What do China 5 and China 6 mean?
2 Answers
China 5 and China 6 are vehicle emission standards. Here are the specific details about vehicle emission standards: 1. Emission gas regulations: They specify the content of harmful gases such as carbon monoxide, PM, and soot emitted from vehicle exhaust. 2. Meaning of the numbers: The higher the number, the more environmentally friendly the vehicle's exhaust is. Below is extended information on the differences between China 5 and China 6: 1. Standard level: The China 6 standard is an upgrade of the China 5 standard and will become one of the strictest standards globally. 2. Pollutants: Compared to China 5, China 6 strictly controls the emission limits of pollutants. Under the exclusion of operating conditions and test influences, the carbon monoxide emissions of gasoline vehicles are reduced by 50%, the emission limits of total hydrocarbons and non-methane hydrocarbons are decreased by 50%, and the nitrogen oxide emission limits are tightened by 42%.
When I first bought a car, I researched China 5 and China 6 emission standards. They are China's automotive emission standards, with higher numbers indicating stricter requirements. China 5 is the fifth stage, implemented since 2017, with relatively lenient limits. China 6 is the sixth stage, rolled out in two phases (6a and 6b) after 2020, with much tighter limits and stricter controls on pollutants like nitrogen oxides and particulate matter. Choosing a China 6-compliant car has many benefits: for example, driving in big cities, a China 6 car can avoid traffic restrictions, is more environmentally friendly, fuel-efficient, and has higher resale value in the long run. However, be cautious: China 6b is the latest standard, fully implemented from 2023 onwards. When buying a car, check the emission label on the model to confirm compliance, as buying the wrong one could affect registration. Overall, upgrading standards promotes cleaner technology, which is good for air quality, but China 5 used car prices may drop faster, requiring a balance between budget and environmental concerns. I chose China 6 to worry less about the future.
