The contact leased a 2025 RAM 1500. The contact stated that while driving at an undisclosed speed to park the vehicle inside the residence's garage, the vehicle unintendedly accelerated, crashed through the rear wall of the garage, and into a snowbank, where the vehicle came to a stop. No warning light was illuminated. The garage rear wall and lawn care equipment were damaged. No injury was sustained. The vehicle was towed to an independent mechanic, where it was repaired. The contact stated that while the technician was conducting a post-repair test-drive, the failure reoccurred when there was a sudden acceleration. The technician was able to stop the vehicle. The contact was advised to tow the vehicle to the dealer for further inspection. The dealer was made aware of the failure and requested a manufacturer engineer inspection. The engineer inspected the vehicle at the same independent mechanic. The contact was informed that the vehicle had passed the inspection, and there was no electrical issue. The vehicle was then towed to the dealer; however, the failure was not duplicated. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 5,200.