US automaker General Motors said on Tuesday it will unveil 25 new models before the end of 2011.

President and CEO Fritz Henderson said during a webcast that the Chevrolet Volt, GM's extended-range electric vehicle due out in November 2010, will deliver an estimated city fuel economy of 230 mpg, or 25 kilowatt-hours per 100 miles.

"When the Chevrolet Volt extended-range electric vehicle rolls off the assembly line late next year, it will be the first mass-production automobile to achieve triple-digit fuel economy, with an expected 230 mpg in the city," he announced.

The US Environmental Protection Agency (EPA) declined to confirm the figure, which was based on a draft testing procedure. GM said the calculation was based on more than one vehicle's electrical charge, since the average driver travels far less than 100 miles in a single day.

"EPA does applaud GM's commitment to designing and building the car of the future: an American-made car that will save money and significantly reduce our dependence on foreign oil and create good-paying American jobs," EPA spokeswoman Cathy Milbourn said.

In his statement, Henderson also confirmed that Cadillac was developing an entry-level luxury sports sedan as an addition to the growing domestic and global market for smaller luxury sedans.

(Xinhua News Agency August 12, 2009)