https://20somethingfinance.com/obama-new-fuel-economy-standards-for-2025/
U.S. Fuel Economy Standards: 54.5 MPG by 2025
Vehicle Technologies to Improve Fuel Economy and Reduce GHGsNHTSA’s and EPA’s technology assessment indicates there is a wide range of technologies available formanufacturers to consider in improving fuel economy and reducing GHG emissions. The standards allowfor long-term planning by manufacturers and suppliers for the continued development and deploymentacross their fleets of fuel saving and emissions-reducing technologies. The agencies believe thatadvances in gasoline engines and transmissions will continue for the foreseeable future, and that there willbe continual improvement in other technologies, including vehicle weight reduction, lower tire rollingresistance, improvements in vehicle aerodynamics, diesel engines, and more efficient vehicle accessories,and that vehicle air conditioners will continue to improve by becoming more efficient. The agencies alsoexpect to see some increased electrification of the fleet through the expanded production of stop/start,hybrid, plug-in hybrid electric and electric vehicles, as well as other alternative fuel vehicles like naturalgas. Many of these technologies are already available today, and the agency expects manufacturers willbe able to meet the standards through further improvements in these technologies, as well as through asignificant penetration of these and other technologies across the fleet.
Air Conditioning and Off-Cycle-Related Fuel Consumption Improvement Values - For thefirst time for MYs 2017-2025, manufacturers will be able to generate fuel consumption improvementvalues for improvements in air conditioning (A/C) system efficiency to use in complying with the CAFEstandards, and for real-world improvements through the use of “off-cycle” technologies that raise fueleconomy in ways that are not reflected on the current test procedures. Such technologies might includesolar panels, engine start-stop, or active aerodynamics. These flexibilities will be implemented in theCAFE program in the same way that they are implemented in EPA’s GHG program. Manufacturers whoemploy off-cycle technologies may be eligible for pre-defined improvement values from an “off-cyclemenu,” or may petition the agencies to obtain a higher value or for technologies not on the menu.Manufacturers may only raise their CAFE levels up to a certain amount using off-cycle menutechnologies.
https://www.nhtsa.gov/staticfiles/rulemaking/pdf/cafe/CAFE_2017-25_Fact_Sheet.pdf
