The Truck & Engine Manufacturers Association, which represents companies like Daimler Trucks DTGGe.DE, Caterpillar CAT.N and Cummins CMI.N, previously raised concerns the EPA proposal could boost costs and result in customers keeping "their higher-emitting trucks longer." Nonprofit RMI said the inflation reduction law's up to $40,000 Qualified Commercial Clean Vehicle tax credit "will turbocharge adoption of electric medium-duty and heavy-duty trucks." In March, the EPA said the new heavy truck GHG standards when fully phased in would result in up to 24% to 25% lower carbon dioxide emissions, but environmentalists have pressed the agency to do more.