Fiat 500X jerking problems

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 May 18, 2020 · Driver assistance, Lights · NC

When driving the car its seems as if its not changing gears pushing the gas to accelerate its will let off a rushing sound with no movements then it will jerk and accelerate faster it mainly does this when taking off and turning onto another road where their is busy traffic that will eventually cause a accident with oncoming vehicles if the acceleration isn't at its speed.

Filed Feb 28, 2020 · Engine, Suspension · 30,000 miles · CT

Vehicle has difficulty shifting in lower gears. When the vehicle shifts, the car jerks you forward. This has happened increasingly over the last several months, but has been present since I bought the vehicle in feb '19. Vehicle also tends to shake when in idle at red lights, shaking stops after putting the vehicle in neutral.

Filed Feb 18, 2020 · Transmission · 40,000 miles · AR

While driving my fiat 500x, it jerks when it's shifting gears or accelerating. I took it into the dealership and there was a bulletin concerning the transmission I believe. But whatever update was done, it did not take care of the problem. I've looked for info regarding this issue and have found there are several other people having the same problem.

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 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.

Filed Jun 8, 2018 · Acceleration, Electrical · 100 miles · MI

Over the past two years I've had to take my vehicle in to the dealership numerous times. The car will accelerate on its own without touching the gas pedal, switch gears on its own, accelerate while making a stop, uncontrollably jerk well moving at a slow speed's and display messages such as drive mode unavailable at random times while driving. This car is dangerous to drive and has almost created an accident numerous times while I had my children in the vehicle. *tt

Filed Dec 27, 2017 · Transmission · 32,000 miles · OH

I slightly overshot a stop sign at the bottom of a steep hill. I saw that a car with the right of way was rapidly approach the intersection so I put the car in reverse with the intent to back up the car a couple of feet. I put the car in reverse and took my foot off the brake and instead of engaging the gear in reverse, the car rolled forward in neutral farther into the intersection before the gear was engaged by the computer. Luckily, the car jerked backward in time when the computer finally engaged the gear. The delay in the computer recognizing the gear is common. Even though I have all software updates for the transmission, the computer frequently lags in shifting to the appropriate gear. When it does shift, there is noticeable jerk.

Filed Dec 2, 2017 · Transmission · 33,000 miles · OH

Transmission hesitates to engage after pressing accelerator and also shifts roughly when it does change gears. All available software patches have been applied by dealer, however the problem persists. This is a safety issue, especially when merging or turning into traffic, since acceleration can lag randomly when it is needed the most. Because of the acceleration bursts and lags when shifting, the car is difficult to control and provides a herky-jerky driving experience.

Filed Sep 5, 2017 · Transmission · 2,000 miles · TN

Tl* the contact owns a 2016 fiat 500x. While driving various speeds, the vehicle suddenly experienced severe jerking and hesitation. The vehicle was taken to the dealer (crown chrysler/fiat located in chattanooga, tn) where the PCM, TCM, and transmission were reprogrammed, but the failure continued. The manufacturer was not notified of the failure. The VIN was invalid. The failure mileage was 2,000.