Problems · NHTSA complaints
2005 Audi S4 problems
Owners filed 43 complaints about the 2005 Audi S4 with NHTSA between Oct 2006 and Apr 2018. The most-cited component is exterior lighting (33).
Complaints
43
Filed with NHTSA
Crashes
2
Reported by owners
Fires
0
Reported by owners
Injuries
1
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Exterior lighting33
- Electrical system5
- Air bags4
- Engine and engine cooling3
- Engine1
- Steering1
- Seats1
- Visibility/wiper1
- Fuel system, gasoline1
- Power train1
- Visibility1
- Service brakes, hydraulic1
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 Nov 11, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
1
3
1
3
11
7
4
2
3
2
1
3
2
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2006 | 1 |
| 2007 | 3 |
| 2008 | 1 |
| 2009 | 3 |
| 2010 | 11 |
| 2011 | 7 |
| 2012 | 4 |
| 2013 | 2 |
| 2014 | 3 |
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 3 |
| 2018 | 2 |
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
Exterior lighting
33 reports
“TL* TAKATA RECALL. THE CONTACT OWNS A 2005 AUDI S4. THE CONTACT STATED THAT THE EXTERIOR HEADLAMPS FAILED TO ILLUMINATE WITHOUT WARNING. THE CONTACT RECEIVED NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 16V382000 (AIR BAGS); HOWEVER, THE PARTS TO DO THE REPAIR WERE UNAVAILABLE. THE CONTACT STATED THAT THE MANUFACTURER EXCEEDED A REASONABLE AMOUNT OF TIME FOR THE RECALL REPAIR. AUDI PACIFIC (20460 HAWTHORNE BLVD, TORRANCE, CA) WAS CONTACTED AND CONFIRMED THAT THE PARTS WERE NOT AVAILABLE FOR THE RECALL REMEDY. AUDI PACIFIC WAS ALSO CONTACTED REGARDING THE EXTERIOR LIGHTING FAILURE, BUT THE FAILURE COULD NOT BE REPLICATED. THE MANUFACTURER WAS NOT ABLE TO CONFIRM WHEN THE PARTS WERE TO BECOME AVAILABLE. THE CONTACT HAD NOT EXPERIENCED A FAILURE. PARTS DISTRIBUTION DISCONNECT.”
Electrical system
5 reports1 crash
“HEATED SEAT ELEMENT BURNED OR MELTED THE SEAT WHILE THE CAR WAS OFF OVERNIGHT. PASSENGER SEAT LEATHER IS NOW SEPARATED, SHRIVELED (HARD AS A ROCK) AND WOULD HAVE BURNED THE PASSENGER IF THEY HAD BEEN IN THE SEAT.”
Air bags
4 reports2 crashes2 related recalls
“TAKATA RECALL. I RECEIVED TWO LETTERS FROM AUDI IN MARCH 2017 AND RECENTLY A THIRD LETTER IN MARCH 2018 INFORMING ME OF THE PASSENGER FRONTAL AIRBAG INFLATOR PROBLEM. THE MOST RECENT LETTER STATES THAT IT IS DANGEROUS TO DRIVE AND THE AIRBAG COULD EXPLODE CAUSING SERIOUS INJURY OR DEATH. I CALLED AUDI SERVICE IN APRIL 2017 AND AGAIN IN APRIL 2018 AND THEY SAID THEY DO NOT HAVE A FIX FOR THE PROBLEM AND HAVE NO TIME FRAME FOR WHEN IT WILL BE AVAILABLE. HOW CAN I CONTINUE TO DRIVE A CAR THAT HAS SIGNIFICANT RISK TO CAUSE INJURY AND THEY WILL NOT FIX IT FOR OVER A YEAR?”
Engine and engine cooling
3 reports
“2005.5 AUDI S4. 104,000 MILES. CHAIN TENSIONER DAMAGED. CAUSE DAMAGE TO ENGINE. ENGINE SHOULD BE REPLACED. *TR”
Engine
1 report
“THE COMPLAINT IS ABOUT THE MOTORS LOSING OIL EVERY 1000 MILES A 1QT IS NEED EACH TIME. THE ENGINE IS CAUSED AND BURNS OIL FAST TO THE MOTOR TO LOSE OIL MORE RAPIDLY. NEEDS TO BE REPLACED. MY MOTOR IS LOSING OIL! AND SO DO OTHER MODELS HAVENING THIS PROBLEMS ISNT GOOD.”
Steering
1 report
“I WAS ON MY WAY TO SUBSTITUTE TEACH AT AN ELEMENTARY SCHOOL IN SANTA CRUZ, CA AND SO WAS IN THE MIDDLE OF A LOT OF EARLY TRAFFIC AT A LEFT TURN SIGNAL WHEN I HEARD A VERY STRANGE RUMBLE. I THOUGHT IT WAS ANOTHER CAR AS MY CAR HAD JUST BEEN IN FOR A 95,000 MILE SERVICE A FEW WEEKS EARLIER. HOWEVER, PART WAY THROUGH THE TURN I WAS ALMOST UNABLE TO STEER THE CAR. I HAD TO FIGHT THE CAR TO KEEP IT FROM HITTING A BICYCLIST AND TO GET IT OFF TO THE SIDE OF THE ROAD WHERE IT THEN STOPPED STEERING AND DIED. AT THAT POINT IT WAS BLOCKING TWO CARS IN A DRIVEWAY, BUT I COULD NOT STEER IT AT ALL. THIS WAS ON THE STREET DIRECTLY IN FRONT OF THE DEL MAR ELEMENTARY SCHOOL. I CALLED FARMERS INSURANCE AND MONTEREY PENINSULA AUDI WHERE IT WAS TOWED. I WAS TOLD THE STEERING COLUMN HAD CRACKED AND THE FLUID HAD LEAKED OUT. I WAS ALSO TOLD THERE WAS NO WAY TO BE ABLE TO DIAGNOSE THIS IN ROUTINE SERVICES.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 11, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.