The E.P.A.’s killing of the “endangerment finding” caps a year of deregulation that is likely to make cars thirstier for gas and less competitive globally, experts say.

If you live in a colder climate, there is a feature built into almost every car that can help you do that more quickly.

On paper, the reform appears tidy. The number of rules falls from 511 to 333 and forms from 399 to 190, reinforcing the narrative of simplification. Yet beneath that numerical compression lie changes ...

GM has issued a revised Service Update to address a software-related braking issue affecting certain GM vehicles, including ...