I drive a leased 2024 Porsche Macan that has been serviced exclusively by Porsche of [XXX]. In May 2026, I brought the vehicle in because the engine was revving/racing while I was driving locally at slow to normal speeds. I also reported that the vehicle initiated sudden collision-avoidance braking when no vehicles or obstacles were present. I was told no problem could be found or replicated. On the morning of XXX while driving about 25–30 mph, the engine again began revving loudly and continued even while I was stopped at a traffic light. This was the same issue I had reported in May. At the next light, I shifted into Park and then back into Drive; the revving temporarily subsided. I stopped briefly at a drive-through pharmacy and then drove directly home. As I pulled into my driveway with my foot on the brake, the vehicle suddenly accelerated sharply on its own and struck my home, causing significant damage to the house and vehicle. Smoke came from the front of the vehicle. Because I live in an attached home and my neighbors were inside, I attempted to back the vehicle a few feet away. With my foot on the brake, I shifted into Reverse, and the vehicle again accelerated sharply, traveling backward at high speed into the street. I steered away from a parked car and a brick wall, pulled the emergency brake, and shut off the vehicle. I exited and called 911. Police arrived within minutes, photographed the scene, and arranged for the vehicle to be towed because it was blockin