General Motors

The class-action lawsuit accuses General Motors of using "at least three separate 'defeat devices' to increase engine power and efficiency" in its Duramax diesel engines.

Analysts are watching to see whether the Twitter blasts continue and threatened tariffs emerge. The strategies could save jobs or could hurt the economy if other countries retaliate.

Washington state policymakers wrestled for much of the day Monday whether and how to regulate self-driving cars. Until now, major automakers and...