BlueTEC is the keyword for the future of diesel engine technology. Thanks to the highly effective exhaust treatment system developed by Mercedes-Benz, BlueTEC vehicles fulfil the strictest global emissions standards to make them the cleanest diesels in the world. With the E 250 BlueTEC concept, which was created specifically for the North American market, Mercedes-Benz is now demonstrating how BlueTEC technology in the E-Class can be combined with a four-cylinder engine with optimised fuel consumption. When fitted to the 7G-TRONIC seven-speed automatic transmission, the E 250 BlueTEC boasts fuel economy of 28 mpg U.S. in city traffic and 39 mpg U.S.on the motorway (U.S. FE standards). The E 250 BlueTEC concept fulfils the strictest emissions standards, including Bin 5 in the U.S., and would even meet the considerably toughened limits laid down in EU6 legislation not due for implementation until 1 September 2014.