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

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 ...

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

Fuel efficiency is an important consideration for every driver. With rising fuel prices and environmental concerns, it's essential to take steps to reduce fuel consumption. Here are several tips ...

The average fleet fuel economy of auto manufacturers would need to hit nearly 60 mpg by 2032, a move that may force OEMs to provide more electric vehicles.

The automatic start/stop function shuts off the engine when your car is idling. But just how much does this technology really save you on gas?

In America, bigger is better, especially when it comes to cars. While the country has made major strides in improving vehicle fuel economy and promoting electric and hybrid models, the public can ...