NHTSA Complaint #11527261 — 2013 FIAT 500

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 stranded in the middle of the highway. Has the problem been reproduced or confirmed by a dealer or independent service center? - Yes. The dealership has determined the exhaust valves were at fault. The same dealership also had another vehicle with the same issue in the shop at the same time mine was in the shop. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? - Yes, the dealership has inspected the part. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? - There were no prior warning signs to this issue besides a slightly higher idle than usual. Immediately when the issue happened, the check engine light illuminated and started blinking.