WARREN, MI – General Motors Co. says its ’11 Chevrolet Volt extended-range electric vehicle will achieve 230 mpg (1.0 L/100 km) in the city cycle, according to a new formula from the Environmental Protection Agency for estimating fuel economy.

“The Chevrolet Volt will achieve unprecedented fuel-economy performance,” GM President and CEO Fritz Henderson says during a press briefing here earlier today.

GM also reveals the Volt, which travels 40 miles (64 km) on electric power before relying on a small internal-combustion engine, will achieve an electric efficiency of 25 kw/100 miles (161 km). For the average consumer, Henderson says, that efficiency translates into about $0.40 to recharge off-peak.

"From the data we've seen, many Chevy Volt drivers may be able to be in pure electric mode on a daily basis without having to use any gas," Henderson says. "EPA labels are a yardstick for customers to compare the fuel efficiency of vehicles. So, a vehicle like the Volt that achieves a composite triple-digit fuel economy is a game-changer."

GM also says it will bring a new entry-level luxury-vehicle to its Cadillac brand in 2011, one element of a broad product blitz aimed at revitalizing the beleaguered auto maker. Henderson promises styling, performance and high-tech gadgetry along the lines of its Cadillac CTS sports sedan.

Cadillac also will get a new model of the Buick LaCrosse architecture to replace both the DTS and STS in its lineup. The new model will offer all-wheel drive.

jamend@wardsauto.com