EPA considers tougher auto emissions rules

ByABC News
March 4, 2009, 11:24 PM

— -- A simmering fight over auto emissions flares anew Thursday, and the outcome could boost the price of your next new car.

The U.S. Environmental Protection Agency begins hearings Thursday to decide whether to reverse its 2007 decision blocking proposed California clean-air regulations that would have the effect of a dramatic rise in fuel economy requirements.

Revisiting the Bush-era decision was among the first orders from President Obama.

Mary Nichols told a packed EPA hearing just outside Washington that if the state is unable to control the gases blamed for global warming from cars and trucks, its other air pollution problems will get worse.

The head of California's air pollution agency said the federal government made a mistake when it blocked his state from setting its own standards for controlling auto emissions.

If the California rules limiting what are called greenhouse gases (ghg) are allowed to take effect, they would apply in that state, as well as in 13 others and the District of Columbia, which have adopted its rules. Together they account for about 40% of new vehicle sales. Seven states say they are near adopting California's rules or soon will be.

Reducing ghg emissions requires using less gasoline or diesel fuel. To meet California standards, an automaker's cars and small SUVs would have to average about 40 miles per gallon in 2015. For larger SUVs, minivans and full-size pickups, they call for the equivalent of about 25 mpg.

By contrast, new federal fuel economy requirements contained in the 2007 Energy Bill mandate a 35 mpg industry average for cars and trucks by 2020.

The California system "allows companies to 'over-comply' in trucks and swing credits over to cars," which would help Detroit makers, who sell more trucks, to comply, says Roland Hwang, vehicles policy director at the Natural Resources Defense Council. NRDC favors imposing California rules nationwide.

The Union of Concerned Scientists, which backs the California rules, says current technology, such as continuously variable transmissions and variable engine valve timing, can help meet the standards but could add $700 to $1,400 to the price of a car or truck.