What is the equivalent of Euro 5 in China's emission standards?

[Matteo]

Euro 5 is equivalent to China's National 5 standard. China's automotive environmental protection standards are similar to European standards, with National 5 emission standards being equal to Euro 5 emission standards. The National 6 emission standard is slightly stricter than the Euro 6 standard. Compared to the National 4 standard, the National 5 standard reduces nitrogen oxide (NOx) emissions by 25% for light-duty vehicles and 43% for heavy-duty vehicles. Vehicle emission standards regulate the levels of harmful gases emitted from vehicle exhaust, including CO (carbon monoxide), HC plus NOx (hydrocarbons and nitrogen oxides), and PM (particulate matter, soot). To curb the generation of these harmful gases and encourage automakers to improve their products to reduce emissions at the source, both Europe and the United States have established relevant automotive emission standards.