Trump Strongly Relaxes CAFE Standards: A Shift That Reduces Environmental Requirements

The Trump administration is bringing together two of its recurring adversaries, the environment and the automotive sector. Trump is proposing a significant rollback of restrictions on vehicle fuel efficiency, the CAFE standards.

• The administration bows to pressure from some automakers
• Standards would drop from 50.4 mpg to 34.5 mpg for 2031
• Environmental and public health impacts will be major

A major revision of fuel consumption standards

The American administration has announced an in-depth review of the CAFE standards (Corporate Average Fuel Economy), which regulate the average fuel consumption of new vehicles. These rules, described as “costly and illegal” by the president, will be brought back to levels considered realistic for gasoline and diesel engines. The White House argues that the previous targets would have “effectively created a mandate for electric vehicles,” something the American market had not requested.

According to the administration, the new direction aims to “return the CAFE standards to levels that can actually be reached with gasoline or diesel vehicles,” a stance far less ambitious than the targets previously adopted. Officials claim that a rapid tightening of the standards would have increased the average price of new vehicles and forced technological changes “that consumers did not ask for.”

What the new regulatory framework includes

The Department of Transportation indicated that the reform, presented under the name Freedom Means Affordable Cars, calls for a minimal annual increase in fuel efficiency standards through 2031. For cars, the increase would be limited to 0.5 percent per year between 2023 and 2026, then reduced to 0.35 percent in 2027 and to 0.25 percent between 2029 and 2031. Light trucks would follow a similar path, with a 0.5 percent increase at the start, a peak of 0.7 percent in 2027, and then a drop to 0.25 percent near the end of the period. Once applied, this trajectory would lead to an average of 34.5 mpg for the 2031 model year, compared with 50.4 mpg planned under the Biden administration.

Numbers that fall far short

The administration estimates that loosening the restrictions will reduce the cost of vehicles by about $1,000 when purchasing a future vehicle. This analysis, however, ignores the issue of higher fuel consumption, which would mean a more expensive fuel bill over the vehicle’s lifetime.

In addition, the administration mentions, without supporting studies, that this $1,000 in “affordability” will allow more Americans to buy new vehicles. This, they claim, will lead to the removal of more “old” vehicles considered less safe, according to Trump. Based on this reasoning, the administration states that this action could save precisely 1,567 lives and prevent more than 250,000 accident-related injuries by 2050.

Musk cannot be pleased

Another major change: the elimination of the CAFE credit market starting in 2028. This decision will have a direct impact on electric vehicle manufacturers, especially Tesla, which relied on selling credits to generate a significant portion of its revenue. For now, Elon Musk has not commented on this new orientation from an administration with which he is closely aligned. In 2024, Tesla reportedly received about 2.8 billion dollars in credits.

The government also wants to reclassify crossovers and small SUVs as cars, which will artificially raise the compliance average, since these vehicles generally consume less fuel than the light trucks they were previously compared with.

An attack on electrification

This reform is part of a series of decisions aimed at dismantling several measures that encouraged electrification. The elimination of federal tax credits for electric vehicles and the revocation of California’s authority to impose its own emission standards deeply reshape the American regulatory landscape.

Automakers expressed cautious support, praising a regulatory framework they see as better adapted to today’s market. “Today is a victory for common sense and affordability,” said Jim Farley, Ford’s chief executive officer. For Stellantis, this reorientation brings requirements back “to real market conditions” while promising to support policies that are “environmentally responsible.”

It is not new that American manufacturers, particularly Ford and Stellantis, have complained about restrictions. Their business model is essentially based on selling full-size pickups, a segment where it is difficult to contribute to a net reduction in fuel consumption. GM, with its Ultium platform, is taking the move toward electrification much more seriously by offering a wide range of electric products.

A strong political reaction and sharp criticism

The president claimed that previous rules had misled the public: “People were indoctrinated. It is an ecological scam, and people were paying too much for a car that did not perform as well.” The announcement reignited the debate between environmental regulation and costs borne by consumers.

Environmental groups strongly denounced the decision. According to Will Anderson, a specialist in zero-emission policies, it is “a shell game that funnels money to allies of the oil industry at the expense of Americans’ wallets, their health, and air quality.” He points out that “96 percent of American drivers consider fuel economy at least somewhat important in their purchasing decision.”

Environmental consequences: a clear setback

Softening the standards will have significant long-term effects on emissions. By reducing the target from 50.4 mpg to 34.5 mpg for 2031, the country reduces pressure on automakers to improve energy efficiency or accelerate the adoption of electric technologies. Lower expectations will result in:

More GHG emissions

Vehicles that consume more fuel will emit more CO₂ throughout their life cycle. As transportation is one of the main sources of emissions in the United States, the cumulative impact will be substantial.

A slowdown in green innovation

Eliminating CAFE credits and removing aggressive targets will reduce incentives to develop more efficient engines, more effective hybrids, or affordable electric vehicles. Companies will have less motivation to invest in low-carbon technologies if regulations no longer require it.

Continued dependence on fossil fuels

With reduced regulatory pressure, automakers may prioritize more profitable models, notably SUVs and pickups, rather than accelerating the rollout of electric vehicles. The result will be increased fuel consumption and a more persistent dependence on fossil energy.

Effects on public health

Slowing the pace of efficiency improvements will lead not only to more CO₂ but also to higher levels of overall pollution. This will particularly affect urban areas, where road transport is already the main source of air pollution.

A transition that slows

Although automakers initially supported stricter standards, a combination of lower demand for electric vehicles and high compliance costs has pushed them toward a more cautious stance. Several manufacturers are redirecting their investments toward more profitable gasoline-powered vehicles.

If the reform is adopted after the 45-day consultation period, it would represent a major turning point in American climate policy. It would end one of the main regulatory forces that drove the energy transition in the automotive sector, while redefining the pace at which efficient or electric technologies could take hold.