NHTSA Complaint #11671399 — 2017 LINCOLN MKZ

I purchased this vehicle on November 11, 2024. About one month later, I began experiencing severe problems. The engine started overheating, which marked the beginning of a downward spiral of issues. To address the overheating, a new engine was installed by Murgado Lincoln dealership, which took approximately 48 days to complete. While the new engine resolved the overheating, a serious transmission problem has persisted and worsened. Since I purchased the car, the transmission has been slipping constantly, shifting gears on its own unpredictably, making loud noises under the hood and throughout the entire vehicle. These issues create a major safety hazard, putting me and others at significant risk. On June 25, 2025, I was involved in a hit-and-run incident that likely worsened the vehicle’s condition. During this incident, the side airbags on both sides of my vehicle deployed, but the front airbag did not deploy at all, which is highly concerning and increased the danger during the impact. Additionally, the car has a cracked shock absorber head, likely from the accident, which has led to instability and potential fishtailing. I am now afraid to drive the vehicle due to unpredictable handling and further mechanical failure. The vehicle is available for inspection upon request. These problems have been confirmed and partially addressed by the dealer when the engine was replaced, but the transmission issues have never been fully resolved. There were no specific warning lamps for the transmission before the failure, but the slipping and erratic gear changes started about one month after purchase and have become progressively worse.