One problem related to engine shut off without warning has been reported for the 2005 BMW X5. The most recently reported issues are listed below.
The 2005 X5 BMW v8 has given me all kinds of problems. From replacing engine, transmission, catalytic converter, valve gaskets to fuel injector and ignition problems. The car shuts off while still on drive and sometimes in motion. Car has all types of problem and continues to drain me financially.