NHTSA Complaint #11563334 — 2015 FORD FUSION

Previously, about 5-6 times the car experienced sputtering and then stalling shortly after a warm engine restart. After 2 tries, the car would continue running. No check engine. No codes stored. Final time (before a scheduled shop visit) it stalled on a busy 4-lane road at rush hour and would not restart. Wife managed to manuever into the middle turn lane. Would not restart. Car displayed (unhelpfully) to check the owners manual. Towed to Firestone who found bad spark plugs (in particular cylinder 3) showing coolant leakage. Firestone seemed to be aware of the systemic issues (said replacing plugs was not solving the root problem, but they don't do engine replacements. Estimated that the car might run correctly for maybe a year. Car stalled again 3 days later). Coolant level was low. My experience seems similar to many others (ie., 2013-19 engine coolant leak). Car at dealership.