The Trump administration also said on Thursday that it will propose to rescind California's unique authority to set its own fuel economy standards and that the EPA and DOT hope to set one national gas mileage and emissions standard for the entire nation.
The Trump administration has moved to weaken USA vehicle emissions standards and has set up a major confrontation with California by scrapping its ability to enact stricter pollution standards and mandate the sale of electric cars.
President Donald Trump said in March previous year that his administration is working on relaxing the Corporate Average Fuel Economy (CAFE) standards set by his predecessor.
The agency suggests keeping the Obama-era standards would add $2,340 to the cost of owning a new auto, "and impose more than $500 billion in societal costs" on the U.S. economy over the next 50 years.
The Environmental Protection Agency said in a statement that relaxing mileage standards in the years ahead would give "the American people greater access to safer, more affordable vehicles that are cleaner for the environment".
California governor Jerry Brown took to Twitter to voice his dissent with the EPA's plan. Meanwhile, California's strict fuel economy and emissions standards have caused financial losses for carmakers, which must raise prices on cars elsewhere to make up for the loss, the proposal states.
The argument remained on the EPA's website Thursday. The preferred option is freezing fuel economy targets at 2020 levels through 2026, rather than maintaining the year-over-year increases that automakers agreed to under President Obama.
Deputy Administrator of the National Highway Transportation Safety Administration Heidi King said the average vehicle on the road in the U.S.is 12 years old and that the proposed rule would mean fewer accidents and injuries.
The Trump administration's proposal would freeze fuel-efficiency standards at 2020 levels - about 37 miles per gallon by 2026, down from the Obama administration's almost 47 mpg - and weaken electric vehicle mandates.More news: Unai Emery to make debut against Lazio, says Unai Emery
But private transportation experts say there are so many factors involved that the 1,000 lives saved figure is questionable.
In Thursday's proposal, the Trump administration argues that its proposed freeze will have a "negligible" impact on air quality, and boost the earth's temperature by 3/1000th of one degree Celsius by 2100.
Trump in March 2017 announced his administration would be reopening a review of the Obama automobile rules that he and some automakers said was unfairly cut short by Obama's EPA.
At a May meeting in the White House, auto firms appealed to Trump to tap the brakes on the administration's aggressive rollback plan.
"Californians have a right to breathe clean air, and we're not giving that up to President Trump without a fight", Feinstein said. Twelve other states have adopted those tougher rules, representing about 40 percent of the country's auto market.
Alson said, according to his own calculations, the savings for someone buying a new vehicle with a loan was $158 a month, but the report acknowledges that consumers would "purchase somewhat more fuel", about five gallons a month during the first year of owning a auto. California and about a dozen states that follow its rules account for about a third of all the passenger vehicles sold in the United States.
Today's cars contain so many computers and must be manufactured to produce so much horsepower out of as little motor as possible that they have become nothing more than rolling computers on the brink of failure.
The rollback would undermine efforts by California and several other states to meet commitments the USA made in the Paris agreement on climate change. "Automakers support continued improvements in fuel economy and flexibilities that incentivize advanced technologies while balancing priorities like affordability, safety, jobs and the environment".