The contact owns a 2021 BMW X5. The contact stated while his wife was reversing the vehicle into the main road when shifting gears into drive, the vehicle began to reverse independently while still depressing on the brake pedal. The contact stated the vehicle ran into two different trees and slashed the front driver's side tire. The contact stated the Park Distance Control (PDC) malfunction warning light was illuminated. No air bags were deployed. The driver did not have any injuries or seek medical attention. A police report was not filed. The contact was able to park the vehicle back into his residence. The contact towed the vehicle to a local dealer, who called the manufacturer. The manufacturer sent their engineers to diagnose the failure. The manufacturer called the contact and was informed it was a human error. The failure mileage was approximately 8,000.