What Does Emission Standard China I to China VI Mean?
2 Answers
Automobile emission standards from China I to China VI are designed to differentiate harmful gases such as carbon monoxide, hydrocarbons, nitrogen oxides, and PM (particulate matter, soot) emitted from exhaust. The implementation of automobile pollutant emission standards aims to reduce vehicle exhaust emissions and mitigate environmental pollution. Vehicle exhaust refers to harmful gases discharged from waste gases, including CO (carbon monoxide), HC+NOx (hydrocarbons and nitrogen oxides), PM (particulate matter, soot), etc. Below is relevant content introduction: 1. For vehicles registered in 2007, some comply with China III, while others with China IV; 2. Vehicles registered before 2007 are mostly below China IV, meaning China III or China II; 3. Before 2005, most vehicles were China II. After 2008, most vehicles were China IV. In 2014, part of the automobile market was China V, and another part was China IV. After 2015, most vehicles were China V.
I noticed that China's vehicle emission standards have evolved from National I to National VI, primarily as the government's phased regulations to reduce pollution. As a daily driver, I've personally witnessed the improvements in air quality brought by these changes. National I was first implemented around 2000, targeting basic pollutants like carbon monoxide—back then, black smoke from vehicles was common. Fast forward to National VI, fully rolled out in 2019, which imposes much stricter limits on particulate matter and nitrogen oxide emissions, making urban skies clearer. The benefits include healthier breathing and cleaner vehicles, though older cars may need replacement to comply. Overall, these escalating standards reflect growing environmental awareness, encouraging people to choose low-emission models, making cycling and walking in cities far more pleasant. I think the government's step-by-step approach is wise—gradual but effective progress from weak to strong standards.
