History of the diesel car featured an aluminium block, DOHC chain driven valvetrain, common rail direct injection and variable geometry turbocharger. In Spring 2005, Mercedes-Benz unveiled their first application of a mass-produced aluminum block diesel engine for passenger vehicles and commercial use. While aluminum is traditionally considered of inferior strength and temperature resistance to withstand diesel applications, Mercedes engineers made extensive use of CAD/CAM design to arrive at an aluminum block that would meet with Mercedes' testing and reliability standards. First use was in 2006 model-year vehicles in the E-Class sedan and ML-class and GL-class SUVs. Similar in weight () to the five-cylinder it replaced,
Biddle Motor Car Company equally high aspirations of the company for its customer base. Biddle was one of more than 2000 car makers, located all over the USA in the first quarter of the twentieth century, who failed to survive the intensifying pressures of mass-production and national distribution in the late teens and the intense competition imposed by massive corporate consolidations in the early 1920s. Biddle Motor Car Company The Biddle Motor Car Company manufactured luxury automobiles in Philadelphia, Pennsylvania from 1915 to 1922. "Information, rather than Persuasive Sales Talk" was the advertising slogan of the company, which was noted for its conservative advertising.