 In contrast, in a region that is completely reliant on natural gas, the PEV would be equivalent to a gasoline-powered car rated at .The study concluded that for 45% of the U.S. population, a plug-in electric car will generate lower equivalent emissions than a gasoline-powered car capable of combined , such as the Toyota Prius and the Prius c. The study also found that for 37% of the population, the electric car emissions will fall in the range of a gasoline-powered car rated at a combined fuel economy of , such as the Honda Civic Hybrid and the Lexus CT200h.Only 18% of the population lives in areas where the power-supply is more dependent on burning carbon, and the greenhouse gas emissions will be equivalent to a car rated at a combined fuel economy of , such as the Chevrolet Cruze and Ford Focus.