Automakers side with Trump administration on weaker US fuel economy rules
Major carmakers backed the administration in its legal fight with California and other states over the revised vehicle fuel economy standards.
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what happened
The Alliance for Automotive Innovation, which counts GM, Toyota, Volkswagen, Hyundai, Ford and Stellantis among its members, on Monday sided with the Trump administration in a lawsuit. California, New York and about two dozen other states, cities and counties filed the challenge last month against the sharply lower fleet-wide target of 34.9 miles per gallon by 2031, compared with 50.4 mpg approved under Joe Biden in 2024, according to Reuters.
The Transportation Department estimates the rule cuts average compliance cost per vehicle by $1,289 but raises fuel costs by more than $1,600 over the vehicle's life. It also projects US gasoline consumption rising 4.6% through 2050, about 121 billion gallons more than under the Biden rules. The American Petroleum Institute backed the rules as well.
why it matters
For oil markets, the estimate points to stronger gasoline demand over the long run rather than an immediate shift in supply and demand balances. For automakers, looser standards reduce pressure to electrify fleets, which affects how they plan product and capital spending. The outcome of the court case remains uncertain.
market impact
Oil: projected higher US gasoline demand supports Brent and WTI prices over the long term.
- Brent pressure up — projected rise in US gasoline use through 2050 lifts long-term oil demand
- WTI pressure up — higher gasoline consumption in the US supports demand for domestic crude
tags
instruments
sources
- Automakers back Trump administration's rollback of US fuel economy rules — Reuters, 3 November 2026 at 00:14 UTC
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