California to stop buying from automakers that supported Trump on emissions

Although the statement does not mention GM, Toyota or Fiat Chrysler by name, the new policy prohibits state purchases of vehicles made by these companies and a handful of others, represented by the Global Automakers lobbying group, a spokesman for Mr. Newsom confirmed Monday .

California ahead will mainly buy cars from Ford, Honda, Volkswagen and BMW. In July, these companies filed with California when they signed an agreement to follow California's stricter standards, which are close to the original Obama-era rules.

Also on Friday, California filed its second lawsuit against the Trump administration over the recall of the state's legal authority to set tougher pollution standards. The recall was jointly promoted in September by the Department of Transport and the Environmental Protection Agency. The state filed a lawsuit against the Department of Transportation in September, and then followed up last week with its case against E.P.A.

It was not clear what impact California's new purchase ban would have. The California government has about 51,000 cars, but buys only 2,000 to 3,000 cars a year, according to data provided by the state. Of the vehicles it owns, about 14,000 are made by Ford, 10,000 are made by G.M., 4,000 are made by Fiat Chrysler and 1,200 are made by Toyota.

Around 17 million cars and light trucks were sold throughout the United States last year.

The prohibition on new purchases does not apply to any public safety vehicles including California Highway Patrol cars, which allows states to continue to buy muscular vehicles such as the Fiat Chrysler Dodge Charger, according to Newsom spokesman.

California's package of Ford, Honda, Volkswagen and BMW embarrassed the Trump administration, which attacked the move like a stunt. The Department of Justice then opened an antitrust investigation of the four car manufacturers on the grounds that their agreement with California could potentially restrict consumer choice.

Since the opening hours of his administration, Trump has boasted that his return of car pollution rules will help both car manufacturers and car buyers. The Obama-era standard would have required automakers to build vehicles that achieve an average fuel economy of 54.5 miles per gallon by 2025, which would eliminate about six billion tonnes of carbon dioxide pollution, one of the leading causes of global warming, across the globe the life of the vehicles.