What are China 5 and China 6?

[OEden]

China 5 and China 6 emission standards are the abbreviations for the fifth and sixth stages of national motor vehicle pollutant emission standards, which require vehicle exhaust emissions to meet certain pollutant content limits. Introduction to China 6 Emission Standard: The China 6 emission standard is an upgraded version of the current China 5 standard, divided into two phases: China 6a and China 6b, to be implemented gradually. It imposes stricter requirements on vehicle exhaust emissions such as carbon monoxide and hydrocarbons compared to China 5, aiming to achieve environmental protection goals. Introduction to the Two Phases: The China 6 emission standard consists of two parts: 'Limits and Measurement Methods for Emissions from Light-duty Vehicles (China 6)' and 'Limits and Measurement Methods for Emissions from Heavy-duty Diesel Vehicles (China 6)'. The former has been implemented since July 1, 2020, and the latter since July 1, 2019. In short, China 6 imposes more stringent requirements on various vehicle emissions.