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The U.S. average retail price of diesel inched up 0.7¢ to $3.243 a gallon while oil prices were flat.

Talks between the U.S. and California on auto emissions standards have made little progress since President Donald Trump told his agencies to pursue a deal, according to a top state official, who’s holding out hope that the Environmental Protection Agency will get more involved.

The U.S. Environmental Protection Agency has suspended through the end of 2019 a cap on the number of glider kits that a single builder may produce, the agency told Transport Topics July 9.

Daimler AG halted deliveries of one type of diesel engine for trucks over their emissions setup, less than a month after recalling 774,000 autos with prohibited shutoff devices.

Scott Pruitt has resigned as administrator of the Environmental Protection Agency after a deluge of damaging revelations about his spending, travel and a condo rental that prompted Republican lawmakers to distance themselves and question his continued effectiveness.

JEFFERSON CITY, Mo. — A state legislator from southwest Missouri has filed a lawsuit in an effort to stop a proposed gasoline tax increase from appearing on the state’s November ballot.

Crude soared above $75 a barrel in New York for the first time since 2014 on signs global supply outages outweigh OPEC’s pledged production rise.

The U.S. average retail price of diesel rose 2 cents to $3.236 a gallon, while the price of a barrel of oil climbed amid a tightening of inventory.

Nikola Motor Co. has awarded a contract to Nel Hydrogen for 448 electrolyzers — which separate water into hydrogen and oxygen — and associated fueling equipment, as Nikola prepares to roll out a fueling network in the United States of 30 stations to support commercial and passenger vehicles operating on hydrogen fuel cells.

Musket Corp. announced it opened a diesel exhaust fluid wholesale bulk rack in Greensboro, N.C.