2011 328i with only 68k miles. Yesterday one of the two aluminum head bolts snapped off within the engine and knocked the timing chain off the sprocket and blew a hole in the head cover. This car has 10 head bolts with the front two being aluminum. The extended warranty I have covers only lubricated moving internal parts or damage from these parts so none of this damage is covered. Obviously I learned a hard lesson that when they sell these policies and say that your engine is covered they are misleading you. BMW dealer told me to call BMW NA which I did to set up a case in hopes that they will chip in some money for this repair. Regardless of the outcome, this will be my last BMW as they are not as 'bullet proof' as the older models from the 80s and 90s. Anyone else have this problem? If so did BMW help with costs?