2016 Fiat 500X: engine stalls while driving

Filed Oct 24, 2025 · Fuel system · 145,297 miles · PA

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. The vehicle was taken back to the dealer, where it was diagnosed that the fuel filler neck was fractured. The vehicle was repaired three more times after the first failure. The contact stated that on a separate occasion, while driving at an undisclosed speed, the vehicle jerked while driving in second gear and occasionally in third gear. The vehicle was not diagnosed or repaired after the most recent failure. The manufacturer was not made aware of the failure. The failure mileage was 145,297.

Filed Feb 13, 2024 · Engine · CA

The car had a NTSB recall on the engine. The engine needed to be replaced. After having the engine replaced I was told to pick up the vehicle which shook profusely and then had a check engine light come on only minutes from driving away from the dealership. I turn around and returned the vehicle immediately to have it remedy the situation. It took over a month and the second time I was told to pick up the car, the same thing happened again only minutes from leaving the dealership, except this time the engine started to stutter like it was going to stall. After another month of them attempting to remedy, which is now the 3rd time they told me to pick up the vehicle which was in 22nd December 2023, the engine stalled only 100 yards of driving away from the dealership in fast 2-lane traffic. The progressive deterioration of the new replaced engine after the required recall was and is clearly a danger not only to myself and my family but also to other drivers. They are now saying which is 13 of February 2024 over a month of them trying to fix it, that the car is ready to be picked up. I do not believe this vehicle is safe to be on the road. I am concerned for myself and other drivers safety if I attempt to drive this vehicle. I have been told it has been tested but they said that the other 3 times I have picked up the vehicle. There is no way to ensure or guarantee this vehicle will not stall again in dangerous traffic. I have a video of the incident with the foreman mechanic trying to start the vehicle.

Filed Feb 24, 2023 · CA

Drive mode unavailable message came on the dashboard and after the traction and sports mode where not available for use. The radio also shut off while driving. Also the car switch from drive to 1st gear

Filed Feb 21, 2023 · Electrical · 33,000 miles · AZ

The contact owns a 2016 Fiat 500X. The contact stated that on multiple occasions, the vehicle would not start, and the vehicle had to be jumped. Additionally, while driving at various speeds, the vehicle would stall without warning. The vehicle was towed to the local dealer who diagnosed that the battery was faulty and needed to be replaced. The battery was replaced; however, immediately after retrieving the vehicle, the failure recurred. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 33,000.

Filed Nov 30, 2022 · Transmission · 39,000 miles · FL

The contact owns a 2016 Fiat 500X. The contact stated that on two separate occasions, the vehicle stalled without warning. Upon investigation, the contact discovered the federal safety agency Campaign Number: 16V529000 (Power Train) which she linked to the failure. The contact called the manufacturer who referred her to the dealer. The dealer advised her to drive the vehicle for 2,000 miles to track the failure and the contact declined. The vehicle remained in the possession of the dealer. The vehicle was not repaired. The failure mileage was approximately 39,000.

Filed Nov 28, 2022 · Fuel system, Transmission · TX

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. Now they won’t help me fix my car even when having FULL coverage warranty. and I’ve been without a car since then.

Filed Apr 16, 2021 · Transmission · 36,400 miles · NM

2016 fiat 500x easy sport awd. I took my car in last year due to a code it was threw relating to engine cooling fan & found it was on an updated recall; car was stalling both while driving & while at a complete stop, had excessive oil consumption (1 qrt needed every 2 wks), shifted hard from 1st to 2nd and also had odd idling sound at speeds btwn 15-25mph with sudden 'power burst' and last, excessive heat from engine right before it threw the code. Fiat recall assistance very helpful and got me the replacement part and serviced at local dealership. Recall never showed up under the federal safety agency even to this day. The replacement part seemed to cure all except for the odd idling sound. It's as though car is going to stall any second, almost a 'knocking' in engine and slight shaking can be felt. Recvd notice today from same dealership that took care of last recall on my car. Apparently it has been added to the powertrain recall 16v529000, so I will be scheduling an appt tomorrow. When I tried to find the recall, my VIN search came back with 'you have 0 unrepaired recalls'??? I had to complete a search without the VIN to find out what campaign it was under. If dealer is sending me alerts, certainly the federal safety agency should have my car listed for the same recall as they do...you guys do all go off the same recall database as mfg do, don't you?

Filed Nov 12, 2020 · Electrical, Engine · FL

My car didn't start and then finally did. While driving it stalled,all of a sudden I got control enough to park at work . With no warning signs I proceeded to change battery after work and it still wouldn't start then after attempting to start with new battery the car with lock symbol came out. Still at this point no warning was giving as I was driving this car perfectly fine until this. All this was on main streets. I have small kids and this is not an accident that I would ever want with or without them because of a technical issue of a car.

Filed Jan 31, 2020 · Engine · 26,500 miles · LA

During a normal driving conditions a couple weeks ago, my fiat 500x's engine turned off / stalled while I was driving. I was in the city and getting ready to turn, so I was at a slow speed - around 8 MPH. I had to turn the car off and on again and it seemed to be fine after that. But this was very alarming and if I had been going a higher speed, it could have been very dangerous.

Filed Jan 25, 2020 · Engine · NY

The transmission seems to jerk or shake when it shifts sometimes, like the car is going to stall or lurch forward. I have taken it in to the dealership, but have gotten no where with them. Sometimes when im driving in the highway if I step on the gas the car jerks back before going foward. Its extremely scary as if someone is hitting you fom behind.

Filed Jan 3, 2020 · Driver assistance · 80,000 miles · LA

The other day my check engine light came on and said that my coolant level was low. I went a grabbed coolant and filled it up to the max line. For two days in a row now, I have been having lights randomly pop up on my dash. Such as drive mode unavailable, service engine, 4wd unavailable. It has also randomly stalled while driving with my son in the car. The dealership said there is nothing wrong with the car. Which there obviously is. I searched and numerous people have had the same issues with their 2016 fiat 500x, and the dealerships all say the same thing. Incidents have allhapened while the car was in motion. On neighborhood roads to interstate. At speed mileage of anywhere from 15-70mph.

Filed Nov 14, 2019 · Transmission · 110,000 miles · MN

The transmission seems to jerk or shake when it shifts sometimes, like the car is going to stall or lurch forward. I've had transmission issues with other cars that I own and it feels like that is going on with my car. I have an extended warranty and have taken it in to the dealership, but have gotten no where with them. They fail to see a problem and say there's nothing they can do. I have 110,000 miles on the vehicle and my powertrain warranty is set to expire in 10,000 miles. I see that there was a recall on this vehicle but apparently my specific vehicle wasn't included in the recall. Based on the problems that I'm having, I feel the problems I'm experiencing could be related to the recall. I rely on my car for work but am increasingly nervous about continuing to drive it.