On or about July 29, 2025, the check engine light illuminated in my 2019 Lincoln MKC Sport with a 2.0L EcoBoost engine. A mechanic inspected the vehicle on August 4, 2025, and confirmed coolant is entering cylinder one, likely due to a blown head gasket or, less likely, an engine block crack. Symptoms include coolant loss, potential misfiring, and the check engine light activation. The issue was identified through diagnostic testing (e.g., borescope inspection or compression test, pending specific results). No external coolant leaks were observed, indicating an internal engine failure. The vehicle has 89,516 miles and was purchased three months ago on May 5, 2025, from Ford City in Champaign, Illinois. Safety Concerns: Coolant intrusion into cylinder one risks engine misfiring, rough idling, or sudden power loss, which could cause engine stalling or failure during operation. This poses a serious safety hazard, as it may lead to loss of vehicle control, particularly at highway speeds or in traffic, endangering the driver, passengers, and other road users. The defect compromises the reliability of the 2.0L EcoBoost engine and requires costly repairs. Additional Context: -?? No known history of severe overheating exists, but maintenance records prior to purchase are unavailable. -?? The vehicle has no aftermarket modifications. -?? No crashes or injuries have occurred, but the issue emerged shortly after purchase, suggesting a possible pre-existing defect. -?? Similar coolant intrusion issues have been reported in earlier 2.0L EcoBoost engines (e.g., 2013-?"2016 Ford models), and this may indicate a recurring defect in the 2019 MKC. -?? I urge NHTSA to investigate whether this engine issue warrants a recall due to its potential safety impact.

- Bloomington, IN, USA

The coolant/ transmission fluid is found to be leaking into the engine. Now I to pay for a new engine when I have had the car 1 year and 8 months. I still owe $22,000 on the vehicle, and while it-??s said that Lincoln knew about this problem, no recall was ever issued. I am 3,000 miles over the warranty, but there are no security message popping up to say this is a problem. The dealership said nothing is firing of to warn of a problem in the computer either. I had the oil changed 1 month ago but was not told or warned of an engine defect either ( I was under mileage that time). I am asking for assistance to replace this engine. I feel there should have been a recall to replace the models effected. Others have had their engines replaced free of charge I asking to extended that same courtesy free of charge. And a recall should be issued for theses bad engines when the problem was known prior to sale. I have purchased Ford vehicles in the past and but I was married at the time but he too has a LMKC right now. Please advise on some type of assistance. Thank you

- Detroit, MI, USA