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,
History of the diesel car engine, as the Fiat and Austin had Bosch mechanically controlled injection. In the writers experience the Audi 100 TDI was very troublesome and the engine code "AAT" is often known as the difficult Audi . The electronic control of direct injection really made a difference in terms of emissions, refinement and power. All earlier generation car direct injection diesel engines benefit greatly from the use of biodiesel fuel, which reduces emissions and greatly improves refinement without engine modifications, provided they use compatible 'Viton' type rubber in their fuel systems. The diesel car markets are the same ones who pioneered various