2020 BMW X5 drivetrain & axles problems

While parking the vehicle in a head-on parking spot, the car suddenly accelerated without warning and hit a wall. The car then went into reverse and sped up rapidly until it hit a concrete patio on the other side of the parking lot. The brake pedal was depressed with substantial force the entire time the vehicle was moving but the vehicle would not stop moving. The brakes did not engage. I do not recall how the car went from drive to reverse.

The contact owns a 2020 BMW X5. The contact stated that the vehicle was taken to a dealer for routine maintenance and it was discovered that there was a coolant leak and that there was a failure with the front differential failure, and that the A/C unit was leaking. The leaking valve was replaced but the differential was not repaired. The contact stated that the failure was a known failure with the vehicle. The manufacturer was made aware of the failure. The failure mileage was 70,000.