US to finalize sharply lower vehicle fuel economy standards
PUBLISHED Sep 26, 2026, 7:46 PM ET
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The U.S. Transportation Department finalized sharply lower vehicle fuel economy standards through 2031, reversing prior federal mandates requiring rapid adoption of electric and high-efficiency fleets. The National Highway Traffic Safety Administration established a fleetwide average requirement of 34.5 miles per gallon by 2031, down from the previous target of 50.4 miles per gallon. President Donald Trump announced formal approval, stating the rule eliminates administrative burdens on domestic manufacturing. Transportation Secretary Sean Duffy emphasized that the policy tailors vehicle production to consumer demand. Federal projections indicate the change will reduce average new vehicle purchase costs by approximately $930, while increasing total fuel consumption by roughly 100 billion gallons through 2050 and raising national carbon dioxide emissions by about five percent. The regulation retroactively revises the 2022 baseline and establishes minimal annual increases. The action follows congressional legislation halting penalties for non-compliance and eliminating consumer tax credits for electric vehicles.
By Yusra M. | JQJO News
Timeline of Events
- 2025 — Congress passed legislation halting federal penalty collections for fuel economy standards and ending EV tax credits.
- On September 26 2026 Reuters reported the U.S. Transportation Department finalized sharply lower vehicle fuel economy standards.
- On September 27 2026 NHTSA fleetwide average requirement stands at 34.5 miles per gallon by 2031.
- 2031 — Target year for the finalized 34.5 miles per gallon fleetwide average requirement.
- 2050 — Federal projection horizon for cumulative fuel consumption and emissions impacts.
News Intelligence
- Immediate US impact: Lowers estimated new vehicle purchase costs by approximately $930 and alters compliance structures for U.S. automakers.
- Possible long-term US impact: Increases cumulative fuel consumption by roughly 100 billion gallons through 2050, raises national fuel spending by $185 billion, and increases carbon dioxide emissions by about five percent.
- Most affected groups: U.S. automakers, automotive consumers, and environmental regulatory stakeholders.
- Reader priority: Consumers evaluating new vehicle purchase costs versus long-term fuel expenditure implications.
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US to finalize sharply lower vehicle fuel economy standards
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