WASHINGTON ? The National Highway Traffic Safety Administration said in a statement Wednesday that certain GM vehicles from the 2012 through 2018 model years did not comply with federal fuel economy requirements. The fine comes after the Environmental Protection Agency said its testing showed the GM pickup trucks and SUVs emit 10% more carbon dioxide on average than GM's initial compliance testing claimed. The EPA says the vehicles will remain on the road and cannot be repaired.
But David Cooke, senior vehicles analyst for the Union of Concerned Scientists, questioned how GM could not know that pollution exceeded initial test by more than 10% because the problem was so widespread on so many different vehicles. ?You don?t just make a more than 10% rounding error,? he said. He also was surprised that the government is not making GM take action to correct the excess pollution or reduce the gas mileage estimates on the cars? window stickers.
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