The contact owns a 2025 Jeep Grand Cherokee L. The contact stated that while driving 60 MPH, the accelerator pedal was depressed, and the vehicle failed to respond. There were no warning lights illuminated. On a separate occasion, the contact stated that while the vehicle was driven over 60 MPH, the vehicle made an abnormally loud sound coming from the muffler. The contact merged to the side of the road, turned off the vehicle, and after the engine cooled down, the vehicle functioned properly if the vehicle did not exceed 60 MPH. On another occasion, while the vehicle was parked outside a store, the contact went back to start the vehicle, and the brake warning lights illuminated. The vehicle was started; however, the transmission failed to shift into drive or reverse. The dealer was not made aware of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 714.