The contact owns a 2021 Ford Mustang Mach E. The contact stated that while driving slowly in reverse and reversing of a parking space, the vehicle suddenly experienced unintended acceleration and erroneously drove across the street before crashing into an apartment building wall. During the crash, the driver sustained a lower back injury and left arm laceration which required medical treatment. The vehicle was towed to a local body shop. No police report was taken. The cause of the failure was not determined. The manufacturer was notified of the failure. The local dealer was not contacted. The failure mileage was 14,750.