2014 Audi S4 Fuel system Problems
- Complaints
- 3about this part
- Share
- 18%of 17 total for the year
- Median mileage
- 58,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 3 complaints about the fuel system of the 2014 Audi S4, 18% of the 17 complaints for this model year. Where a mileage was given, the median is 58,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I have encountered the problem of air bubble formation in my fuel system (code 16903) when reading codes in my car. I thought it was just a fuel pump issue so I replaced it. I then realized it wasn't just a pump issue as the car kept reading those codes and kept stopping. I talked to a local Audi dealership and said I would have to get the fuel pump vapor extension. When asked they said that it's only a TSB not a recall due to it not being a safety issue. …”
NHTSA complaint #11328789, filed 2020-06, 62,600 miles“After 2 engine oil leaks, in 2.5 years, I smelled gas fumes in the cabin numerous times, scheduled an appt for a check with the west islip ny Audi dealership. Picked up car from dealership, with work order and service rep. Simply stating no problem found under each of my 5 concerns, which told me that they did not even look at the issues. With every work order, which are numerous on this car, it is stated what was done, but not this service . Two days after picking up my vehicle, Audi reported a recall due to gas leaks in their vehicles. …”
NHTSA complaint #10916288, filed 2016-10, 38,000 miles“While traveling at 75mph, uphill, in 100f weather the fuel low pressure fuel system developed a vapor bubble that stalled the low pressure fuel pump and starved the motor for fuel. The car stalled on the freeway and would intermittently restart until the low pressure fuel pump failed. The repair required additional valves and hoses he added to the low pressure fuel system to compensate for the poor vapor management design. The car had to be towed to a dealership where the appropriate fix and TSB was executed. …”
NHTSA complaint #11220686, filed 2019-06, 58,000 milesRelated service bulletins
- 11026295Nov 26, 2025This bulletin provides information when the MIL is on, DTC P310B00 in ECM; Vapor pocket formation in fuel system.
- 11020367Jun 26, 2025This bulletin provides information when there is corrosion on the exhaust tail pipes.
- 11007301Aug 30, 2024This bulletin provides information when there are functional restrictions or driving behavior due to diesel detected in petrol.
- 11007220Aug 30, 2024This bulletin provides information when there are functional restrictions or driving behavior due to diesel detected in petrol.
- 11007297Aug 8, 2024This bulletin provides service information ror when the fuel tank cannot be fully filled.
- 11007216Aug 8, 2024This bulletin provides service information ror when the fuel tank cannot be fully filled.
- 10231590Feb 6, 2023This bulletin contains instructions for when to add gasoline additives for cleaning the injectors.
Fuel system: other model years
Other parts of the 2014 Audi S4
6 complaintsEngine
3 complaintsOther or unknown
3 complaintsTransmission and drivetrain
3 complaintsAir bags
1 complaintsBrakes
1 complaintsElectrical system
1 complaintsElectronic stability control
1 complaintsEquipment
1 complaints
← All problems reported for the 2014 Audi S4
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology