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,
Muntz Car Company Later, this engine would be replaced with a less expensive Lincoln side-valve V8. The car, a sports coupe, was first built in Glendale, but manufacture soon moved to a new factory in Evanston, Illinois. It featured its own unique design, with aluminum body panels and a removable fiberglass top that were manufactured in-house. Other parts (such as the engines) were sourced from other manufacturers. It was capable of 112 mph, a significant achievement for a road car at the time. It was featured on the cover of the September 1951 issue of "Popular Science" (with a Jaguar and an MG).