NHTSA lists 2 safety recalls and 43 owner complaints for the 2005 Audi S4. Most complaints involve exterior lighting (33) and electrical system (5). The EPA rates it 16 mpg combined.
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.
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.
Verbatim excerpts from NHTSA complaints, by component
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.”
Owner complaint to NHTSA·Filed Apr 26, 2018·Exterior lighting, Air bagsODI 11090304
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.”
Owner complaint to NHTSA·Filed Nov 23, 2015·Electrical system, SeatsODI 10806322
Air bags
4 reports2 crashes
“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?”
Owner complaint to NHTSA·Filed Apr 18, 2018·Air bagsODI 11088781
2 safety recalls as of Nov 11, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
What are the most common 2005 Audi S4 problems?
Owners filed 43 complaints with NHTSA. The most-cited components are exterior lighting (33), electrical system (5), air bags (4). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
What MPG does the 2005 Audi S4 get?
The EPA rates the 2005 Audi S4 at 16 mpg combined, depending on engine and drivetrain (6 versions rated).