The contact owns a 2020 BMW 750I. The contact stated that while driving in a parking lot at slow speeds, the check engine warning light illuminated. The vehicle was taken to the local dealer where it was diagnosed that the expansion tank had cracked and leaked on the fuel rail and the injector had failed. The vehicle was repaired. The manufacturer was contacted and covered the injector repair and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 48,000.