Mercedes-Benz recently rolled the fifth of eight diesel models total planned over the next few years. Audi on the other hand– based on the success of the A3 TDI and the Q7 TDI is planning to launch oil-burning versions of the A6 and A8 as well. These models will be available in the states.

Studies found that, in 2007, 52% of gas stations in the United States were offering diesel, compared to 35% a decade earlier.

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[Source: Bloomberg]