Mercedes BlueTEC Models Get First Diesel Consumer Tax Credits In an important step toward flooding our shores with torquey, fuel-efficient engines, Mercedes' BlueTEC SUV s have been granted the first consumer tax credits for diesel vehicles awarded by the EPA/IRS. The Detroit News reports the Mercedes ML 320 BlueTEC, R 320 BlueTEC, and GL 320 BlueTEC, all on sale starting October 1, have achieved 50-state emissions status and are capable of traveling 600 miles on a tank of fuel. The certification finally allows them hallowed status thanks to the Qualified Alternative Motor Vehicle Credit, something that hasn't always been the case . So, how much can you recoup on your investment? That depends: ML 320 BlueTEC buyers get a $900 tax credit, while those opting for an R320 BlueTEC can get $1,550. The GL 320 BlueTEC is the big winner with up to an $1,800 tax credit depending on an individual's tax status. We're glad to see incentives for fuel-efficient vehicles finally extending into the diesel realm. Since the price premium for a diesel is generally less than for a hybrid, credits should make diesels even more competitive; now if we could just do something about the price of diesel fuel. [Detroit News ]