I can't really see the mileage being too different then what is being reported for the European version - afterall its mainly a hp versus weight issue. (although Americans are typically overw..... oops, better not go there!) So I can't see it being more then 2 mpg off the 40/50/60+ (city/combined/hwy) figures by tweaking for US emission standards - hopefully. Now price, that may be another story, but Smart promises that the dealers are to stick to the MSRP - whatever that will winds up being.