NHTSA Complaint #11547856 — 2015 FORD FUSION

My wife's Ford Fusion started having issues in 2021. I was responding to check engine lights for things like spark plugs, O2 sensors, variable valve solenoids, etc. Eventually, as these check engine lights continued, in 2022 I took the car into the dealer to have it diagnosed. They told me that the whole engine needed to be rebuilt. They obviously see this problem frequently, as the woman I spoke to had lots of familiarity with the specific problem with these Ecoboost engines. She said that engine coolant will leak into the cylinder and cause lots of problems like the ones I was experiencing, and can even lead to a fire. The only solution they had was to rebuild and replace the cylinder head for $10,000. It was not long after the visit to the dealer that the car starting misfiring. It is very violent and the engine is running on only 3 cylinders most of the time. It is not safe to drive anymore.