Fuel injection system: fuel rail
Risk. A fuel leak in the injection system in the presence of an ignition source, increases the risk of a fire.
NHTSA has logged 22 owner complaints about the 2012 Audi S4, most often about the power train. It is covered by 1 safety recall, and for recall 15V-019 the manufacturer reports only 92% of affected cars repaired.

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through September 27, 2019. Updated daily. Photo: IFCAR, Public domain.
22 complaints grouped by the system owners reported.
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Power train | 14 | 0 |
| Fuel/propulsion system | 5 | 2 |
| Electrical system | 3 | 0 |
| Service brakes | 2 | 0 |
| Vehicle speed control | 1 | 0 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
Risk. A fuel leak in the injection system in the presence of an ignition source, increases the risk of a fire.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Audi.
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the S4 median. How we score
2012 Audi S4 4 DR AWD in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.
Recent power train complaints filed with NHTSA, shortened. Personal details are removed.
CIRCUIT BOARD ON THE MECHATRONICS UNIT FAILED AND CAR IS UNDER 100K MILES. SUDDEN SHAKING AND BANGING ON THE HIGHWAY WHEN GIVING IT GAS ABOVE 30. FREQUENT JOLTS, DANGEROUS TO DRIVE...
THE DSG TRANSMISSION IN MY AUDI S4 EXPERIENCES ABRUPT JERKING FROM 2ND TO 1ST GREAT WHILE DECELERATING. IT ALSO JERKS AND FEELS LIKE IT IS BEING HIT WHILE SHIFTING FROM 1ST TO 2ND WHEN ACCELERATING NORMALLY.
THE GEARBOX MALFUNCTION SCREEN ON THE DASH SHOWED UP OUT OF NOWHERE THEN FOLLOWED BY A PARKING BRAKE MALFUNCTION THEN THE CAR GOES INTO NEUTRAL AND JUST SITS THERE REVVING THE ENGINE. I TRY TO PUT IT IN NEUTRAL THEN DRIVE BUT THE LEVER GETS STUCK AND I CANT MOVE TO DRIVE. THIS FIRST HAPPEN IN THE…
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.