One problem related to engine belts and pulleys has been reported for the 2007 BMW X3. The most recently reported issues are listed below.
Tl the contact owns a 2007 BMW X3. While driving various speeds, oil leaked onto the head gasket of the vehicle. The contact stated that the leak entered onto the serpentine belt. BMW of mainline (225 bala avenue, bala cynwyd, pennsylvania 19004, (610) 668-2200) was made aware of the failure and diagnosed a failure with the mass air flow. The dealer replaced the serpentine belt, but the failure recurred. In addition, the contact stated that the vehicle stalled on various occasions and became completely inoperable. The contact referenced NHTSA campaign number: 17v683000 (engine and engine cooling). The manufacturer was not made aware of the failure. The failure mileage was unknown.