S-Class 250 CDI BlueEFFICIENCY Road Video ... Mercedes has unveiled the S 250 CDI BlueEFFICIENCY at the 2010 Paris Motor Show. As the name suggests, the car is powered by a four-cylinder diesel engine which produces 150 kW (204 PS / 201 hp) and 500 Nm (369 lb-ft) of torque. While this sounds like a sign of the apocalypse, the S 250 accelerates from 0-100 km/h in 8.2 seconds and hits a top speed of 240 km/h (149 mph). More importantly, fuel consumption is 5.7 liters per 100 kilometers (41.2 mpg US) while CO2 emissions are 149 g/km.
