Two problems related to engine head gasket failure have been reported for the 2007 BMW 328. The most recently reported issues are listed below.
Engine oil gasket, valve leak. Its engine part and customer wont touch at all. BMW should recall this. BMW dealer quotes $2. 7k for the fix(actually its replacement of gasket and seal).
Oil leaking from head gasket. The aluminum bolts used in the engine warped causing leak. Had to replace head gasket and all headbolts.