My engine Mercedes lost the power suddenly. After that the engine would stop but then easy to restart and can resume the travel. Very often occurred in my travel. So I became worried to use that car now. Do not believe in that car more. Some mechanics say it happened because the fuel is not running, but they cannot do anything to improve it. I hope you understand my broken English. I don't know what part I should change. I have changed the fuel filter, fuel pump. and service fuel injection but the problem still occurs.