Former Volkswagen AG CEO Martin Winterkorn has again rejected any blame for a 2015 scandal in which the company used a so-called defeat device to undermine carbon emission testing.

Long Beach, Calif.-based startup Stax Engineering has deployed pollution-capturing tech at multiple ports for the first time, servicing ships at the ports of L.A., Long Beach and Oakland.

California is being sued over its new emission laws mandating that companies there and out of state report their supply chain emissions and mitigation efforts.

Senior Republicans are seeking to undo emissions targets the Federal Highway Administration is requiring of state transportation agencies.

Bay Area startup touts electric vehicle's ability to boost fuel economy while reducing emissions. Story by Keiron Greenhalgh.

Powering America’s Commercial Transportation (PACT) — launched by Daimler Truck North America, Navistar Inc., and Volvo Group North America — is setting out to educate policymakers, regulators and other stakeholders in Washington and around the nation on the zero-emission infrastructure needs of the trucking industry. 

DETROIT — More than 4,700 auto dealerships across the U.S. urged President Joe Biden in a letter Jan. 25 to halt the EPA's efforts to enforce stricter vehicle-pollution standards.

Volkswagen AG lost another lawsuit in a German court over its software fix for engines in the wake of the diesel scandal that tarnished the reputation of Europe’s biggest carmaker.

Cummins agreed to pay a $2 billion penalty as part of a Department of Justice investigation that determined devices that bypassed emissions sensors had been installed on Cummins engines.

A judge has denied a challenge to the South Coast Air Quality Management District's landmark rule intended to clear Southern California skies of exhaust tied to the logistics industry.