WASHINGTON -(Dow Jones)- Two Democratic U.S. lawmakers from Michigan said Wednesday they would push legislation to provide more federal subsidies for consumers who purchase plug-in hybrid electric cars.

The U.S. already provides tax credits of up to $7,500 to consumers who purchase battery-powered cars. The program is limited to 200,000 cars per manufacturer.

Rep. Sander Levin said in a statement he would introduce a bill to lift the cap to 500,000 vehicles per auto maker. His brother, Sen. Carl Levin, will introduce a similar bill in the Senate.

Rep. Levin didn't cite a cost estimate, but the legislation would add billions of dollars in costs to the program. The initiative comes after President Barack Obama reaffirmed his goal during Tuesday's State of the Union address of having 1 million electric vehicles on U.S. roads by 2015.

-Josh Mitchell, Dow Jones Newswires; 202-862-6637; joshua.mitchell@dowjones.com

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