Problems · NHTSA complaints
2018 Fiat 5 Series problems
Owners filed 16 complaints about the 2018 Fiat 5 Series with NHTSA between Oct 2018 and Feb 2025. The most-cited component is engine (7).
Complaints
16
Filed with NHTSA
Crashes
0
Reported by owners
Fires
0
Reported by owners
Injuries
0
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Engine7
- Electrical system5
- Power train4
- Service brakes3
- Fuel/propulsion system2
- Structure1
- Visibility1
- Wheels1
- Vehicle speed control1
- Seats1
- Other / unknown1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 28, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
1
3
1
1
1
5
3
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 5 |
| 2024 | 3 |
| 2025 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Engine
7 reports
“I purchased my 2018 Fiat 500X POP used in April 2023 with only 22k miles. This past weekend 12/16 when I would first start my car up and get ready to leave in the mornings after having been parked for the night, my car would start up normal and I could proceed down the street. The minute I apply the break my car would lose power, stall out or shut off completely. I would press the start button, release the break, shift the gear to drive and proceed forward. I would go about 20 mph as I was driving in a residential area then my car would stall out and shut off again leaving stuck in the roadway. I repeated the start process to pull over to a safe location. I called the dealer and they said there are no recalls for this issue, however, I located one, but my VIN is not coming back as one of the affected vehicles. This is extremely dangerous as I live in an area with freeways as the only way to get to certain areas and cannot have this vehicle shutdown on freeways because it could result in a bad accident. I am looking for any assistance I can receive from this complaint. Fiat is not helpful, and the closest dealer is 2hrs from my residence.”
Electrical system
5 reports1 related recall
“THE Transmission Valve Body Solenoid was diagnosed as not working. while i was driving on the highway without any indication the car just started slowing down . There was not a warning or anything, then the transmission service lights up, i had to have my car towed to a dealership however they informed me that there was never any service they were supposed to do on my transmission because of the type of vehicle i have. this part is expensive and not easily obtainable. car is still showing transmission issue.”
Power train
4 reports1 related recall
“There is an active recall for the power train control module for this car but it is not showing up in the NHTSA list. https://static.nhtsa.gov/odi/rcl/2018/RCRIT-18V524-1313.pdf identifies the specific recall for the powertrain control module for the Fiat 500X https://www.nhtsa.gov/vehicle/2018/FIAT/500X/SUV/2WD#recalls lists the recalls done for the vehicle and it does not list the powertrain control module recall issue. We just bought this car from CARMAX and looks like this campaign recall fix was not listed on the site so they didn't address it and now the car wont work or run. If the recall was listed by the VIN they would have been required to fix before selling.”
Service brakes
3 reports
“Car continuously throttled while driving on highway and road with no warnings. Vehicle electric components like radio and parking camera would shut off and not come back on without warning or while using camera. Car now gives warnings of vehicle temperature too high”
Fuel/propulsion system
2 reports
“2021 Car failed RECALL OIL CONSUMPTION test twice at local dealership. Sept 2021 dealership said replaced a part. Oct 2021, when leaving a gas station car would not start, dashboard was flashing symbols and died, would not start, after 1/2 hr car bucked to house 6 blocks away. Yes car is available for inspection. Feb 2022 car died twice in middle of busy street with a 18wheeler almost ramming me in back, oil symbol briefly flashed then car died, couldn't even pull over to side, very frightening experience for at 73 yrs old. After 1/2 hr or so was able to return home, next day drove to dealership they said no oil in car, tapped it off, but I had just got an oil change and driven only 1798 miles. Problem has been confirmed and test done 3 times to qualify for motor replacement. OIL Warning Lamp does not stay on, only a brief flash. 3 Fail tests but has not been included in RECALL OIL CONSUMPTION.”
Structure
1 report
“Driver side door handle broken. Started sticking and being hard to pull/open and when open would stick in the out position and not latch shut unless pushed back in. Soon after it broke, suspected handle hinge malfunction, cannot be opened from the outside. Multiple other complaints about door handles on 500’s. Requires using passenger door to enter vehicle or leaving driver side window down to open from interior handle. Huge safety concern.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.