What fuel economy standards did Trump announce?

Trump said he approved new CAFE fuel economy standards for passenger cars and light trucks, expected to lower the fleetwide MY2031 average target from the Biden-era 50.4 mpg toward roughly 34.5 mpg, with the Transportation Department finalizing the rule September 28, 2026.

What is the 34.5-mpg figure in Trump's fuel economy plan?

The 34.5-mpg figure comes from NHTSA's December 2025 proposed rule for MY2031 fleetwide fuel economy. It has not been independently confirmed as the exact final-rule number, though officials expect the final rule to closely track the proposal.

How does the Trump CAFE plan compare with Biden's 50.4-mpg standard?

Both figures are fleetwide, sales-weighted manufacturer averages, not per-vehicle requirements. The Trump administration's approach represents a significantly lower stringency target than the Biden-era 2024 final rule for the same model year.

Is Trump ending a federal EV mandate?

No federal law requires consumers to buy EVs. Trump used "EV mandate" to describe how Biden-era CAFE and related incentives encouraged automakers to build more EVs; the new rule instead adjusts fuel-economy compliance calculations.

When will the new U.S. fuel economy standards take effect?

The Transportation Department said it would finalize the rule September 28, 2026, with targets phasing in through model year 2031. Legal challenges remain possible once the official text is published.

Author: Rakesh Ray

Rakesh Ray is an automotive researcher, MBA specialist in green mobility strategy, and the founder and editor of BijliWaliGaadi.com. Specializing in deep technical analyses of electric vehicle (EV) ecosystems, powertrain integrations, and battery technologies, he tracks the transition to sustainable transport across global and Indian markets. Connect with him on LinkedIn.

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