According to the Mercedes S 250 CDI BlueEFFICIENCY is the most economical luxury sedan in the world. The car will get an average of 5.7 liters per 100 kilometers, equivalent to a carbon dioxide emissions of 149 grams per kilometer. The 2.2-liter diesel making 204 hp and generates a maximum torque of 500 Nm at 1,600 rpm. In 8.2 seconds ticked off the sprint from zero to 100 km / h, top speed is achieved at 240 mph. The engine is also made of C-and E-class know where it is used with identical performance.