a faded uaw local 22 logo is seen outside the united auto workers union hall that services the general motors detroithamtramck assembly plant in detroit michigan us november 26 2018 reutersrebecca cook washington oct 27 reuters  the united auto workers union backs us president joe bidens administrations proposed tougher vehicle fuel economy requirements but does not support even more stringent requirements that some environmental groups have sought the union outlined its position in written comments to the national highway traffic safety administration nhtsa which set a deadline of oct 26 for comments which were still being posted on wednesday in august the nhtsa and the environmental protection agency epaproposed new tougher vehicle efficiency and emissions rules after the trump administration rolled back obamaera requirements nhtsas proposed rule strikes the right balance of continuing to improve fleet fuel economy sets targets that are achievable and encourages automakers to invest in new technologies the uaw said warning tougher requirements could undermine the overall achievability of regulations  and fail to acknowledge the industry disruptions of recent years nhtsa has proposed increasing fuel efficiency 8 annually for model years 20242026 the epa plan proposes a 10 increase in 2023 emissions reductions followed by 5 annual improvements in the next three model years the consumer federation of america urged nhtsa to adopt a more stringent alternative  10 increases annually  saying it would save consumers at least 28 billion general motors gmn said on wednesday that differences between the epa and nhtsa proposals could make vehicles with tailpipes the mainstream compliance solution  every dollar spent propping up legacy engines is a dollar not spent on the investments necessary for future battery electric vehicles the sierra club environmental group criticized the nhtsa for offering loopholes that would allow automakers to double down on gasguzzlers and award credits for technology that doesn’t actually slash emissions the uaw supports nhtsas proposed restoration of incentives for hybrid or overperforming pickups a group of 22 state attorneys general and several major us cities urged the nhtsa to consider even more stringent standards in september they urged epa to finalize more stringent requirements epa spokesman nick conger said the agency intends to finalize the rule by dec 31