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 their OM-621 engine was introduced in the 180D. This 2.0 L engine produced at 4,350 rpm. Beginning in 1959, Peugeot offered the 403D with their TMD-85 four-cylinder engine of 1.8 L and , followed in 1962 by the 404D with the same engine. In 1964, the 404D became available with the improved XD88 four-cylinder engine of 2.0 L and . Other cars available with diesel power during this era included the Austin A60 Cambridge, Isuzu Bellel, Fiat 1400-A, Standard Vanguard, Borgward Hansa, and a few others. In 1967, Peugeot introduced the world's first compact, high-speed diesel car, the Peugeot 204BD.