NHTSA Complaint #11637703 — 2017 LINCOLN MKC

The engine failure in my 2017 Lincoln MKC was caused by coolant intrusion, a known design flaw affecting thousands of 2015-2019 models. This serious issue presents a severe safety risk to drivers and passengers. Symptoms Engine light illumination Shakiness and sputtering at startup Misfire on cylinder #3 Rapid coolant loss Intermittent engine light warnings Battery-like symptoms (vehicle not starting, clicking sounds) Violent shaking during 1 startup Diagnosis and Repair Attempts Replaced component for cylinder #3 misfire Installed new spark plugs Refilled coolant reservoir Battery checked and jumped Final diagnosis: Engine replacement required due to coolant intrusion Issue confirmed as a known design flaw in Lincoln MKC Safety Risks The coolant intrusion problem poses significant safety risks: Potential for sudden engine failure while driving, especially at high speeds Risk of losing control of the vehicle due to engine seizure Danger to occupants and other road users in case of unexpected breakdown Confirmation and Inspection The issue was reproduced and confirmed by both Monro Auto and the Lincoln dealership. The vehicle was inspected by the Lincoln dealership, which determined the need for a complete engine replacement The warranty company approved the engine replacement, acknowledging the severity of the problem Warning Signs Intermittent Check engine light illumination Occasional shaking and sputtering at startup Rapid coolant loss without visible leaks Intermittent starting issues resembling battery problems One episode of violent shaking at startup All of these symptoms appeared sporadically Manufacturer Responsibility Despite being aware of this design flaw and even developing a new engine to address the issue, Lincoln has not issued a recall. This lack of action raises serious concerns about the manufacturer's commitment to customer safety. The problem is widespread, as evidenced by numerous reports on Lincoln MKC forums, indicating a systemic iss