Is China IV actually China V?

[DelNoah]

China IV (China V) has actually met the China V emission standards, but due to the absence of China V standards at the time, it could only be labeled as China IV. Below is some information about China IV and China V: 1. Differences: The main difference between China IV and China V standards lies in the stricter nitrogen oxide (NOX) emission limits for gasoline vehicles under China V, which are 25% tighter (reduced from 0.08g/km to 0.06g/km). Additionally, China V introduces a new testing standard for non-methane hydrocarbons (NMHC). 2. China IV: The China IV standard represents the fourth phase of national motor vehicle pollutant emission standards in China. Major automotive pollutants include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), and PM (particulate matter). Through technologies such as improved secondary air injection and exhaust gas recirculation systems with cooling devices, it achieves emission levels equivalent to the Euro IV standard. 3. China V: The China V emission control level is equivalent to the Euro 5 emission standards currently implemented in Europe. The European Union has been enforcing these standards since 2009, which impose more stringent limits on vehicle emissions such as nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles.