Find and compare alternative fuel vehicles (AFVs), engines, and hybrid/conversion systems. Some of the light-duty AFVs may count toward vehicle-acquisition requirements for federal fleets and state and alternative fuel provider fleets regulated by the Energy Policy Act (EPAct). To download lists of light-duty vehicles for past model years, see the publications search.
For medium- and heavy-duty vehicles:
For emissions certification requirements, refer to the EPA Green Vehicle Guide.