2016 Fiat 500X Fuel system Problems
- Complaints
- 6about this part
- Share
- 4%of 154 total for the year
- Median mileage
- 17,047miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 6 complaints about the fuel system of the 2016 Fiat 500X, 4% of the 154 complaints for this model year. Where a mileage was given, the median is 17,047 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 was driving down the highway in a middle lane going about 50mph when I noticed the car was no longer responsive to gas or steering. Brakes were harder to press than usual & I realized the car had turned itself off. The only way I could get it started again was to come to a complete stop & put it in park, re-start, disengage the auto-emergency brake, then put it in drive. All while cars were flying around the bend of the highway almost hitting me and almost hitting each other trying to avoid hitting me.”
NHTSA complaint #11073180, filed 2018-02, 17,047 miles“I was driving vehicle and it all of a sudden get stuck in gear in either park gear or some other gear that wont allow me to turn engine off. Sometimes it just slow down to a stop and will not go into gear again for a while or appears the gears are not engaging putting me at risk for accident on highway. Once it slowed down in traffic and I nearly got hit trying to drive it off the highway. The gears were not engaging putting me at risk of many vehicles hitting me. I was praying someone noticed I had car trouble to slow down as I was no longer in full control of vehicle. After some”
NHTSA complaint #11737019, filed 2026-05“I lease a 2016 fiat 500x in may of 2020. I received a letter saying there was a recall on my vehicle. Recently my car has completely stopped working. It was using up oil to fast. My car would stall out in the middle of the road. Or my car would not turn on completely. I kept up with maintenance ( oil changes etc. ) in June of 2022 my car started over heating. The day before I had just got my oil changed. I took it to the dealership. Which they told me I blew my head gasket. I don’t believe that’s is what happened. I believe something else had went wrong. …”
NHTSA complaint #11495122, filed 2022-11“The contact owns a 2016 Fiat 500X. The contact stated that while driving at various speeds, the vehicle stalled. The contact stated that the fuel gauge indicator failed to function as intended. The check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with DTC: P0456 and P0452. The evaporative emission system pressure sensor/switch had failed. Additionally, a leak was detected in the evaporative emission control system (EVAP). The dealer replaced unknown parts on the vehicle. The contact stated that the failure persisted. …”
NHTSA complaint #11695494, filed 2025-10, 145,297 miles“The sensor on right passenger air bag malfunction and air bag light stay on and no crashes happen upon message. Poor fuel consumption components include loss of power and idling and when accelerating. Driver mode unavailable lamp came on”
NHTSA complaint #11532404, filed 2023-07Related service bulletins
- 10175733Apr 21, 2020Possible Driveability Issues due to the Winter-Blend Fuel into the Warmer Season
- 10169219Nov 1, 2019wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
- 10217521Mar 15, 2017Oil Pump Assembly If error code P06DD present on any Pentastar V6 application, please inspect oil pump for relief valve failure. See photo attached. If valve is found out of…
- 10228143Aug 6, 2016Flash: Diagnostic And System Improvements This bulletin involves updating the Body Control Module (BCM), Powertrain Control Module (PCM) and Transmission Control Module (TCM)…
- 10140187Aug 6, 2016Flash: Diagnostic And System Improvements This bulletin involves updating the Body Control Module (BCM), Powertrain Control Module (PCM) and Transmission Control Module (TCM)…
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 2 | 18% |
| 2016 | 6 | 4% |
Other parts of the 2016 Fiat 500X
52 complaintsTransmission and drivetrain
50 complaintsElectrical system
48 complaintsOther or unknown
33 complaintsExterior lighting
14 complaintsElectronic stability control
10 complaintsVehicle speed control
10 complaintsSteering
8 complaintsBody and structure
7 complaintsBrakes
6 complaintsAir bags
5 complaintsSuspension
4 complaints
← All problems reported for the 2016 Fiat 500X
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 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