What is the China 6 standard?
2 Answers
China 6 standard refers to the vehicle emission standards. Compared with the 'China 5' standard, 'China 6' will strictly control the emission limits of pollutants. Under the exclusion of working conditions and test influences, the carbon monoxide emissions of gasoline vehicles will be reduced by 50%, the emission limits of total hydrocarbons and non-methane hydrocarbons will be reduced by 50%, and the nitrogen oxide emission limits will be tightened by 42%. The implementation time of the China 6 emission standard is divided into two phases: 1. The first phase: From July 1, 2020, all sold and registered vehicles must meet the China 6A standard. 2. The second phase: From July 1, 2023, all sold and registered vehicles must meet the China 6B standard; some cities will implement the China 6 light-duty vehicle emission standard in advance.
China's National VI standard is the latest automotive emission regulation, primarily aimed at reducing harmful gases in vehicle exhaust to protect cleaner air. Specifically, it is divided into two phases: National VIa and National VIb. National VIa was implemented starting in 2019, requiring significant reductions in carbon monoxide, hydrocarbons, nitrogen oxides, and particulate matter emissions. National VIb is even stricter, enforced from 2020, with further tightened standards—for example, nitrogen oxide limits are nearly halved compared to the National V standard. It also introduced real-driving emissions (RDE) testing to ensure vehicles comply with standards even in urban driving conditions. If you're buying a car, checking whether it meets National VIb certification is crucial, as it affects environmental labeling and registration. Overall, this standard has pushed automakers to upgrade technologies, adopting more three-way catalytic converters and particulate filters, while also accelerating the adoption of new energy vehicles, making blue skies more common.
