What does the China VI emission standard mean?
2 Answers
China VI emission standard means a 50% reduction in carbon monoxide emissions, a 50% decrease in the emission limits for total hydrocarbons and non-methane hydrocarbons, and a 42% stricter limit on nitrogen oxide emissions. Below is a detailed introduction to the China VI emission standard: 1. China VIa: China VIa serves as a transitional phase between "China V" and "China VI." China VIa will be implemented for gas-powered vehicles on July 1, 2019, for urban vehicles (such as city buses, sanitation trucks, postal vehicles, etc.) on July 1, 2020, and for all vehicles on July 1, 2021. 2. China VIb: China VIb is the true "China VI" emission standard. China VIb will be implemented for gas-powered vehicles on January 1, 2021, and fully implemented for all vehicles on July 1, 2023.
China 6 is actually the national sixth-stage vehicle emission standard, which has become particularly stringent in recent years. When I bought my car, I specifically researched it—it reduces the limits for harmful substances like carbon monoxide and nitrogen oxides in exhaust emissions by nearly half compared to China 5, and also introduces new restrictions on particulate matter counts. It is divided into two phases, China 6a and China 6b, and now all new vehicles nationwide must comply with China 6b. The most critical addition is the Real Driving Emissions (RDE) test, which requires vehicles to meet standards even during actual road driving, unlike the previous lab-only testing. This poses significant technical challenges for automakers, requiring new devices like particulate filters, so China 6-compliant cars are more expensive than older models. However, in the long run, the environmental benefits are substantial.
