So GM's announcement that it has raised the industry's volumetric efficiency standard by some 60 percent is of more than passing interest, even though it's still a long way from where it needs to ...

General Motors Co. and Stellantis NV paid a combined $363 million in civil penalties for failing to meet U.S. fuel efficiency standards dating back to the Trump administration, according to ...

General Motors, in the awkward position of introducing a new lineup of full-size sport utilities with oil prices near record highs, stressed the vehicles' fuel efficiency during a media preview ...