What are the emission standards for China VI vehicles?
2 Answers
The transition period for the particulate number (PN limit) of China VI emission standards for light-duty vehicles, which is 6.0×10^12 particles per kilometer, has been adjusted from before July 1, 2020, to before January 1, 2021. Starting from January 1, 2021, all domestically produced and imported light-duty vehicles meeting China VI emission standards must comply with the PN limit of 6.0×10^11 particles per kilometer. Below are the key announcements regarding the implementation of China VI emission standards for light-duty vehicles: 1. Starting from July 1, 2020, the China VI emission standards for light-duty vehicles will be implemented nationwide, prohibiting the production of light-duty vehicles meeting China V emission standards. Imported light-duty vehicles must comply with China VI emission standards. 2. Automobile manufacturers and importers, as the responsible entities for environmental production consistency management, must disclose vehicle emission test information and pollution control technology information before the products leave the factory or the goods enter the country, in accordance with the 'Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution' and relevant regulations, to ensure that the actual production and imported vehicles meet the emission standard requirements.
After driving for so many years, I can say the China 6 emission standard is no small change. Simply put, it's China's latest control requirements for vehicle exhaust pollutants, stricter than China 5. Specifically, China 6 is divided into two phases: China 6a was introduced in 2019, and China 6b has been implemented since 2020. The pollutant limits have been significantly reduced. For example, the carbon monoxide (CO) emission limit for gasoline vehicles dropped from 1000 mg/km under China 5 to 500 mg/km, and nitrogen oxides (NOx) were reduced by about 40%. Diesel vehicles also face stricter limits, especially for particulate matter (PM). After implementation, new vehicles must be equipped with technologies like gasoline particulate filters (GPF) to control pollution. This directly impacts air quality management, reducing urban smog and health issues, but automakers and repair shops need to upgrade their equipment. When buying a car, I can check the environmental label to confirm if the model meets China 6b standards. Older vehicles may require expensive modifications to comply, but overall, it benefits green transportation.
