fire reports1 injury reports

Exterior Lighting complaints

33 reports
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50,000 miles · Sep 4, 2010
Exterior Lighting

I HAVE A 2005 AUDI S4 AND MY HEADLIGHTS FLICKER AND GO OUT WHILE DRIVING ALMOST EVERY TIME I HAVE THEM ON. SOMETIMES IT IS ONE AND SOMETIMES BOTH AND I GET A MESSAGE ON MY DASH BOARD THAT THE AFFECTED HEADLIGHT IS DIPPED. IF I TURN THE LIGHTS OFF THEN BACK ON THE AFFECTED HEADLIGHT WILL USUALLY COME BACK ON. SOMETIMES THAT DOESN…

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I HAVE A 2005 AUDI S4 AND MY HEADLIGHTS FLICKER AND GO OUT WHILE DRIVING ALMOST EVERY TIME I HAVE THEM ON. SOMETIMES IT IS ONE AND SOMETIMES BOTH AND I GET A MESSAGE ON MY DASH BOARD THAT THE AFFECTED HEADLIGHT IS DIPPED. IF I TURN THE LIGHTS OFF THEN BACK ON THE AFFECTED HEADLIGHT WILL USUALLY COME BACK ON. SOMETIMES THAT DOESN'T WORK AND THE CAR HAS TO BE TURNED OFF AND RESTARTED. HEADLIGHTS TURNING OFF WHILE DRIVING AT NIGHT IS A VERY DANGEROUS SITUATION. WHEN I BROUGHT IT TO THE ATTENTION OF THE AUDI DEALERSHIP THEY SAY THEY CAN'T DUPLICATE THE PROBLEM. *TR

NHTSA ODI #10353854

46,000 miles · Aug 14, 2010
Exterior Lighting

MY CAR IS A 2005.5 AUDI S4. WHEN I DRIVE AT NIGHT, THE HEADLIGHTS TURN OFF AT RANDOM. IT WILL SOMETIMES BE ONE, BUT TONIGHT BOTH WENT OUT. IT OCCURS EVERY NIGHT I DRIVE THE CAR. THE BULBS HAVE BEEN REPLACED, THE BALLASTS AND THE DEALER WAS UNABLE TO DUPLICATE. *TR

NHTSA ODI #10349379

42,000 miles · May 14, 2010
Exterior Lighting

FOLLOWING A COLD START, THE MAIN BEAM HEADLIGHT WILL FLICKER FOR APPROXIMATELY 5-10 SECONDS, THEN FULLY DISCHARGE. THIS WILL REPEAT FOR SEVERAL MINUTES, TYPICALLY RESULTING IN THE 'RIGHT HEADLIGHT DIPPED' WARNING ILLUMINATING ON THE DASH DISPLAY AND THE HEADLIGHT FAILING TO LIGHT. I THINK THIS POSES A SAFETY RISK AS THE PROBLE…

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FOLLOWING A COLD START, THE MAIN BEAM HEADLIGHT WILL FLICKER FOR APPROXIMATELY 5-10 SECONDS, THEN FULLY DISCHARGE. THIS WILL REPEAT FOR SEVERAL MINUTES, TYPICALLY RESULTING IN THE 'RIGHT HEADLIGHT DIPPED' WARNING ILLUMINATING ON THE DASH DISPLAY AND THE HEADLIGHT FAILING TO LIGHT. I THINK THIS POSES A SAFETY RISK AS THE PROBLEM IS CONSISTENT AND RISKS THE DRIVER'S NIGHT VISION. WHEN THE WEATHER IS COLD (<40 DEGREES F), THE PROBLEM IS MUCH MORE CONSISTENT AND PERSISTS EVEN AFTER THE ENGINE HAS WARMED. IN WARM WEATHER, THE PROBLEM SOMETIMES STOPS AFTER ~10 TO 15 MINUTES OF DRIVING, WHEN THE ENGINE HAS WARMED UP. *TR

NHTSA ODI #10330468

50,000 miles · Apr 20, 2010
Engine And Engine CoolingExterior LightingFuel System, Gasoline

FRONT HEADLIGHTS (BOTH SIDES) FLICKER(BLINK) BUT NOT ALL THE TIME. WHEN THEY FLICKER I TURN THEM OFF AND THEN TURN ON AGAIN, THEN THEY ARE FINE. BUT I AM WORRIED THAT IT MAY GO BAD DURING DRIVING CAUSING SAFETY ISSUES. ITS NOT THE BULB ISSUES AS ON-BOARD DIAGNOSTICS WOULDN'T DETECT THE PROBLEM. IT HAS HAPPENED SEVERAL TIMES OVE…

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FRONT HEADLIGHTS (BOTH SIDES) FLICKER(BLINK) BUT NOT ALL THE TIME. WHEN THEY FLICKER I TURN THEM OFF AND THEN TURN ON AGAIN, THEN THEY ARE FINE. BUT I AM WORRIED THAT IT MAY GO BAD DURING DRIVING CAUSING SAFETY ISSUES. ITS NOT THE BULB ISSUES AS ON-BOARD DIAGNOSTICS WOULDN'T DETECT THE PROBLEM. IT HAS HAPPENED SEVERAL TIMES OVER LAST COUPLE OF WEEKS. I TRIED FINDING SOLUTION ONLINE AND FOUND THIS FORUM HTTP://FORUMS.AUDIWORLD.COM/SHOWTHREAD.PHP?P=23809262. THIS TELLS ME THIS PROBLEM IS PART OF NOTORIOUS DESIGN BY AUDI OF AMERICA. MY CAR IS OUT OF WARRANTY AND AUDI WOULDN'T TAKE CARE OF IT AS THEY HAVE PROVIDED NO ASSISTANCE TO SORT OUT OTHER MECHANICAL ISSUES WITH MY CAR WHICH HAS ONLY 50000 MILES. THOSE ISSUES INCLUDE FAILING OF FUEL PUMPS, LEAKING OF TRANSMISSION FLUID AND MELTING OF GASKET COVER CAPS (MAIN) LEADING TO INCONVENIENCE AND FINANCIAL STRESS FOR US AND ON A CAR WHICH IS NOT EVEN 12 MONTHS OUT OF WARRANTY. I REQUEST YOU TO DO YOUR RESEARCH AND HOPE THEY DO A RECALL FOR THESE FAULTY HEADLIGHTS. *TR

NHTSA ODI #10326620

Mileage unknown · Mar 24, 2010
Exterior Lighting

IN THE RAIN/SNOW, CONDENSATION/LARGE WATER DROPLETS/WATER FORMS ON INSIDE OF HEADLIGHT LENS ASSEMBLY REDUCING EFFECTIVENESS OF HEADLIGHT AND REDUCE VISIBILITY IN POOR LIGHTING CONDITION (NIGHT/SNOW/RAIN). WAS TOLD BY AUDI USA/DEALERS THAT THERE IS A TSB FOR THIS PROBLEM BUT REFUSE TO FIX DEFECT UNDER CPO WARRANTY. WAS TOLD BY …

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IN THE RAIN/SNOW, CONDENSATION/LARGE WATER DROPLETS/WATER FORMS ON INSIDE OF HEADLIGHT LENS ASSEMBLY REDUCING EFFECTIVENESS OF HEADLIGHT AND REDUCE VISIBILITY IN POOR LIGHTING CONDITION (NIGHT/SNOW/RAIN). WAS TOLD BY AUDI USA/DEALERS THAT THERE IS A TSB FOR THIS PROBLEM BUT REFUSE TO FIX DEFECT UNDER CPO WARRANTY. WAS TOLD BY NYS INSPECTION STATION THAT IT MAY NOT PASS SAFETY INSPECTION DUE TO DEFECT IN HEADLIGHT BECAUSE IT IS NOT SAFE TO OPERATE CAR WITH DEFECTIVE HEADLIGHT AND DECREASE LIGHTING POWER LEADING TO REDUCE VISIBILITY. OWNER SINCE 1/2010 CPO.

NHTSA ODI #10321791

38,000 miles · Mar 11, 2010
Exterior Lighting

SEVERAL INTERMITTENT HEADLIGHT MALFUNCTIONS: HEADLIGHT FLICKERING AS WELL AS HEADLIGHT SHUTTING OFF. THE RIGHT HEADLIGHT HAS MALFUNCTIONED (TURNED OFF), WITH NO CONSISTENT CAUSE APPARENT. THE SPECIFIC ERROR MESSAGE THAT APPEARS IN THE DRIVER INFORMATION SCREEN IS "LEFT HEADLIGHT DIPPED". THIS CONDITION IS BOTH UNSAFE, AND ILLEGA…

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SEVERAL INTERMITTENT HEADLIGHT MALFUNCTIONS: HEADLIGHT FLICKERING AS WELL AS HEADLIGHT SHUTTING OFF. THE RIGHT HEADLIGHT HAS MALFUNCTIONED (TURNED OFF), WITH NO CONSISTENT CAUSE APPARENT. THE SPECIFIC ERROR MESSAGE THAT APPEARS IN THE DRIVER INFORMATION SCREEN IS "LEFT HEADLIGHT DIPPED". THIS CONDITION IS BOTH UNSAFE, AND ILLEGAL. IT CAN OCCUR SEVERAL TIMES PER TRIP, THEN NOT OCCUR AT ALL FOR SOME TIME. PROBLEM IS INTERMITTENT AND SPORADIC. THE HEADLIGHT FLICKERS, THEN GOES OUT, BUT WILL COME BACK ON WHEN THE LIGHT SWITCH IS TURNED OFF AND ON AGAIN. IT USUALLY OCCURS DURING COLD WEATHER OR ON BUMPY ROADS. ANECDOTAL EVIDENCE (CONVERSATIONAL, AND VIA INTERNET OWNERS' FORUMS) SUGGESTS THAT THE PROBLEM IS WIDESPREAD AMONG A SUBSTANTIAL PORTION OF AUDI'S MODEL RANGE AND YEARS. *TR

NHTSA ODI #10319009

Mileage unknown · Jan 26, 2010
Exterior Lighting

SEVERAL INTERMITTENT HEADLIGHT MALFUNCTIONS: HEADLIGHT FLICKERING AS WELL AS HEADLIGHT SHUTTING OFF. HAVE OWNED THE CAR FOR 2 YEARS. THE RIGHT HEADLIGHT HAS MALFUNCTIONED (TURNED OFF), WITH NO CONSISTENT CAUSE APPARENT. THE SPECIFIC ERROR MESSAGE THAT APPEARS IN THE DRIVER INFORMATION SCREEN IS "RIGHT HEADLIGHT DIPPED". THIS CON…

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SEVERAL INTERMITTENT HEADLIGHT MALFUNCTIONS: HEADLIGHT FLICKERING AS WELL AS HEADLIGHT SHUTTING OFF. HAVE OWNED THE CAR FOR 2 YEARS. THE RIGHT HEADLIGHT HAS MALFUNCTIONED (TURNED OFF), WITH NO CONSISTENT CAUSE APPARENT. THE SPECIFIC ERROR MESSAGE THAT APPEARS IN THE DRIVER INFORMATION SCREEN IS "RIGHT HEADLIGHT DIPPED". THIS CONDITION IS BOTH UNSAFE, AND ILLEGAL - I HAVE BEEN PULLED OVER BY POLICE AS A RESULT OF THIS. IT CAN OCCUR SEVERAL TIMES PER TRIP, THEN NOT OCCUR AT ALL FOR SOME TIME. PROBLEM IS INTERMITTENT AND SPORADIC. THE HEADLIGHT FLICKERS, THEN GOES OUT, BUT WILL COME BACK ON WHEN THE CAR IS RESTARTED. THE DEALERSHIP HAS BEEN NOTIFIED OF THE PROBLEM ON AT LEAST 3 VISITS, AND HAS CLAIMED THAT EVERYTHING IS FINE AND THEY CAN NOT REPRODUCE. THEY HAVE SUGGESTED/GUESSED THAT IT IS THE XENON LIGHT BULB ITSELF, AND REPLACED THE BULB ON ONE OCCASION. ANECDOTAL EVIDENCE (CONVERSATIONAL, AND VIA INTERNET OWNERS' FORUMS) SUGGESTS THAT THE PROBLEM IS WIDESPREAD AMONG A SUBSTANTIAL PORTION OF AUDI'S MODEL RANGE AND YEARS. *TR

NHTSA ODI #10302366

74,000 miles · Jan 18, 2010
Exterior Lighting

"INTERMITTENT HEADLIGHT MALFUNCTION. OVER THE COURSE OF OWNERSHIP, THE RIGHT HEADLIGHT HAS MALFUNCTIONED (TURNED OFF), WITH NO CONSISTENT CAUSE APPARENT. THE SPECIFIC ERROR MESSAGE THAT APPEARS IN THE DRIVER INFORMATION SCREEN IS "RIGHT HEADLIGHT DIPPED". THIS CONDITION IS BOTH UNSAFE, AND ILLEGAL - AS MANY STATES WILL ISSUE A T…

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"INTERMITTENT HEADLIGHT MALFUNCTION. OVER THE COURSE OF OWNERSHIP, THE RIGHT HEADLIGHT HAS MALFUNCTIONED (TURNED OFF), WITH NO CONSISTENT CAUSE APPARENT. THE SPECIFIC ERROR MESSAGE THAT APPEARS IN THE DRIVER INFORMATION SCREEN IS "RIGHT HEADLIGHT DIPPED". THIS CONDITION IS BOTH UNSAFE, AND ILLEGAL - AS MANY STATES WILL ISSUE A TRAFFIC VIOLATION FOR DRIVING WITH A NON-FUNCTIONING HEADLIGHT. IT HAS HAPPENED ABOUT 7-8 TIMES, THE HEADLIGHT FLICKERS, THEN GOES OUT, BUT WILL COME BACK ON WHEN THE CAR IS RESTARTED, THEN BE FINE FOR WEEKS OR MONTHS AT A TIME. THE DEALERSHIP HAS BEEN NOTIFIED OF THE PROBLEM ON AT LEAST 3 VISITS, AND HAS CLAIMED THAT EVERYTHING IS FINE AND THEY CAN NOT REPRODUCE. THEY HAVE SUGGESTED/GUESSED THAT IT IS THE XENON LIGHT BULB ITSELF, HOWEVER IT HAS CHECKED OUT FINE EACH TIME, AND AS MENTIONED, HAS FUNCTIONED FLAWLESSLY AFTER EACH OCCURRENCE WITH MERELY A RESTART OF THE VEHICLE. NO PARTS HAVE BEEN REPAIRED OR REPLACED, HOWEVER THEY HAVE CLAIMED TO PERFORM A VISUAL INSPECTION OF THE ELECTRICAL CONNECTIONS ON AT LEAST ONE VISIT. ANECDOTAL EVIDENCE (CONVERSATIONAL, AND VIA INTERNET OWNERS' FORUMS) SUGGESTS THAT THE PROBLEM IS WIDESPREAD AMONG A SUBSTANTIAL PORTION OF AUDI'S MODEL RANGE AND YEARS." *TR

NHTSA ODI #10300160

Mileage unknown · Jan 9, 2010
Exterior Lighting

2005.5 AUDI S4 BOTH LEFT AND RIGHT HEADLIGHT FLICKER AND 'DIP' (GO OUT). THOUSANDS OF PEOPLE ARE HAVING THIS PROBLEM AS WELL, AUDI IS DOING NOTHING TO RECALL THIS. *TR

NHTSA ODI #10298852

30,500 miles · Dec 15, 2009
Exterior Lighting

I JUST PURCHASED A 2005 AUDI S4 WITH ONLY 30,000 MILES. THE CAR IS IN EXCEPTIONAL CONDITION AND I AM VERY PLEASED. HOWEVER, BOTH HEADLIGHT UNITS CONTAINED CONSIDERABLE CONDENSATION. IT SERIOUSLY REDUCES MY ABILITY TO CLEARLY SEE AT NIGHT. LAST NIGHT WAS THE FIRST TIME I HAD TO USE MY LIGHTS AND I HAD TO KEEP CHECKING TO SEE …

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I JUST PURCHASED A 2005 AUDI S4 WITH ONLY 30,000 MILES. THE CAR IS IN EXCEPTIONAL CONDITION AND I AM VERY PLEASED. HOWEVER, BOTH HEADLIGHT UNITS CONTAINED CONSIDERABLE CONDENSATION. IT SERIOUSLY REDUCES MY ABILITY TO CLEARLY SEE AT NIGHT. LAST NIGHT WAS THE FIRST TIME I HAD TO USE MY LIGHTS AND I HAD TO KEEP CHECKING TO SEE IF THEY WERE ON. AFTER DISCUSSING THE ISSUE WITH MY LOCAL AUDI SERVICE DEPARTMENT, I WAS TOLD THAT IS NORMAL. THEY SAID TO TAKE IT HOME AND LET IT RUN FOR AN HOUR WITH THE LIGHTS ON. ALSO IF I HAD A HAIR DRYER, THAT MIGHT SPEED UP THE PROCESS. THIS WAS ORIGINALLY A $45,000 - $50,000 CAR AND I AM EXPECTED TO "DRY" THE HEADLIGHTS EVERY TIME IT RAINS? *TR

NHTSA ODI #10295757

Official recalls

2

18V427000 · Air Bags:frontal:passenger Side:inflator Module

Jun 22, 2018

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2005-2008 Audi A4 Sedan, A4 Avant, S4 Avant and S4 Sedan, 2007-2008 RS4 Sedan, 2004 RS4 Cabriolet, 2007-2009 A4 Cabriolet and S4 Cabriolet, 2005-2011 A6 Sedan, 2006-2011 A6 Avant, and 2007-2011 S6 Sedan vehicles. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the passenger frontal air bag, these inflators may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

Consequence & remedy

Consequence: An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.

Remedy: Audi has notified owners, and dealers will replace the passenger frontal air bag with an alternate remedy part, free of charge. The recall began June 29, 2018. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 69R7. Note: This recall supersedes recalls 16V382, 17V032 and 18V004 and includes vehicles that may have had their air bag previously replaced under one of those campaigns.

17V032000 · Air Bags:frontal:passenger Side:inflator Module

Jan 11, 2017

Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2009 Audi A4 Cabriolet, S4 Cabriolet, A6 Avant, A6 Sedan and S6 Sedan vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, the District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B." Additionally, unless included in "Zone B" above, Volkswagen is recalling certain 2005-2008 Audi A4 Avant, A4 Sedan, A6 Sedan, S4 Avant and S4 Sedan vehicles, 2007-2008 A4 Cabriolet, RS4 Sedan, S4 Cabriolet and S6 Sedan vehicles, and 2006-2008 A6 Avant and 2008 RS4 Cabriolet vehicles originally sold, or ever registered, in Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.

Consequence & remedy

Consequence: An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.

Remedy: Audi will notify owners, and dealers will replace the passenger frontal air bag inflator, free of charge. The recall began March 30, 2018. Owners may contact Audi customer service at 1-800-253-2834. Note: This recall has been superseded by recall number 18V427.

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.