NHTSA Complaint #11710034 — 2018 HONDA ACCORD

My 2018 Honda Accord Touring with a 1.5L turbocharged engine began experiencing intermittent warning lights and error messages starting around 28,000 miles. I reported these issues to a Honda dealership on some visits however in most cases, the warnings were appearing and disappearing prior to my visit. However the error continued to appeared since then. At approximately 55,000 miles, multiple warning lights and error codes reappeared consistently. I took the vehicle to a Honda dealership for diagnosis and was informed that the issue may involve internal engine damage and that a full engine teardown would be required to determine the cause, at an estimated cost of approximately $2,000, before any actual repair could be identified. Seeking a second opinion, I took the vehicle to a different service location and completed a full tune-up at 63,000 including all standard maintenance expected at that mileage. Less than one week after the tune-up, the same warning lights and error codes returned. I took my car back to the same place where I had the tune-up completed and the same error codes appeared indicating the issue was not related to routine maintenance. I began to research online some common issues with my car, I became aware of a class action lawsuit (Bissell v. American Honda Motor Co., Inc.) describing a known defect in Honda 1.5L turbocharged engines where coolant leaks internally near the cylinder head, causing engine misfires, efficiency warnings, and internal engine damage. The symptoms described in the lawsuit closely match the ongoing issues with my vehicle. The repeated warning lights and potential for engine failure raise safety concerns. The issue has been reproducible and unresolved despite inspection and maintenance.