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Environmental Groups Sue Over Trump’s Lowered Fuel-Economy Standards

By Drooid · Oct 3, 2026, 3:58 AM UTC · How we work

Summary

Story summary

U.S. President Donald Trump’s administration was sued by environmental groups over lowered fuel-economy standards.
The rule sets a 2031 fleet-average of about 34.9 mpg, down from a projected 50.4 mpg.
The suit targets Transportation Secretary Sean Duffy and NHTSA administrator Jonathan Morrison in the U.S. Court of Appeals.
David Pettit of the Center for Biological Diversity warned the rollback will raise drivers’ costs and increase air pollution.

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Story summary

U.S. President Donald Trump’s administration was sued by environmental groups over lowered fuel-economy standards.
The rule sets a 2031 fleet-average of about 34.9 mpg, down from a projected 50.4 mpg.
The suit targets Transportation Secretary Sean Duffy and NHTSA administrator Jonathan Morrison in the U.S. Court of Appeals.
David Pettit of the Center for Biological Diversity warned the rollback will raise drivers’ costs and increase air pollution.