BlueEfficiency Diesel Car Models Showcase Mercedes-Benz’ Green Efforts
Presenting two new BlueEfficiency editions of its C and E class cars to the world, Mercedes-Benz announced environmental improvements to its diesel engine at the Geneva Motor Show on March 2, showing that its tagline, “Efficiency meets elegance,” will rely mostly on drive train and engine refinements in the 2011 line.
European customers will be able to buy the new models this fall. The smaller car, the C 220 CDI, is estimated to achieve 52.3 mpg, with CO2 emissions of 119 g/km, while the larger E 250 CDI gets up to 48 mpg, with CO2 emissions of 129 g/km. Both cars have a re-designed 2.2-liter diesel engine, a lighter crankshaft mass, improved turbochargers and oil pressure regulation, and 7-speed automatic transmissions.
Mercedes-Benz now has 60 BlueEfficiency models with improved carbon dioxide emission, including some hybrid models. The company’s emphasis this year appears to be on improving engine efficiency and lowering emissions, rather than switching to new drivetrain technology such as hybrid or EV systems. Overall, Mercedes has cut fuel consumption by 16% for the E250 CDI, and by 6% for the C220 CDI.
Interested in more diesel cars from the Geneva Auto Show? Check out the plug-in version of the 3008 HYbrid4 diesel car from Peugeot. This car is the world's first plug-in diesel hybrid, slated for production in 2012.
Specs on C 220 CDI and E 250 CDI
--both have 4-cylinder diesel engine
--lighter crankshaft (four balance weights rather than eight as in the past)
--exhaust turbocharger with self-regulating compressor
--automatic start/stop system
--new 7-speed automatic transmission in the E 250 CDI
--different rear axle ratio (2.47 instead of 2.65 in past)
--aerodynamic styling, including re-designed front grill