UPDATE:  The NYT story is not entirely accurate, and, separately, sources tell me there appears to be a little confusion as to exactly what mpg standard is set for what class of vehicles (see below).

For all those who are worried that the Waxman-Markey clean energy bill represents the alpha and the omega of energy policy, the NYT reports today:

The Obama administration will issue new national requirements for the emissions and mileage of cars and light trucks in an effort to end a long-running conflict among the states, the federal government and auto manufacturers, industry officials said Monday.

President Obama will announce as early as Tuesday that he will combine California’s tough new auto-emissions rules with the existing corporate average fuel economy standard to create a single new national standard, the officials said. As a result, cars and light trucks sold in the United States will be roughly 30 percent cleaner and more fuel-efficient by 2016.

I agree with Dan Becker of the Safe Climate Campaign (and formerly of Sierra club)

“This is a very big deal,” said Daniel Becker

Kudos to team Obama for putting this deal together.  Here are more details:

… the president would grant California’s longstanding request that its tailpipe emissions standards be imposed nationally. That request was denied by the Bush administration but has been under review by top Obama administration officials since January.

The italicized sentence is inaccurate.  California never asked that its emissions standard be imposed nationally, since, of course, it has no right to make such a request under the Clean Air Act.  It merely asked to be allowed to have a separate, tougher emissions standard as the law allows.  Other states may then choose between the California standard and the national standard.

But Mr. Obama is planning to go further, putting in place new mileage requirements to be administered by the Department of Transportation that would match the stringency of the California program.

Under the new standard, the national fleet mileage rule for cars would be roughly 42 miles a gallon in 2016. Light trucks would have to meet a fleet average of slightly more than 26.2 miles a gallon by 2016.

* Here is where there may be some confusion, according to my sources.  I think the mpg numbers are roughly correct — although I wouldn’t be surprised if they are a little off since the standard is actually done in greenhouse gas emissions (CO2 equivalent) per mile (see fact sheet here), not miles per gallon, which opens the door for people to make errors in conversion.  I have not seen the actual numbers.  Also, California defines cars differently than the federal government, so we will have to wait until tomorrow to find out exactly what the different mpgs apply to.