2013 Fiat 5 Series engine problems

“In June 2025, while driving my 2013 Fiat Abarth at highway speed, the vehicle suddenly stalled without warning. This happened on one of the hottest days of the year with another person in the car, creating a serious risk of a high-speed collision. The cause was later confirmed by a different Fiat dealership: a port in the intake/PCV system had been left completely uncapped after service at a Fiat dealership in 2024. The mechanic who worked on my car apparently believed this was only a “vent” and not part of the vacuum system — a dangerous misunderstanding that allowed unmetered air into the engine. This disrupted the air/fuel mixture and led directly to the stall. I have written proof from the dealership admitting to the “vent” claim. A competent technician should know the difference between a vent and a vacuum port. Returning a vehicle in this condition is negligence and puts lives at risk. The component is still available for inspection, and I have documentation supporting my claims.”

“Dear NHTSA Office of Defects Investigation, I am filing this formal complaint to report the sale and interstate delivery of a dangerously defective and noncompliant vehicle sold to me by Arlington Auto Group, located at 3621 Columbia Pike, Arlington, Virginia. On [XXX], I purchased a 2013 Fiat 500 (VIN: [XXX] ). The vehicle was delivered to my home in Englewood, Colorado on [XXX]. Within 24 hours of taking possession of the car—and having driven fewer than 100 miles—I had the vehicle inspected by a certified mechanic at The Auto Repair Place in Boulder, Colorado. Their findings revealed multiple severe safety hazards, including: Rear brake pads completely worn to metal-on-metal contact Two bolts missing from the rear passenger wheel A destroyed and leaking turbocharger, which increases the risk of engine failure Inoperable tire pressure monitoring system (TPMS) No Virginia safety inspection documentation provided Additionally, the car had been illegally tampered with to bypass emissions systems, including removal of the catalytic converter and installation of sensor bypass wiring, which also violates federal law and emissions standards. This vehicle was…”

“While driving down the highway, I noticed my engine began to shake violently and began to make a strong knocking noise. The check engine light then illuminated and started blinking, indicating a serious problem. I immediately attempted to pull over because the car was no longer safe to drive. I waited a few hours on the side of the road and had the car towed to a mechanic shop. They told me that there was an engine misfire on cylinder 3. They then pointed me toward the dealership. At the dealership, they found that three cylinders had exhaust valves that were burnt out, and needed to be replaced. What component or system failed or malfunctioned, and is it available for inspection upon request? - The exhaust valves of cylinders 1, 2, and 3. I have photos of what the valves looked like, but may not be able to retrieve the defective valves. I can retrieve an invoice as soon as I receive it. How was your safety or the safety of others put at risk? - Immediately once the issue started, it was no longer safe to continue driving on the highway. If I had continued to drive, it could have started a fire, or the engine could have stopped working, meaning that I would be…”

“TL* THE CONTACT OWNS A 2013 FIAT 500. THE CONTACT STATED THAT HIS CHECK ENGINE LIGHT HAD ILLUMINATED WHILE DRIVING AT 65 MPH. HE ALSO STATED THAT WHITE SMOKE HAD BEGAN EMITTING FROM THE ENGINE. DESPITE THE FAILURE, THE CONTACT WAS ABLE TO DRIVE THE VEHICLE TO HIS RESIDENCE. UPON INSPECTION, THE CONTACT STATED THAT THERE WAS NO OIL IN THE VEHICLE DESPITE A RECENT OIL CHANGE. THE CONTACT ALSO STATED THAT THE TRANSFER PLATE CLUTCH PEDAL HAD FAILED MULTIPLE TIMES DESPITE THE VEHICLE BEING PLACED UNDER NHTSA CAMPAIGN NUMBER: 16V302000 (POWER TRAIN). THE VEHICLE HAD NOT BEEN TAKEN TO A DEALER TO BE DIAGNOSED. THE MANUFACTURER HAD NOT BEEN NOTIFIED OF THE FAILURE. THE VEHICLE HAD YET TO BE REPAIRED. THE FAILURE MILEAGE WAS 47,263.”

“HELLO, I BELIEVE I NEED AN ATTORNEY AND LEGAL ADVICE. I HAVE A DEFECTIVE CAR THAT SHOWS ON THE FIAT DEALERSHIP WEBSITE AS A RECALL. THE YEAR MAKE AND MODEL OF MY CAR HAS A RECALL (2/2013 RECALL N09 REPROGRAM POWERTRAIN CONTROL MODULE) I HAVE HAVE BEEN REPORTED MY ISSUE TO FIAT DEALERSHIP FOR THE LAST THREE YEARS AND WAS TOLD THAT BASED ON MY VIN NUMBER I DO NOT HAVE A RECALL. WHEN I SERVICE MY CAR AT DEALERSHIP THEY JUST TURN OFF MY ENGINE LIGHT. I HAVE NOT BEEN ABLE TO PASS INSPECTION OF MY VEHICLE IN OVER TWO YEARS. MY MECHANIC EXPLAINED TO ME THAT I HAVE A RECALL AND HE CANNOT PASS INSPECTION. I AM AFRAID TO DRIVE MY CAR, BUT CANNOT SELL IT OR TRADE IT IN DIE TO THE ENGINE LIGHT ERROR. I HAVE A RECORD OF ALL OF MY RECEIPTS. THIS STARTED IN JANUARY 2018. I BELIEVE THAT I SHOULD FILE CHARGES AGAINST FIAT AND WOULD NEED LEGAL ADVISE. THANK YOU.”

“ON JULY 14, 2018, I BEGAN EXPERIENCING TROUBLE WITH MY FIAT 500 SPORT IVE ONLY HAD 2-3 MONTHS. I WAS DRIVING THE VEHICLE IN SOME TRAFFIC WHEN IT SUDDENLY LOSS OF POWER. THE CAR BEGAN SENDING MULTIPLE CODES DEALING WITH THE POWERTRAIN AND TRANSMISSION. RIGHT NOW NO OBD II DEVICES ARE ABLE TO READ THE CODES BECAUSE NOTHING SHOWS. I AM UNABLE TO TRACK MY VEHICLE'S MILEAGE AS WELL. THE CHECK ENGINE AND ESC LIGHTS ARE ON. IF DRIVEN THE TRANSMISSION LIGHT COMES ON AND THE CAR TRIES TO STALL. THE OIL HAS BEEN CHANGED AS REQUIRED. THERE IS VERY ROUGH IDLING. THERE ARE CONSTANT MISFIRES IN ONE OF THE CYLINDERS. I HAVEN'T DRIVEN THIS CAR IN OVER A MONTH. TODAY I HAVE FINALLY MANAGED TO GET IT TO THE DEALERSHIP. I'M NOT SURE WHAT THEY WILL SAY IS THE PROBLEM BUT I FEEL ITS A BAD ECU/BCM/PCM.”