Coolant intrusion causing engine failure
ENGINE
7 NHTSA complaints · 2024-11 → 2026-09
“On XXX, the engine in my 2019 Lincoln MKZ (Mileage 58,089) with the 2.0L EcoBoost engine suffered a catastrophic, sudden failure while driving. The vehicle began to overheat & run extremely rough, triggering multiple warning lights. It is now inoperable and unsafe to drive”
“My engine has failed at less than 40,000 miles due to coolant leaking into the engine”
“Engine failed due to coolant intrusion into cylinders. This is a known design flaw in this engine”