WASHINGTON — The federal government took its first formal step to regulate global warming pollution on Thursday by issuing final rules for greenhouse gas emissions for automobiles and light trucks.

The move ends a 30-year battle between regulators and automakers but sets the stage for what may be a bigger fight over climate-altering emissions from stationary sources like power plants, steel mills and refineries.

The new tailpipe rules, jointly written by the Transportation Department and the Environmental Protection Agency, set emissions and mileage standards that would translate to a combined fuel economy average for new vehicles of 35.5 miles per gallon by 2016. Most drivers will see lower mileage figures in actual driving.

The rules are expected to cut emissions of carbon dioxide and other heat-trapping gases about 30 percent from 2012 to 2016.