In which year did China National V emission standards come into effect?

[CoreyLee]

China National V, the fifth stage of the national motor vehicle emission standards, was implemented nationwide starting from January 1, 2017. The emission control level of the National V standard is equivalent to the fifth stage emission standard implemented in Europe. The European Union has been enforcing it since 2009, with stricter limits on motor vehicle emissions such as nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles compared to the National IV standard. Relevant information is as follows: 1. Motor vehicle pollutant emission standards are established to implement environmental protection laws, reduce and prevent pollution from vehicle exhaust, protect the ecological environment, and ensure human health. 2. Compared to the National IV standard, the National V standard reduces harmful gas emissions such as nitrogen oxides from heavy-duty vehicles by 43%, and reduces harmful gas emissions such as nitrogen oxides from new standard light-duty vehicles by 25%. Therefore, it not only significantly improves the environment but also benefits everyone's health.