Biden administration rolls out new tailpipe rules that will boost EVs and hybrids

The Biden administration on Wednesday finalized one of the most significant pieces of its ambitious climate agenda: the strongest new tailpipe rules for passenger cars and trucks that will decisively push the US auto market toward electric vehicles and hybrids.

But in a concession to automakers and labor unions, the rules will be phased in more slowly than originally proposed and will give automakers more choices for how to comply.

Nearly a year ago, the Environmental Protection Agency proposed a fast ramp-up into EVs — a rule that would have ensured two-thirds of all vehicles sold were electric by the end of this decade. The EPA pumped the brakes on that plan Wednesday.

Instead of pushing automakers to sell more EVs to meet stringent pollution targets, the administration is allowing plug-in hybrids — vehicles that combine gas engines and EV-like batteries — to play a much bigger role in the electric transition.