By David Shepardson

WASHINGTON (Reuters] – New vehicle emission standards for the United States are being finalized by Environmental Protection Agency (EPA). These new requirements will be in place through 2026 and reverse President Donald Trump’s decision to roll back car pollution reductions. They also accelerate a shift from fossil fuel vehicles within the U.S.

“We are setting robust and rigorous standards that will aggressively reduce the pollution that is harming people and our planet – and save families money at the same time,” EPA Administrator Michael Regan said in a statement.

In August, President Joe Biden announced that he would reverse the Trump-era measures to ease restrictions on the president Barack Obama. The Monday final rule is more stringent than the August proposal by EPA or Obama’s requirements.

The EPA regulations would produce a fleetwide average fuel consumption of 40 mpg by 2026 if expressed as miles per gallon requirements (mpg). This compares to 38 mpg for the August proposal, and 32 mpg for the Trump rules.

Obama and Biden have both pressed for tougher fuel efficiency standards to cut greenhouse gas emissions. Many states and environmental organizations urged Obama to adopt stricter regulations. The result will be a reduction of CO2 emissions from 3.1 million tons by 2050.

Biden calls for 50% of new cars sold by 2030 to be electric or plug-in hybrid.

Trump’s Republican government rescinded Obama’s requirements in March 2020 to only require 1.5% increases in efficiency annually through 2026. Obama wanted 5% increases annually.

These new regulations will take effect with the 2023 model-year and mandate a 28.3% decrease in vehicle emissions by 2026.

It will prove difficult for automakers, particularly for Detroit’s Big Three automobile manufacturers to comply with the rules. General Motors (NYSE :), Ford Motors (NYSE 🙂 Co, and Chrysler-parent Stellantis NV will be at an event on Monday to announce the new rules.

Biden’s EV plan suffered a blow Sunday after Joe Manchin (deputy senator from Democratic) said he won’t vote for a $1.75 billion domestic investment bill. It would include new EV credit tax credits, which would be favorable to Detroit’s Big Three carmakers.

The EPA projects that vehicle emission reductions will outweigh costs by as much as $190 billion, and drivers will see savings of between $210 billion to $420 billion over 2050.

According to the EPA, 17% of all new U.S. automobiles will be EVs by 2026.

Transportation is America’s largest source of greenhouse gas emissions.