NHTSA Complaint #11713017 — 2022 HONDA ACCORD

The engine cylinder head developed a crack causing coolant leak, causing the coolant system to lose fluid. The leak originated from a hairline crack in the cylinder head, which has been confirmed by an independent, certified mechanic. The vehicle remained drivable initially, but a loss of coolant could lead to engine overheating, and catch on fire or smoke creating a potential safety hazard for the driver and others on the road. The vehicle was inspected at an authorized dealership at the direction of the manufacturer, which performed a teardown to diagnose the issue. After this inspection, additional engine components (timing chain and head gasket) were identified as damaged, though these failures were not present prior to the teardown. Other users facing similar leak issues were treated the same by dealership blaming other component issue and disregarding the visible crack. This defect appears to affect multiple vehicles of the same engine, as reported by other owners nationwide. Warning signs included coolant loss, which could escalate into a larger safety risk if not addressed. I have attached few user complains but if needed I can provide lot more user complaints around the nation as it is never ending.