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Jacobs Vehicle Systems’ cylinder deactivation technology delivered a “host of performance-enhancing benefits” in a recent independent validation, the company announced, including raising exhaust temperature and improving fuel consumption.

Saudi Arabia seems to have made good on its promise to cut oil production by a record amount in June.

The national average retail price of diesel rose for the fourth consecutive week, half a cent to $2.43 a gallon, the Energy Information Administration reported June 29.

House Democrats on June 30 will issue an ambitious plan to combat climate change, a move intended to reassure their base of supporters but that’s sure to inflame opponents on the right.

After months of empty roads, lockdowns were easing, and people were getting behind the wheel again. Then the virus struck again.

Chesapeake Energy Corp., the archetype for America’s extraordinary shale-gas fortunes, filed for bankruptcy, becoming one of the biggest victims of a spectacular collapse in energy demand from the virus-induced global lockdown.

Four automakers backing a California effort to curb tailpipe emissions will break with some big rivals in the legal battle over the Trump administration’s relaxation of fuel efficiency standards.

California environmental regulators approved a measure that within a few years will require truck manufacturers to transition a percentage of their sales in the state from diesel trucks to electric zero-emission vehicles.

Oil prices rose after Russia slashed exports of its flagship crude Urals to the lowest in at least 10 years, signaling the determination of Moscow to work with its partners at OPEC+ to eliminate an oil glut.

The company that bought the aging Lordstown, Ohio, auto factory from General Motors last year unveiled an electric pickup truck it plans to build at the plant, one of many new electric light-trucks manufacturers plan to start selling over the next two years.