The Energy Department "lacks statutory authority" to apply a multiplying factor that boosted the miles per gallon equivalent ...

The US Department of Energy’s updated methodology for calculating electric vehicles’ fuel efficiency was scrapped by a ...

Iowa Attorney General Brenna Bird declared victory as the Eighth Circuit court ruled a 2023 rule she said bolstered electric ...

A U.S. appeals court on Friday voided a Biden administration-era rule that changed the calculation of the ...

The North American Council for Freight Efficiency has released its 2024 Fleet Fuel Study highlighting an increase in the adoption of fuel-efficient technologies by fleets. Here ...