NHTSA Complaint #11680788 — 2013 FIAT 500

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.