New light-duty vehicles sold in the United States account for a modest and declining share of global CO2 emissions, indicating that further tightening of U.S. vehicle emissions standards would have a limited effect on total worldwide emissions.
From the EPRINC Chart of the Week archive.
Cite: EPRINC, “Global Impact of CO2 Emissions from New U.S. Light-Duty Vehicles September 3, 2025,” Chart of the Week 2025-32, August 4, 2025.