New engines are also shown on MB Germany's web page
http://www.mercedes-benz.de/content/germany/mpc/mpc_germany_website/de/home_mpc/passengercars/home/new_cars/models/e-class/_s212/facts/technical_data.html. It is perplexing that the newer BlueTec engine is more expensive and yet worse off in nearly every specification; but this is all done in the interest of reduced NOx emmisions - see
Consumer Reports Cars Blog: How Mercedes.
The bit that I am ****** about is the upgrade to the standard E350 BlueEfficiency engine, which has 15% more torque and 12% more power; with reduced CO2 and improved economy. It grates me that this is within weeks of my taking delivery.
I understand manufacturers improve engines regularly; my 2007 XC90 is trapped in a £400+ VED band - a year later Volvo revised _only_ the CO2 figure for the car (£200;ish VED band). Every other figure stayed the same; except the car's weight, which _increased_!
This VED banding system is IMO driving bad manufacturer behaviour - the figures are so massaged it is ridiculous. The headline CO2 is achieved at unrealistic driving conditions; and the car could pollute like hell when driven normally.
Understanding how and why doesn't stop me feeling
though!