The 1993 Audi S4 has 2 NHTSA recall campaigns affecting an estimated 57,800 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 18 complaints with NHTSA, most often about the fuel system, gasoline. Last updated July 5, 2026.
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.
THIS CAN RESULT IN FUEL SEEPAGE AT THE CONNECTION.
DEALERS WILL REPLACE THE ENTIRE FUEL FEED LINE FROM THE FUEL FILTER TO THE ENGINE WITH A FUEL LINE OF SHRINKAGE-PROOF MATERIAL.
VEHICLE DESCRIPTION: PASSENGER VEHICLES. SOME AIR BAG SENSORS DO NOT COMPLY WITH AUDI'S DURABILITY STANDARDS OVER THE LIFETIME OF THE VEHICLE.
IN THE EVENT THE SENSOR SHOULD MALFUNCTION, THE AIR BAG RESTRAINT SYSTEM CAN INADVERTENTLY DEPLOY. DEPLOYMENT OF THE AIR BAG RESTRAINT SYSTEM WITHOUT WARNING COULD CAUSE A DRIVER TO LOSE VEHICLE CONTROL.
DEALERS WILL REPLACE THE AIR BAG SENSOR CONTROL MODULE.
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“This was a consumer call received by regional office staff, and is being relayed. Vehicle has an active fuel system recall, and dealer in salt lake city, ut scheduled repair, but cancelled the repair appointment due to not having proper billing code to be reimbursed for the repair by the…”
“I run a small repair shop and have seen a number of audi vehicles from 1986 to 1998 which have steel gasoline lines that collect road salt and rust in the rubber support grommets attached to the chassis. The rust causes a pinhole leak which then begins to spray gasoline on the exhaust system. I…”
“I own two of the original audi s4's, both 1993 models. My daughter was driving one of these cars in 2007 and the throttle stuck open so that the engine raced uncontrollably. She was able to put the clutch in and stop the car and turn the engine off. Then she had the car towed to the nearest repair…”
“I own two of the original audi s4's, both 1993 models. My daughter was driving one of these cars in 2007 and the throttle stuck open so that the engine raced uncontrollably. She was able to put the clutch in and stop the car and turn the engine off. Then she had the car towed to the nearest repair…”
“Plastic throttle cable piece broke resulting in stuck throttle condition. For an account of the incident along with photos see the url below. *nm http://www.s-cars.org/postnuke/modules.php?op=modload&name=news&file=article&sid=183”
“I had previously contacted nhsta regarding fuel line leaks in the engine compartment of the ealry s4 and s6 models. This resulted in the "ky" recall campaign. More recently, some owners have been discovering leaks in the fuel lines going from the rear of the car to the front. These leaks occur at…”
“While driving during a rainstorm the rear end broke hard to the right sending the vehicle into a counterclockwise spin, as a result the vehicle hit a lampost.nlm”
“Fuel line failed where braided line meets solid brass line. Has happened in many other cars of this model relative to the total number sold.”
There is no summary currently available
There is no summary currently available
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1993 Audi S4 as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.