“The benefits of helping Americans drive on less gas should be obvious by now,” he said.

In a statement, the transportation secretary, Sean Duffy, defended the new rules, saying that the Biden administration had “illegally twisted mileage standards to create an electric vehicle mandate — jacking up car prices for American families and forcing manufacturers to produce vehicles no one wanted.”

He added, “This administration understands the freedom of every American family starts with affordable cars.”

The Trump administration’s analysis estimated that its rules would cut car prices by $1,289 in model year 2031, on average. But drivers of those cars would also pay $1,624 more in fuel costs over time than they would have under the Biden-era standards, according to the analysis.

Many automakers opposed the Biden-era rules, saying that they would have required too quick of a shift toward electric vehicles. Auto industry groups have also criticized the constantly shifting standards, which typically tighten under Democratic presidents and loosen under Republicans.

“What the industry needs is long-term regulatory stability that includes balanced, durable and achievable fuel economy standards that continue to reduce emissions and improve fuel economy,” John Bozzella, chief executive of the Alliance for Automotive Innovation, a lobbying group for major carmakers, said of the new rules in a statement on Monday.