*Taken from the customer letter sent out to all M3 owners.* We wrote to you in March 2003 regarding the engine in your M car. At that time BMW found certain engines experienced premature failure due to contamination of the engine lubricating system during assembly in combination with unfavorable tolerances in the engine oil pump. BMW conducted a service action to remedy this issue and extended the warranty for all internal mechanical engine components that are lubricated by engine oil for a period of 6 years or 100,000 miles, whichever comes first. Our ongoing quality testing revealed that the connecting rod bearings installed in your vehicle were not manufactured to BMW quality standards. As a result, the connecting rod bearings are susceptible to overheating and subsequent premature failure if the vehicle is operated at higher engine speeds over an extended timeframe.