One problem related to engine head gasket leaking has been reported for the 2005 BMW X5. The most recently reported issues are listed below.
The contact owns a 2005 BMW X5. After the vehicle was parked, the contact noticed that the vehicle was leaking oil without warning. The vehicle was taken to a dealer where it was diagnosed that the valve cover gasket was leaking oil onto the engine and needed to be replaced, along with the timing chain cover, alternator bracket, and oil pressure switch. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 81,000.