 I have owned 5 BMW's over the last 30 years, 2 were good cars 3 were not, the current 2008 X3 is the worst of the lot. body water leaks, engine oil leaks, sensor failures, water pump failure, ignition coil failures, transmission failure, you name it and I have had to have it fixed all before the car reached 91000 miles. I purched the car from BMW as a certified used car and had trouble with it from the beginning. The Dealer was of little help they just kept telling me the transmission was fine UNTIL the extended warrenty ran out, then it was " It failed and you need to replace it " at a cost of 8 grand. BMW is not the Ultimate Driving Machine, they are the Ultimate Maintenance Machine