BMW have revealed the first official pictures of the 2011 520d EfficientDynamics. The new car, true to the EfficientDynamics tag will boast extraordinarily low CO2 emissions (119gm/km) and great fuel efficiency. The 520d ED will achieve the feat of being clean, green and mean at the same time by employing some clever tech. BMW have made the final drive ratio quite tall to enable the new 520d