Stuttgart, Aug 11, 2014 - Innovative engineering from Mercedes-Benz once again provides trendsetting impetus in passenger car diesel technology. The world's pioneer in diesel technology from Stuttgart is the first to replace the hitherto conventional aluminium pistons in passenger car diesel engines with a new high-tech generation of pistons made of steel. The advantages they bring, when combined with the innovative NANOSLIDE® cylinder bore coating technology, include even lower fuel consumption and even lower CO2 emissions.