Mercedes’ new M 271 Evo four-cylinder engine will first appear in the C, E, and SLK models

Mercedes’ new M 271 Evo four-cylinder engine will first appear in the C, E, and SLK models

Mercedes Benz is expanding the engine lineup of its new 2010 E-Class by introducing two economical four-cylinder models: the E200 CDI turbodiesel and E200 CGI petrol model. Both cars are labeled as BlueEFFICIENCY models and achieve better than 32mpg in fuel economy.

The diesel powerplant in the E200 CDI BlueEFFICIENCY has a displacement of 2.1L and an output of 136hp (100kW), and achieves as much as 45mpg (5.2L/100km) in fuel economy. The petrol powered E200 CGI BlueEFFICIENCY, meanwhile, delivers up to 184hp (135kW) from its 1.8L engine and achieves a fuel economy of 32.6mpg (7.2L/100km). To further aid fuel economy, the cars also come with engine stop start technology as standard for models equipped with a six-speed manual transmission.

These are all-new four-cylinder powerplants with direct injection. One of the main features of the new diesel engine is latest-generation common-rail direct injection. The likewise new four-cylinder petrol engine with direct injection is fitted with a turbocharger as well as adjustable intake and exhaust camshafts.

As expected, the superior efficiency kills performance, with the E200 CDI turbodiesel taking a pedestrian like 10.2 seconds to reach 60mpg from rest and the E200 CGI not much quicker at 8.5 seconds.

Both models go on sale in Europe this September and are unlikely to be sold in U.S. showrooms.