Trump administration lowers vehicle efficiency target
The Trump administration has lowered the required average fuel-economy target for vehicle fleets from 50.4 miles per gallon by 2031 under Biden-era standards to 34.9 miles per gallon. The administration made the change on Monday, according to The Hill, which reported that the earlier rules required automakers to ensure their products used less fuel.

The Trump administration has rolled back car efficiency standards requiring automakers to ensure their vehicles use less fuel, according to The Hill.
The Biden-era standards would have required vehicle fleets to average 50.4 miles per gallon by 2031. The Trump administration lowered that figure to 34.9 miles per gallon on Monday.
The administration argued that the change was needed, though the supplied report does not provide the full argument.
THE QUESTIONS THIS EVENT LEAVES BEHIND
What assumptions were used to set the revised fuel-economy target?
How could the lower target affect automakers’ product decisions?
What conditions would determine whether the revised standard changes fuel use?
Which groups could bear the costs or receive the benefits of the policy change?
YOUR QUESTION
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GLOBAL CURIOSITY MAP · SEPTEMBER 2026