Problems owners report
Complaints filed with NHTSA about the 1994 Audi S4, by the system named in each complaint. One complaint can name several.
- Fuel system, gasoline6
- Service brakes, hydraulic1
- Engine and engine cooling1
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 0 injuries and 0 deaths reported
Compared with other years
NHTSA ODI complaints by model year
In New Zealand
1 1994 cars are on the New Zealand register.
NZ Transport Agency Waka Kotahi, Motor Vehicle Register (March 2026) · CC BY 4.0
Recalls in Canada
2 Transport Canada recalls for the 1994 Audi S4.
| 2000097 14 Apr 2000 | Fuel System On certain vehicles, a fuel feed line connecting the fuel filter to the engine can prematurely age and shrink through exposure to high under hood temperature ca… |
| 1996024 6 Feb 1996 | Electrical THE IGNITION SWITCHES ON THESE VEHICLES MAY HAVE BEEN IMPROPERLY MANUFACTURED AND COULD CAUSE ELECTRICAL ACCESSORIES, SUCH AS TURN SIGNALS, WINDSHIELD WIPERS, L… |
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada
Recalls
VEHICLE DESCRIPTION: PASSENGER VEHICLES. A FUEL FEED LINE CONNECTING THE FUEL FILTER TO THE ENGINE CAN PREMATURELY AGE AND SHRINK THROUGH EXPOSURE TO HIGH UNDER HOOD TEMPERATURE CAUSED BY THE TURBOCHARGER.
DEFECTIVE IGNITION SWITCHES WERE IMPROPERLY MANUFACTURED AND CAN CAUSE SOME ELECTRICAL ACCESSORIES TO MALFUNCTION.
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What Audi told its dealers about the 1994 Audi S4: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 10249085 | Google Maps Street View (NVLW)) |
| 10249054 | Due to new Minnesota state regulations regarding biofuels, biodiesel blends of B5 or less may not be available in the State of Minnesota. |
| 10243787 | Audi Elsa Newsletter |
| 10231130 | Idenifying and mixing factory fill engine coolants |
| 10216662 | Discontinuation and mixing of Audi-approved engine coolants. |
| 10216656 | Discontinuation and mixing of Audi-approved engine coolants. |
| 10155644 | This special notice is to inform dealers to return all part numbers listed in the document and order the superseded part numbers going forward. |
| 10128222 | Due to increasing requests for high voltage personal protective equipment (HVE PPE) for dealer technicians working with high voltage vehicles (Hybrid, Plugin Hybrid, Electric Vehicle), the Volkswagen Tools and Equipment Team has identified two US based suppliers to support dealers in USA and Canada. |
| 10123901 | Supersedes Technical Service Bulletin Group 00 number 11-19 dated April 8, 2011. This TSB contains information on technician preparation when calling the Audi Technical Assistance Center |
| 10123882 | Supersedes Technical Service Bulletin Group 19 number 11-19 dated February 10, 2011. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service. |
| 10123764 | Supersedes Technical Service Bulletin Group 19 number 15-61 dated July 7, 2015. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service. |
| 10123587 | Supersedes Technical Service Bulletin Group 19 number 13-35 dated March 25, 2013. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service. |
| 10122415 | Supersedes Technical Service Bulletin Group 19 number 13-41 dated June 20, 2013. Discontinuation and mixing of Audi-approved engine coolants. G11, G12, and G12+ coolants have been replaced by an improved version. G12++ coolant (for service available) has been introduced in MY 2005 for all engines. G13 has been introduced in MY 2008 as factory filling and service. |
| 10121365 | Supersedes Technical Service Bulletin Group 90 number 10-14 dated August 10, 2010. Cigarette lighter element will not lock into the lighter socket -U1- to begin the heating process, or the lighter element will not automatically release once the heating process has completed. As a result, the socket can become inoperative when used as a power outlet. |
| 10058584 | AUDI: ENGINE, ON SOME VEHICLES, WOULD RUN IRREGULARLY OR HAVE MALFUNCTION INDICATOR LAMP (MIL) ON OR POSSIBLE FILTER ELEMENT FOR CAMSHAFT ADJUSTMENT VALVE CAN LOOSEN AND IN OIL CIRCUIT, THERE IS NO DAMAGE FROM LOOSENED PARTICLES. MODEL ALL. ALL YEARS. *PE |
| 10022141 | HEADLIGHT AIMING, USING HELLA UNIVERSAL BEAMSETTER. *KB |
NHTSA manufacturer communications (public domain)
NHTSA investigations
FUEL SUPPLY LINE LEAK
NHTSA Office of Defects Investigation