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GAO Table re Plug In efficiencies

Table 1: Estimates of the Percentage Decrease in Carbon Dioxide Emissions from Plug-in Hybrids with 20- or 60-mile All-Electric Range Compared with Gasoline-Powered Vehicles Fuel source used to generate electricity to charge the vehicle

Coal

Natural gas

Low carbon sources (e.g., nuclear or wind)

Plug-in compact car vs. compact gasoline car

4-5

54

85-100

Plug-in SUV vs. gasoline SUV

19-23

61-63

85-100