The finalized rule, prepared by the Environmental Protection Agency and the Department of Transportation, is expected to be unveiled Tuesday.
According to the Times, the new rule does away with the Obama-era standards from 2012 for automakers to produce vehicles with an average fuel economy to 54.5 miles per gallon by 2025 model year vehicles, lowering it down to 40 miles per gallon, according to the Times.
The Trump administration would mandate a 1.5% annual increase in fuel efficiency, compared to the 5% annual increase under Obama, the Times reported.
According to the Times, a recent draft plan showed that the new rule would allow for nearly a billion more tons of carbon dioxide released, as well as 80 billion more gallons of gasoline consumed.
An internal economic analysis found that while the new fuel economy standard would lower new car and truck prices, it would increase the amount consumers pay for gasoline and ultimately cost the US economy between $13 billion and $22 billion, the Times noted.
Citing two people briefed on the rule, the Post reported that the government’s estimates found that more Americans will die as a result of the increased air pollution from the new standards compared to if the current standards were kept within a similar period.
The rule, expected to be implemented in late spring, is likely to draw legal challenges from several states, according to the Times.
Shortly after taking office, the Trump administration had moved to reexamine those tougher Obama-era standards and end California’s authority to set tougher emissions standards than the federal standards for itself and 12 other states.
CNN’s Gregory Wallace, Kevin Liptak and CNN Business’ Chris Isidore contributed to this report.