Mercedes E250 Bluetec concept would get 39 mpg highway

Mercedes-Benz brought the new E250 BlueTEC concept sedan to the New York Auto Show today, showing the type of clean diesel sedan that could follow in the wake of last year's BlueTEC SUV mini-fleet. The E250 BlueTEC boasts a 2.2-liter four-cylinder diesel engine with SCR (Selective Catalytic Reduction) exhaust technology mated to a seven-speed automatic transmission. The small diesel motor produces big power: 369 lb-ft of torque at 1600-1800 rpm. Part of the conceptual clean diesel fun comes from a 25-liter urea solution (AdBlue) tank that sits in the exhaust stream and reduces NOx emissions, which helps make the car 50-state legal. This is key, since the E250 was created just for us Yankees, MB says. The concept would also meet Europe's strict EU6 emissions standards, which won't be enacted until the later part of 2014. Using BlueTEC in the E250 would probably get the car a 28 mpg city and 39 mpg highway rating from the EPA, Mercedes estimates.