Under the Energy Policy Act of 1992 (EPAct) and subsequent regulations, certain vehicle fleets operated by state agencies or alternative fuel providers are required to acquire alternative fuel vehicles (AFVs) as a fraction of their light-duty vehicle acquisitions. This chart shows the number of AFV acquisitions and other creditable vehicle acquisitions, as defined by the program (e.g., hybrid electric vehicles or HEVs), made by these fleets from 1992 through 2023. Flexible fuel vehicles (FFVs) that operate on high-level blends of ethanol continue to be the most frequently acquired vehicle. This is likely because they can conveniently be fueled with gasoline when ethanol is not available and because vehicle manufacturers offer the FFV option on the models most frequently acquired by fleets. Furthermore, the marginal cost increase of acquiring an FFV over a conventional gasoline vehicle is minimal or nonexistent. Continuing the trend from recent years, fleets are also acquiring more electric vehicles, which now make up the second most acquired AFV type.

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