Improving gasoline fuel economy and strong demand for trucks and SUVs has led federal regulators to eliminate the 54.5 mpg corporate fuel economy target for...

Three federal agencies on Monday dropped the 54.5 mpg corporate fuel economy target for 2025, which would ease the burden on car and truck manufacturers to...

The EPA expects that automakers will raise fuel economy 10 mpg higher than the current fleet average by model year 2025.

The 2.7L demonstration engine will be integrated into a drivable prototype in 2018 and development engines will also be available for automakers.

Vowing to end the "assault on the American auto industry," President Donald Trump promised to reopen a federal review of fuel economy standards that was...

The Trump administration is reopening a federal review of Obama-era fuel economy rules covering the 2022 to 2025 model years, and expanding the review to...

Michigan's U.S. senators are backing a proposal that would allow automakers to apply credits for model years as far back as 2009 to help them meet future...

Automakers beat U.S. fuel-economy standards for the 2015 model year for the fourth year in a row, reaching an average of 29.4 miles per gallon for passenger...

The U.S. Environmental Protection Agency has proposed leaving in place its emissions standards for light-duty vehicles through 2025 in a move that's...

A coalition of 13 attorneys general led by New York's Eric Schneiderman told the Trump administration it could expect a "vigorous" legal challenge to any...