The contact owns a 2011 BMW 750XI. The contact stated that the transmission malfunction warning message was displayed, and the check engine warning light was illuminated. Additionally, smoke was coming from the exhaust pipe. The vehicle was taken to the dealer and diagnosed with a faulty oil pan and valve cover gasket. The oil pan and valve cover gasket were replaced; however, the failure recurred. Additionally, a fuel odor was detected, and the vehicle would shake while driving. The vehicle was taken back to the dealer. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 93,000.