The Thuringian subsidiaries of Daimler AG in Kölleda and Arnstadt are key elements of the global powertrain production network, whose lead plant is in Stuttgart-Untertürkheim. The engine factory of MDC Power GmbH in Kölleda has been assembling four-cylinder gasoline and diesel engines for compact vehicles from Mercedes- Benz since 2003. The fifth assembly hall was completed in 2015, increasing the production area by 35,000 m2. In 2013 the plant began producing an AMG engine for the first time. The engines are handcrafted in accordance with AMG’s traditional “one man, one engine” principle. More than 6 million engines have been produced in Kölleda to date. The component plant of MDC Technology GmbH in Arnstadt works on crankcases for Mercedes- Benz engines, for which it uses the NANOSLIDE® technique. In this process, the cylinder bores are coated and made extremely smooth. The modification of the crankcases helps to make the engines lighter and decrease fuel consumption, thus contributing considerably to reducing CO2 emissions.