1994 Audi S4
Recalls, most-reported problems, crash-test ratings, fuel economy and what a 1994 Audi S4 is worth — from official NHTSA and EPA data. 1 on record.
1994 Audi S4 at a glance
Included: that car's specs and build sheet, model-year recall campaigns and a fair price.
1994 Audi S4 recalls 2
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.
Fix: DEALERS WILL REPLACE THE ENTIRE FUEL FEED LINE FROM THE FUEL FILTER TO THE ENGINE WITH A FUEL LINE OF SHRINKAGE-PROOF MATERIAL.
DEFECTIVE IGNITION SWITCHES WERE IMPROPERLY MANUFACTURED AND CAN CAUSE SOME ELECTRICAL ACCESSORIES TO MALFUNCTION.
Fix: DEALERS WILL REPLACE THE IGNITION SWITCH.
Source: U.S. NHTSA, checked 4 Nov 2026. A campaign covers the model year; to see whether a particular car still needs the repair, check its VIN on NHTSA.gov or ask a franchised dealer.
1994 Audi S4 common problems
The most-reported problem areas across all 7 owner complaints filed with NHTSA — and what to check before you buy.
1994 Audi S4 MPG & running costs
Source: U.S. EPA / DOE fueleconomy.gov.
Estimated 5-year cost to own
A rough guide to what running a 1994 Audi S4 costs over five years and 75,000 miles.
How this is estimated: fuel is the U.S. EPA annual cost at 15,000 miles a year. There aren't enough comparable listings to estimate depreciation for this model, so it is left out. Not included: insurance, maintenance, repairs, taxes, registration and finance costs. Treat it as a comparison guide, not a quote.
Investigations & service bulletins
NHTSA defect investigations 1
FUEL SUPPLY LINE LEAK Closed
NHTSA #PE99065 · Vehicle Speed Control · opened Oct 1999 · closed Mar 2000An investigation means NHTSA is examining a possible defect — it is not a recall, and many close without one.
Manufacturer service bulletins 16
Technical notes the manufacturer sent to dealers about known issues and fixes. Useful to mention to a mechanic — they are not recalls and repairs may not be covered. Showing the 10 most recent of 16.
This special notice is to inform dealers to return all part numbers listed in the document and order the superseded part numbers going forward.
Bulletin SM 44-2017 EN · Equipment · Jun 2017Due 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 supplie…
Bulletin ATE-17-05 · Equipment · Mar 2017Supersedes 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 i…
Bulletin A191562 2025303- · Engine And Engine Cooling · Sep 2015AUDI: 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
Bulletin SB-01-15-29 · Engine · Jul 2015Due to new Minnesota state regulations regarding biofuels, biodiesel blends of B5 or less may not be available in the State of Minnesota.
Bulletin AUD4927ENG · Jul 2014Idenifying and mixing factory fill engine coolants
Bulletin Edition92 · Engine And Engine Cooling · Jun 2014Supersedes 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…
Bulletin A191450 2025303- · Engine And Engine Cooling · Jun 2014Google Maps Street View (NVLW))
Bulletin Update91i8 · May 2014Supersedes 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…
Bulletin A901341 2010353- · Equipment Adaptive/mobility · Sep 2013Audi Elsa Newsletter
Bulletin Edition42 · Equipment · Jul 2013Source: NHTSA Office of Defects Investigation, listed for the S4. Model-year data, not specific to one car.
Canadian recalls 2
Transport Canada recall campaigns for the 1994 Audi S4. Relevant if the car was first sold in, or imported from, Canada.
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 caused by the turbocharger. Such shrinkage could cause a clamp connection adjacent to the turbocharger to loose its clamping force resulting in fuel seepage. Correction: Dealers will replace the entire fuel feed line from…
Transport Canada #2000097 · Apr 2000Electrical
THE IGNITION SWITCHES ON THESE VEHICLES MAY HAVE BEEN IMPROPERLY MANUFACTURED AND COULD CAUSE ELECTRICAL ACCESSORIES, SUCH AS TURN SIGNALS, WINDSHIELD WIPERS, LAMPS, POWER WINDOWS AND AIR CONDITIONERS TO MALFUNCTION WHEN THE ENGINE IS STARTED. CORRECTION: IGNITION SWITCH WILL BE REPLACED.
Transport Canada #1996024 · Feb 1996Source: Transport Canada Motor Vehicle Safety Recalls Database.
About the Audi S4
The Audi S4 is the high performance variant of Audi's compact executive car A4. The original Audi S4, built from 1991 until 1994, was a performance-oriented version of Audi's 100 saloon/sedan. All subsequent S4s, beginning with the "B5" platform car in 1997, have been based on the Audi A4; and as the A4 has evolved from one generation to the next, so has the S4. Audi's platform generation names, beginning with "B5" in 1997, are used throughout to distinguish between generations/evolutions of these products.
From Wikipedia, licensed CC BY-SA 4.0. Describes the model line in general, not this model year specifically.