I drive a Mercedes Benz 300D and 240D Because of the ability to use biodiesel! I haven't been to a petrol pump in so long! My Dodge Ram runs great on it too! Most places let me get my waste oil for free and a couple pay me to take it. The one thing i don't get is everyone elses fuel economy claims. My 240D gets 40 MPG and my 300D gets 34 to 35 MPG.