(Source: Bloomberg)

Cars and light trucks will be required to meet a U.S.fuel-economy average of 27.3 miles per gallon for 2011 models, a 2 mpg increase from the previous year’s level, the Transportation Department said.

The 8 percent gain announced today in Washington carries out a 2007 law intended to curb emissions and fuel use. The change, being put in place asGeneral Motors Corp. and Chrysler LLC face possible bankruptcy, isn’t as aggressive as the 27.8 mpg target that President George W. Bush proposed in April 2008.

“This isn’t going to be a stretch for them to meet this,” David Kelly, former acting head of the National Highway Traffic Safety Administration under Bush, said of automakers. New-car fuel economy already averaged 31.3 mpg by 2007, NHTSA said in today’s rule.

Cars must average 30.2 mpg, up from 27.5 currently, under the rule. Light trucks will average 24.1, up from 23.5 mpg for 2010 models. The December 2007 law called for vehicles to meet a 35 mpg standard by 2020 models, a 40 percent increase from the average in 2008.

“The bad news is that the 27.3 mpg standard means that they’ll have to make up for it in future years,” said Dan Becker, director of the Safe Climate Campaign, a group in Washington that works for environmentally “clean” cars. “The goods news is that they have promised that they will.”

President Barack Obama’s administration had a March 31 deadline for setting the standard, giving the industry about 18 months to prepare its 2011 models to meet the requirement. Bush never issued his proposed standard before he left office.

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