Trump Administration to Temporarily Lift Summer Gasoline Smog Rules

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The Trump administration is expected to announce as soon as Wednesday that it will temporarily lift federal smog-cutting restrictions on summer-blend gasoline to curb rising energy prices stemming from the war on Iran, according to two sources familiar with the matter. The change could shave several cents per gallon off retail prices and provide relief to both consumers and refiners struggling with tight fuel supplies.

Why it matters

This decision is part of a broader effort by the White House to contain the economic and political fallout from rising energy costs as peak summer driving season approaches. Lifting the summer gasoline restrictions could help lower prices at the pump, but it may also lead to increased air pollution in some areas.

The details

The move would make gasoline cheaper by not forcing refiners and retailers to switch to more costly summer blends. Fuel retailers would also be allowed to continue selling gasoline blended with 15% ethanol, known as E15, throughout the summer driving season when stricter rules normally limit its use in much of the country.

• The Trump administration is expected to announce the change as soon as Wednesday, March 25, 2026.

What’s next

The EPA is expected to formally announce the temporary lifting of the summer gasoline smog rules in the coming days.