Engine noise makes us more nervous than any other automotive sound because noise can mean expense and inconvenience. And, sometimes engine noise is nothing more than a normal dynamic of the engine’s ...

My Subaru Impreza – ‘03 RS model (2.5l) - has begun to make a knocking noise (similar to a diesel engine) during start up in the morning. It slowly fades as the car warms up. The only think I can ...