Abstract:

The factsheet summarizes the cumulative emission benefits of adopting ACC II starting in model year 2026 or 2027 compared to a business-as-usual scenario based on U.S. Environmental Protection Agency projections of the Revised 2023 and Later Model Year Light-Duty Vehicle Greenhouse Gas Emissions Standards. It shows expected cumulative reductions from 2026 to 2030 and 2026 to 2040 of key air pollutants—nitrous oxides (NOx) and fine particulate matter (PM2.5), measured as reductions in tailpipe emissions—as well as carbon dioxide equivalent, measured along the whole well-to-wheel lifecycle (WTW CO2e).