WASHINGTON – President Barack Obama will issue new fuel efficiency standards and pair them with a broader goal of reducing pollution from vehicle tailpipes, marking the first time limits on greenhouse gases will be linked to federal standards for cars and trucks.

Officials familiar with the administration’s discussions say Obama will unveil the new standards on Tuesday. The officials spoke on condition of anonymity because the official announcement had not been made.

California, 13 other states and the District of Columbia have urged the federal government to let them enact more stringent standards than the federal government’s requirements. The states’ regulations would cut greenhouse gas emissions by 30 percent in new cars and trucks by 2016.

Officials said Tuesday’s announcement moves toward the 30 percent goal by 2016, starting with model years 2011 and beyond.

The proposal is expected to coordinate two separate standards for fuel efficiency and greenhouse gas emissions from vehicles, aiming for cars that achieve higher miles per gallon and have lower polluting air conditioning systems, said Roland Hwang, the vehicles policy director for the Natural Resources Defense Council. The environmental group has discussed the upcoming changes with the White House in recent weeks, he said.

Hwang said he expected the greenhouse gas standard would be set to an equivalent of nearly 35 miles per gallon for the vehicle fleet by 2016.

A 2007 energy law requires car makers to meet at least 35 mpg by 2020, a 40 percent increase over the current standard of about 25 mpg. Passenger car requirements have remained unchanged at 27.5 mpg since 1985, drawing complaints from environmental groups that the government has been slow to push automakers to produce more fuel-efficient vehicles.

Automakers have sought a single, national standard and argued that a patchwork of regulations will hurt an industry already in dire economic straits and do little to address global warming.

Obama’s move also would effectively end litigation between states and automakers, who sought to block state-specific rules. The new federal rules would prompt automakers to drop their lawsuit. Two car companies who have been part of the litigation, General Motors Corp. and Chrysler LLC, have received billions in government loans during a dramatic downturn in car sales and weakened economy.

A March 2008 decision prevents states from setting their own limits on greenhouse gas emissions from automobiles, but Obama has ordered the U.S. Environmental Protection Agency to reconsider the ruling. California and the other states have asked the EPA for permission to set a standard for reducing greenhouse gases from automobiles.

Michigan Gov. Jennifer Granholm, a Democrat who is being considered for the Supreme Court vacancy, will be at the White House for the Tuesday event on auto emissions standards, said an administration official who spoke on condition of anonymity because details of the event had not been announced.

California Gov. Arnold Schwarzenegger, a Republican, will be in Washington for an announcement on California’s request regarding federal auto emissions standards, Schwarzenegger spokesman Aaron McLear said. He declined to elaborate.

WASHINGTON – President Barack Obama ordered the government Monday to re-examine whether California and other states should be allowed to have tougher auto emission standards, a clean break from Bush administration policy.

Jumping into the seemingly never-ending national energy debate, Obama also directed his administration to get moving on new fuel-efficiency guidelines for the auto industry in time to cover 2011 model-year cars.

“For the sake of our security, our economy and our planet, we must have the courage and commitment to change,” Obama said in his first formal event in the ornate East Room of the White House.

“It will be the policy of my administration,” he said, “to reverse our dependence on foreign oil while building a new energy economy that will create millions of jobs.”

California and at least a dozen other states have tried to come up with tougher emission standards than those imposed by the federal government, but Obama said that “Washington stood in their way.” The president wants the Environmental Protection Agency to take a second look at a decision denying California – and the other states that want to follow its model – permission to set its own tailpipe emission standards.

More broadly, Obama sought to show he was not waiting to put his stamp on energy policy, which has both near-term implications on the sagging economy and long-range effects on pollution, climate change and national security.

“Year after year, decade after decade, we’ve chosen delay over decisive action,” Obama said. “Rigid ideology has overruled sound science. Special interests have overshadowed common sense. Rhetoric has not led to the hard work needed to achieve results – and our leaders raise their voices each time there’s a spike on gas prices, only to grow quiet when the price falls at the pump.”

The Clean Air Act gives California special authority to regulate vehicle pollution because the state began regulating such pollution before the federal government got into the act. But a federal waiver is still required; if the waiver is granted, other states can choose to adopt California’s standards or the federal ones.

In 2007 the Bush administration’s Environmental Protection Agency denied California’s waiver request, gaining praise from the auto industry but touching off a storm of investigations and lawsuits from Democrats and environmental groups who contended the denial was based on political instead of scientific reasons.

Obama on Monday directed the EPA to re-examine the decision. That does not yet overturn anything. But still, the states’ wanting their own power considered it a victory.

“The federal government must work with, not against, states to reduce greenhouse gas emissions,” Obama said. He added: “The days of Washington dragging its heels are over. My administration will not deny facts; we will be guided by them.”