What are the differences between China National V and China National VI vehicle emission standards?
2 Answers
Adopting the principle of fuel neutrality, meaning the emission limits remain the same regardless of the fuel type used. Below is more information about the emission standards: 1. Brief description: China National V and National VI emission standards are the abbreviations for the fifth and sixth stages of national vehicle pollutant emission standards respectively. These standards require vehicle emissions to meet specified limits for gaseous pollutants. The China National VI standard is an upgraded version of the current National V standard, divided into two phases: National VI a and National VI b, implemented progressively. Compared to National V, National VI imposes stricter requirements on vehicle tailpipe emissions of pollutants such as carbon monoxide and hydrocarbons, resulting in more environmentally friendly emissions. 2. Advantages of National VI: Causes less environmental pollution, produces more eco-friendly emissions, protects the ecological environment, and safeguards human health.
The main difference between China V and China VI lies in the stricter emission standards. China VI imposes much higher restrictions on pollutants. For example, its limits for PM (particulate matter) and NOx (nitrogen oxides) are about half those of China V. The testing method has also been upgraded from purely laboratory-based to include real driving emission tests, which more accurately reflect road conditions. This requires vehicles to be equipped with devices like GPF (gasoline particulate filters). Personally, when I bought a car, I found that China VI-compliant vehicles cost a bit more and involve more complex technology, but they emit less exhaust, significantly improving urban air quality. During the transition period, many regions have already required new car sales to meet China VI standards. If buying a used China V car, it's important to check local policies to avoid migration restrictions. In the long run, these evolving standards push automakers to innovate, promoting the development of electric vehicles and contributing to cleaner air.
