President Donald Trump announced Saturday that he has approved new federal fuel economy standards — and with them, Trump ends Biden EV mandate requirements that pushed automakers toward electric vehicles. “These new Standards will take the waste out of building cars in America. That means LOWER PRICES, saving families thousands on a new, beautiful, and safe car,” Trump wrote in a Truth Social post, according to Reuters, which first reported the announcement.
The post is the culmination of a year-long campaign. The administration said last month that sharply lower standards were imminent, reversing the prior administration's push to force automakers to build more fuel-efficient vehicles. Under President Joe Biden, the government had sought to prod automakers to build more electric vehicles to meet rising fuel-efficiency standards. Saturday's announcement closes that chapter — and opens a new one in the fight over what Americans drive, what it costs, and who pays the difference.
What Trump announced on Saturday
The announcement itself was characteristically brief — a social media post, not a Rose Garden ceremony — but the policy behind it has been months in the making. In a December White House event, Trump had already declared he was terminating the Corporate Average Fuel Economy (CAFE) standards imposed by the Biden administration, calling them “burdensome” and blaming them for “tremendous upward pressure on car prices.” A White House official said at the time that reducing fuel economy requirements for model years 2022 through 2031 could save Americans an estimated $109 billion, which the administration presented as a key justification for the rollback.
Saturday's post moves the policy from proposal to approval. During remarks when the plan was unveiled, Trump said the new rules would save families $1,000 or more on the average cost of a new vehicle, framing the standards as an affordability measure. Over the course of his second term, he has signed an executive order striking down the electric vehicle mandate, cancelled tailpipe emissions standards, and revoked the emissions waiver that let California set its own stricter rules — which he said allowed “California communists” to “ruin the entire nation of automobiles.” The fuel economy approval is the largest single piece of that deregulatory drive.
What the new standards actually change
The numbers tell the story. The Biden-era rule, finalized by the National Highway Traffic Safety Administration (NHTSA) in June 2024, required fleetwide fuel efficiency to reach about 50.4 miles per gallon by model year 2031, with increases of 2 percent per year for passenger cars from 2027 through 2031 and for light trucks from 2029 through 2031. The prior administration projected the rule would save Americans more than $23 billion in fuel costs while reducing pollution.
The Trump standards slash that trajectory. Under the new rule, automakers would need to reach an average of just 34.5 miles per gallon for cars and light trucks in model year 2031 — roughly where the industry already sits — with increases of only 0.5 percent per year through model year 2026 and 0.25 percent each year through 2031. Model year 2027 serves as a “bridge year” to let the industry adapt, and the rule rewrites standards retroactively for model years 2022 through 2031.
Three structural changes matter as much as the headline number. First, NHTSA no longer assumes any adoption of electric vehicles when setting targets; the standards are, in the rule's words, “founded on light-duty vehicles powered by gasoline and diesel fuels,” a category that includes non-plug-in hybrids. Second, the system that let automakers trade fuel-economy credits — under which EV-focused manufacturers like Tesla and Rivian sold credits to rivals whose fleets fell short — would be eliminated starting in 2028, along with certain credits for fuel-saving technologies. Third, NHTSA proposed reclassifying many vehicles currently regulated as light trucks — a category covering most popular SUVs — as passenger cars, a change legacy automakers including General Motors vehemently opposed even as they cheered the rest of the rollback.
Why this matters: the $1,000-now versus $185-billion-later tradeoff
Here is the honest arithmetic both sides would rather you not do at the same time. The administration's math: NHTSA's preliminary analysis estimates the weaker standards would reduce average upfront vehicle costs by around $900 to $1,000 — the “LOWER PRICES” in Trump's post. For a family stretching to afford a new car, that is real money, and it arrives at the moment of purchase, when the pain is felt most acutely.
The critics' math, drawn from the same agency's analysis as reported by multiple outlets: roughly 100 billion additional gallons of gasoline consumed by 2050, about $185 billion in added fuel costs for American drivers, and a 5 percent rise in carbon dioxide emissions. Fuel is the tax you pay every week for a decade; the sticker price is the tax you pay once. Whether the rollback saves a household money depends almost entirely on how long it keeps the car and how many miles it drives — which is to say, the working commuters the policy claims to help are precisely the people most exposed to the fuel-cost side of the ledger.
That distributional twist deserves emphasis. New-car buyers skew wealthier; lower-income households buy used, where the effects arrive years later and are harder to trace. The $1,000 saving is front-loaded and visible; the extra dollars at the pump are diffuse and deniable. Politically, that asymmetry is the whole game: the benefit is claimable in a Truth Social post, the cost is spread across a decade of fill-ups nobody will attribute to a 2026 rulemaking.
Winners and losers
The winners are easy to name. Detroit's legacy automakers — Ford, GM, Stellantis — backed the change, and GM's vice president of global regulatory affairs, David Strickland, said the proposal “appears to go a long way toward aligning the regulations with market trends,” arguing the EV transition “must account for market and consumer realities.” For manufacturers sitting on profitable gasoline truck and SUV lineups, weaker standards mean less forced spending on electrification they have found rocky and unprofitable. Car dealers, who make their money moving today's inventory, cheer too.
The losers are more interesting. Tesla and Rivian lose a revenue stream: both have sold regulatory credits to competitors for years, and the 2028 elimination of credit trading takes that market away. American EV startups, already facing weakening domestic demand even as global EV sales surge — led by China — lose the regulatory tailwind that made their business plans pencil out. And then there is the competitiveness question nobody in Washington wants to dwell on: while the United States relaxes efficiency pressure, Chinese manufacturers are scaling electric vehicles for the world. A decade from now, the American auto industry may discover it saved $1,000 per car and ceded the century's defining automotive technology.
California governor Gavin Newsom, a longtime antagonist of the rollback, argues it will force Americans to spend more on fuel and worsen air quality in frontline communities — a reminder that transportation remains the largest source of U.S. greenhouse gas emissions, and that the climate cost of 100 billion extra gallons does not vanish because the rule calls it “economy.”
The politics: affordability season
None of this is happening in a vacuum. With midterm elections approaching, affordability is the coin of the realm — and the administration is spending it aggressively. The “LOWER PRICES” framing lands in an economy where consumer sentiment sits at just 48.1, with inflation expectations climbing, even as business activity runs at a more-than-five-year high. Voters feel squeezed at the checkout and the pump simultaneously; a policy that promises cheaper cars speaks directly to that squeeze, whatever the fine print says about fuel bills.
There is also a quieter political logic. Every major CAFE revision in modern history has been litigated, and this one will be too — California-led states and environmental groups are all but certain to sue, just as industry groups sued Biden's rules. A court fight keeps the issue alive through the midterms, which suits a White House that would rather campaign on “we cut your car payment” than defend the emissions arithmetic. The retroactive rewrite to model year 2022 adds another wrinkle: automakers plan products on five-to-seven-year cycles, and regulatory whiplash — tighten, loosen, litigate, repeat — is itself a cost, one the industry's own analysts have flagged even while welcoming the direction.
What happens next
The immediate next steps are procedural and legal. Final rules must be published in the Federal Register, and the lawsuits — from states, from environmental groups, possibly from the EV makers losing their credit market — will follow within weeks, not months. Watch the courts first: an injunction could freeze the new standards before model year 2027, the designated “bridge year,” even begins.
Then watch 2028, when credit trading ends. That is the sleeper provision — less visible than the mpg number, more consequential for the industry's structure. Without a credit market, laggards cannot buy compliance; they must build it. Paradoxically, that could push some automakers toward electrification faster than the weak mpg targets suggest, simply because there will be no other way to comply.
And watch the showroom. If the administration is right, cheaper new cars will move metal and voters will reward it. If the critics are right, the savings will evaporate into fuel tanks while China's EV makers consolidate a global lead the United States once assumed was its birthright. The bet Trump made on Saturday is that Americans grade presidents on the sticker, not the pump. The next decade of fill-ups will render the verdict.
Sources and further reading
- Reuters (Jasper Ward), “Trump says he approved fuel economy standards ending Biden EV mandate” — reuters.com, September 26, 2026
- Reuters via WNCY, “Trump says he approved fuel economy standards ending Biden EV mandate” — wncy.com, September 26, 2026
- USA Today, “Fuel economy rules coming soon in latest regulatory slash from Trump” (GM's David Strickland comments; S&P Global Mobility's Stephanie Brinley on the car/truck classification fight) — usatoday.com, September 2, 2026
- The Well News, “Trump Announces ‘Reset’ of Fuel Economy Standards” (December White House event; 34.5 mpg target; bridge-year and credit-trading details) — thewellnews.com
- CSP Daily News, “Trump rolls back Biden-era fuel economy standards” (White House $109 billion savings estimate; C-SPAN video of December announcement) — cspdailynews.com
- New Zealand Press, “Trump Proposes Rollback of Fuel Economy Standards” (NHTSA analysis: ~100 billion extra gallons by 2050, ~$185 billion in fuel costs, 5% CO2 rise; Gov. Newsom criticism) — newzealandpress.com
Reporting basis: Fixed September 26, 2026 snapshot. Figures on costs, fuel consumption, and emissions are drawn from NHTSA analyses and administration estimates as reported by the outlets above; final rule text had not been published in the Federal Register at the time of writing.