The debate over vehicle fuel economy standards is intensifying. Last week, U.S. Secretary of Transportation Sean Duffy announced that the government would eliminate penalties for violating federal ...

A key element of Tesla’s profitability has been its ability to generate credits because it makes zero emissions, and sell those credits to more polluting car companies like GM and Ford and ...

U.S. Transportation Secretary Sean Duffy noted in a statement that "the previous administration illegally used CAFE standards ...

In a move intended to reduce new car prices and support domestic manufacturers, U.S. Transportation Secretary Sean Duffy ...

The rules were being rewritten to make “vehicles more affordable and easier to manufacture in the United States,” Duffy said.

The world of long-haul trucking is not known for fuel efficiency. These are huge trucks that pull huge loads, so even the ...

The U.S. Department of Transportation is setting things in motion that will lead to a rollback Biden-Era fuel economy ...

A federal transportation agency is calling Biden’s fuel economy standards illegal and is setting the stage to weaken them ...

Automakers could soon catch a break. Discover how a new Senate proposal aims to eliminate costly fuel economy fines, ...

Congress' new fuel-economy rules could cripple a longstanding Tesla revenue source. Plus: BYD is squeezing out its ...

Musk turned on Trump only after losing green subsidies from House GOP.