Until EPA announces otherwise, EPA27 is the lawTruck OEMs are currently bound to the regulations that are in front of them, and because EPA27 is still law, truck makers must be ready to provide model year 2027 vehicles that meet EPA27 standards. Unfortunately for truck buyers, it might be a bit too late for the EPA to throw out EPA27 altogether. He believes the change most likely to occur with EPA27 would be with the warranty requirements, which increase from 435,000 miles to 650,000 miles with the current EPA27 rule. Until the EPA announces concrete changes or a pause to EPA27, the time to prepare for the future is now. “Fleets have to be prepared; you could be left behind,” Rosa said.