2020 Lexus NX Engine Problems

“I am writing to formally express my concern regarding ongoing issues with my vehicle following repairs performed at Crown Lexus in Ontario. In December 2024, I experienced rough idling, slow acceleration with vibration, fluctuating RPMs, and stalling. The check engine light turned on, and an error message instructed me to pull over and contact a local dealer due to engine/transmission trouble. I promptly brought the vehicle to Crown Lexus, where it was diagnosed with a faulty cylinder head requiring full replacement. The repairs were completed at that time. …”

“I am submitting this complaint to report a significant safety defect in my Lexus vehicle. Without any prior warning or history of mechanical problems, the vehicle experienced a sudden and severe loss of engine power while I was merging onto a busy highway. The vehicle rapidly decelerated despite continued acceleration input, forcing me to navigate to the shoulder while surrounding traffic was traveling at high speed. This unexpected loss of power created an immediate and substantial risk of a collision and posed a serious danger to myself and other motorists. …”

“The contact owns a 2020 Lexus NX300. The contact stated that while operating the vehicle, the check engine warning light remained illuminated. The message “Electronic Fuel System Failure” was displayed, and the vehicle stalled on several occasions. The vehicle was taken to the local Auto Zone, and the contact was informed about the fuel system failure. The vehicle was later taken to the local dealer, who diagnosed that the fuel pump needed to be replaced. The vehicle was not yet repaired. …”

“The contact owns a 2020 Lexus NX300. The contact stated that while driving at an undisclosed speed, the vehicle stalled. The message Reduced Speed was displayed, and the check engine warning light was illuminated. The contact pulled over and was able to restart the vehicle. The vehicle was towed to the dealer, who determined that the cylinder head needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 72,283.”

“While driving at interstate highway speed at approximately 70 mph in heavy rush hour traffic, the vehicle suddenly made a popping sound and immediately lost all engine power. The accelerator became unresponsive, and the vehicle rapidly decelerated without warning. I was forced to coast across lanes to the shoulder to avoid a collision. The engine shut down completely and the vehicle would not restart. This created a serious risk of injury or death due to loss of power in high-speed traffic. The vehicle had to be towed and is currently undrivable. …”