2016 Fiat 500x Complaints

AIR BAGS — Filed 04/02/2026

The contact owns a 2016 Fiat 500X. The contact stated that while driving approximately 30 MPH through a green light, another vehicle driving through a red light and attempting to make a turn, the front bumper of the contact’s vehicle crashed into the front passenger’s side door. No warning lights were illuminated. The contact exited the vehicle safely and had a passenger in the front passenger-side seat and another in the rear middle row seat. The contact was adamant that the air bags should have deployed. The contact sought medical attention for whiplash, chest pain, bruises, a sore stomach, swollen right leg, and left leg. The contact's front seat passenger sought medical attention due to additional damage caused to a previous medical procedure on the right calf. The child passenger sitting in the rear middle row seat sought medical attention for back pain. The contact stated that the local Fire Department arrived on scene to extinguish a fire under the hood. The source of the fire was unknown. A police report was filed. The vehicle was towed to a local tow yard; however, it was unknown whether it had been declared a total loss. The local dealer where the vehicle had been purchased was contacted. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 96,000.

ELECTRICAL SYSTEM,ENGINE — Filed 06/14/2026

3 times my car had died going under 30 mph, it must turns off or goes into this neutral position and won’t let me change gears, when i restart it, the engine makes an awful squealing sound. all these “drive mode unavailable “ “check esc system” “service electronic brake” it seems it is related to the S55 / 16V529000 safety defect …. “intermittent switch to neutral while driving”

SERVICE BRAKES, HYDRAULIC,ELECTRICAL SYSTEM — Filed 06/01/2023

The contact owns a 2016 Fiat 500X. The contact stated that while attempting to start the vehicle using the Push-to-Start button, the engine failed to crank or start. The vehicle was started after the fifteenth attempt. Additionally, the contact stated that the brake pedal was extremely firm and difficult to depress while attempting to start the vehicle. The vehicle was taken to a dealer, but the cause of the failure was not determined. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 80,000.

POWER TRAIN,ELECTRICAL SYSTEM,FUEL/PROPULSION SYSTEM — Filed 05/01/2026

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

UNKNOWN OR OTHER — Filed 04/05/2025

I received a letter stating that there was a recall emissions/catalyst efficiency,I have called a fiat dealership several times to get this fixed and it never did, now I am seeing that there is no recall now. So I'm confused on what's going on. U90 is the emissions recall number.and letter said there are others w80

UNKNOWN OR OTHER — Filed 01/02/2026

I am submitting this complaint to report a failure related to an emissions recall repair. The vehicle identified by VIN [XXX] was fully operable, properly maintained, and in excellent condition prior to an emissions recall repair performed by an authorized dealership. Immediately after the recall “fix” was completed, the vehicle began experiencing serious operational problems and became undrivable. The servicing dealership towed the vehicle and attempted an additional repair. After the vehicle was returned, it failed again on its first use and is now completely inoperable. Despite the fact that this failure occurred only after the recall repair, the dealership and manufacturer are refusing to assume responsibility for towing and correction unless the owner pays to have the vehicle towed more than 75 miles to another location. We do not believe it is appropriate for the owner to bear the cost of correcting a defect that arose directly from recall work. Another authorized dealership has advised that responsibility remains with the dealer that performed the recall repair. The original servicing dealer has now stated they are “not responsible,” despite having performed the recall work. This situation has left the vehicle undrivable and created a significant hardship, and we believe it represents a recall remedy failure. I spoke with the service manager at the dealership and he said it is up to me to prove that they did the damage to the car. The vehicle was operable before the recall repair The vehicle became inoperable immediately after the recall repair The recall is still showing as open The dealer already acknowledged a problem by towing it once and attempting a second repair That establishes prima facie responsibility. In plain English: Cause-and-effect is already evident. We are requesting that NHTSA document this issue and review the manufacturer’s handling of this recall repair. Thank you for your attention to this matter. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

POWER TRAIN,ELECTRICAL SYSTEM,ENGINE — Filed 12/22/2025

The contact owns a 2016 Fiat 500X. The contact stated that while driving at an undisclosed speed, the transmission unintendedly shifted from drive(D) to neutral(N). The RPM became elevated; however, the vehicle failed to accelerate as intended. While driving approximately 15 - 20 MPH, the vehicle went into LIMP Mode. While in LIMP Mode, the contact coasted to the side of the road and waited for several minutes before continuing to drive. The failure had occurred twice. Additionally, the check engine warning light illuminated intermittently. The vehicle had been taken to a certified mechanic, who determined that the transmission had failed and needed to be rebuilt. The dealer also diagnosed that there was a failure with the instrument cluster. The instrument cluster lights were cleared; however, the transmission was not repaired. The check engine warning light remained illuminated. The contact was made aware of NHTSA Campaign Number: 16V529000 (Power Train), for the transmission for the same year, make, and model. The manufacturer was made aware of the failure and confirmed that the VIN was not included in the recall and opened a case. The failure mileage was approximately 144,000.

POWER TRAIN — Filed 12/25/2025

Car suddenly slowed down while driving on Christmas Day. This was a very unsafe situation because I was on the highway in traffic traveling at 70 miles per hour and the car suddenly slowed down which could have resulted in an accident leading to harm. A warning light then came on to service transmission right as the car slowed down. I Tried to step on the gas pedal and it would not accelerate. There was no warning light prior to this incident. The car was towed to the dealership the next day. On the following Monday we were told the transmission needs to be completely replaced after they completed a diagnosis test. Enclosed is a pic of the invoice.

ENGINE — Filed 11/10/2025

While driving, the vehicle suddenly shut off completely in the middle of the road, forcing me to come to a full stop and make several attempts before it restarted. During the incident, all electrical power was lost—I was unable to use hazard lights or blinkers, and I’m unsure if the brake lights worked when pressing the pedal. This created an extreme safety risk to both myself and other drivers. About a month earlier, the same issue occurred and the dealership diagnosed it as a “battery, fuse, array” problem, replacing the battery. The same issue has now returned, and the dealership has identified it as a MultiAir actuator failure. The vehicle is a Fiat 500X equipped with the 2.4L Tigershark engine, which has known problems with the MultiAir system. The car has only around 60,000 miles and is currently at an authorized Chrysler/Fiat dealership, available for inspection upon request. The problem has been confirmed by the dealer, no warning lights appeared before the failure, and a technical case has been opened with Fiat/Stellantis corporate.

FUEL SYSTEM, GASOLINE — Filed 03/24/2025

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.