Sales may be down for the world's largest automaker, but fuel economy is going up.

When it introduced the 2010 Toyota Prius at the Detroit Auto Show in January, Toyota promised that the car would get 50 miles per gallon, now the EPA agrees.

According to the Japanese automaker, the official rating for the hybrid will be 49 mpg city/50 highway for a combined rating of 50 mpg. That is a significant increase over the 46 mpg that the current model gets.

The news couldn't come at a better time for Toyota as Honda will soon be introducing the new Insight hybrid which will cost several thousand dollars less than the Prius, but is expected to get a lower EPA rating, between 40-43 mpg.

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