General Motors, Fiat Chrysler, Toyota and many others in the auto industry are siding with the Trump administration in a lawsuit over whether California has the right to set its own greenhouse gas emissions and fuel economy standards.

California sued Friday to stop the Trump administration from revoking its authority to set greenhouse gas emission and fuel economy standards for cars and trucks, enlisting help from 22 other states in a battle that will shape a key component...

The Trump administration's decision to stop California from setting its own emission standards for cars and trucks would undermine the state's ability to convince the world's largest automakers that they should make more environmentally friendly vehicles.

WASHINGTON (AP) — The Trump administration is poised to revoke California's authority to set auto mileage standards, asserting that only the federal government has the power to regulate greenhouse gas emissions and fuel economy.

DETROIT (AP) — Four major automakers have reached a deal with California to increase gas mileage and greenhouse gas emissions standards, bypassing the Trump administration's plan to freeze standards at 2021 levels. Ford, BMW, Honda and Volkswagen are parties to...

New vehicles in the U. S. from the 2017 model year averaged slightly better gas mileage than the previous year, rising to a record 24. 9 mpg, according to an annual report from the Environmental Protection Agency. But the mileage...

The Trump administration is overstating claims of auto safety and reduced costs in justifying its proposal to weaken Obama-era fuel economy requirements that were aimed at making cars more fuel efficient.On Thursday, the Environmental Protection Agency and