The China VI standard is among the world’s most stringent HDV emission standards and combines best practices from both European and U.S. regulations. It will be a key pathway to clean up diesel emissions and is therefore a critical step toward winning the war against air pollution in China. According to the analysis, the China VI standard will reduce emissions of four major ambient air pollutants—including CO, HC, NOX, and PM—by approximately 1,327 thousand metric tons, 86 thousand metric tons, 4,512 thousand metric tons, and 159 thousand metric tons, respectively, in 2030. These emission reductions would help decrease the national annual average PM2.5 and ground-level ozone pollution concentrations by 1.04 μg/m3 and 0.93 ppb, respectively, in 2030.