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Mercedes-Benz S-Class: First-ever 4-cylinder turbodiesel, rated at 41.2 mpg

Mercedes-Benz S-Class

The Mercedes-Benz S-Class will sport its first-ever 4-cylinder turbodiesel, rated at 41.2 mpg.

Mercedes has developed the 2.2-liter CDI four-cylinder turbodiesel engine to deliver a remarkable 369 pound-feet of torque at a mere 1,600 rpm. The high torque, combined with its 204 horsepower, enables the four-cylinder-equipped S 250 CDI BlueEfficiency to run from 0-60 in a reasonable 8.2 seconds. Not too shabby for a diesel, eh? Fuel consumption comes in at 5.7 liters per 100 kilometers, or about 41.2 miles per U.S. gallon on Europe’s generous testing cycle; CO2 emissions trickle out at a class-leading 149 g/km. Though Mercedes has no plans to offer the turbo’d four in U.S.-bound S-Class models, the mere existence of this diesel mill, coupled with the fact that it is found in the company’s flagship model, shows us that the drive for better fuel efficiency affects even some of those top-shelf luxo-barges.