The CAFE requirement includes a flexibility mechanism that provides credits allowing automakers to reduce their fleet-wide efficiency performance by designing a variety of systems including efficient air conditioning, flex fuel engines, and compressed natural gas treatment.
Ang kinakailangan Cafe kasama ang isang flexibility mekanismo na nagbibigay ng credits na nagpapahintulot automakers upang mabawasan ang kanilang fleet-wide pagganap kahusayan sa pamamagitan ng pagdisenyo ng iba't-ibang mga sistema kabilang ang mahusay na air conditioning, ibaluktot gasolina engine, at naka-compress natural gas paggamot.