Trump's CAFE rollback cuts the projected 2031 fleet average to 34.9 mpg

The board-deck version is short. Automakers get room to build more gasoline vehicles ^[8], and their main trade group welcomes it. "The standards finalized under the previous administration effectively required a switchover to electric vehicles that was out of step with market realities and customer demand," said John Bozzella, CEO of the Alliance for Automotive Innovation ^[17]. The Transportation Department puts the savings to Americans at $138 billion over five years ^[9].

Transportation Secretary Sean Duffy described a larger change. "Thanks to President Trump's leadership, we have finally ended the illegal mandate that forced automakers to produce more expensive electric vehicles that American families didn't want," he said ^[15]. ABC News reported that no federal policy has mandated that auto companies sell EVs ^[16].

The board-deck version leaves out how long the rule lasts. Sean Tucker, managing editor at Kelley Blue Book, said carmakers "can't move fast enough to design new cars for a regulation likely to last just two to three years" ^[20]. It is one editor's forecast, but it states the trade-off in front of product committees. This quarter's decision is whether to pull back an electric program and keep the money. If tighter targets return, the later consequence is restarting that program on a deadline the company did not choose.

The headline number also overstates how far compliance moves. The drop from 50.4 to 34.9 mpg is 15.5 mpg, or about 31 percent ^[12]. But automakers had already stopped facing fines for missing federal mileage standards ^[10]. I think the final rule mostly changes the direction of federal policy on paper, because the penalty for missing the old target was gone before Monday.

Neither report addresses supplier contracts or commercial fleet purchasing, so the rule's effect on parts makers and fleet buyers is not yet known.

Buyers now face a price gap on EVs and a rising price for fuel. The average EV cost $54,813 in August against $50,089 for the average new car, according to Kelley Blue Book ^[3]. That $4,724 premium ^[13] no longer has a federal purchase credit to offset it ^[10]. Gasoline averaged $4.48 a gallon on Monday, up from less than $3 earlier this year, as the war with Iran disrupts fuel supplies ^[4]. "Less fuel-efficient cars mean more gas burned, spending more at the pump and dirtier air in our communities," said Katherine Garcia, who directs the Sierra Club's Clean Transportation for All campaign ^[5].

Whether buyers ever see the $1,300 the department promises ^[8] is disputed. It is about 2.6 percent of the average new-car price ^[14]. Patrick Anderson, CEO of Anderson Economic Group, called the estimate "entirely achievable" ^[19]. Ray Shefska, co-founder of CarEdge, disagreed. "Automakers are not going to lower prices as long as they sell 15.6 million to 16.2 million new cars annually while their profit margins increase due to relaxed government fuel economy standards," he told CBS News ^[18]. When the 2024 standards took effect, NHTSA said lifetime fuel savings from efficient vehicles would more than offset their higher upfront cost ^[7].