Are China VI vehicles classified into a and b?
2 Answers
China VI vehicles are indeed classified into China VI a and China VI b. Currently, the national China VI standard is divided into two phases: China VI a and China VI b. Compared to China VI a, China VI b imposes stricter emission requirements on carbon monoxide, non-methane hydrocarbons, nitrogen oxides, and PM fine particulate matter. China VI a can be considered a transitional phase to China VI b. The China VI standard, officially known as the National Sixth Stage Emission Standard for Motor Vehicle Pollutants, was established to implement environmental protection laws, reduce and prevent pollution from vehicle exhaust, protect the ecological environment, and ensure human health. The implementation of the China VI standard signifies a further step in the national management of vehicle emissions.
As an automotive enthusiast, I have been closely following the progress of the China VI emission standards. Yes, China VI is indeed divided into two phases, A and B, primarily driven by policy considerations. China VI A was implemented in 2020 as an interim standard with relatively lenient emission limits, such as allowing higher nitrogen oxide emissions, giving automakers time to adjust production. On the other hand, China VI B fully came into effect in 2023 with stricter requirements, significantly reducing particulate matter and harmful gases in exhaust emissions, which involves more efficient catalytic converters and engine tuning technologies. When purchasing a car, I prioritize models compliant with China VI B because they are not only more environmentally friendly but also tend to have higher resale value in the long run. When buying a used car, be cautious—check the production date and certification label, as vehicles manufactured before 2022 might only meet China VI A standards. This information is readily available online, helping everyone avoid purchasing cars with outdated emission standards.
