What does China 5 and China 6 mean?
2 Answers
China 5 and China 6 are abbreviations for automobile emission standards. The full name of China 5 is the National Fifth Stage Emission Standard for Motor Vehicle Pollutants; China 6 is the latest pollutant emission standard, officially known as the National Sixth Stage Emission Standard for Motor Vehicle Pollutants, which is implemented in two phases: China 6A and China 6B. Here is more information about emission standards: 1. Introduction: Automobile emission standards regulate the content of harmful gases emitted from vehicle exhaust, including CO (carbon monoxide), HC+NOx (hydrocarbons and nitrogen oxides), and PM (particulate matter, soot). 2. Differences between China 5 and China 6: Under China 5, the carbon monoxide content is 1000mg per kilometer; under China 6, it is 500mg per kilometer. The China 5 standard was issued by the Ministry of Environmental Protection, while the China 6 standard was jointly issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine.
China 5 and China 6 refer to the national vehicle emission standard stages introduced by the government. Simply put, they aim to make vehicle exhaust cleaner. From my actual driving experience, China 5 is the fifth stage with less stringent emission limits, tolerating higher nitrogen oxides for example. China 6, the sixth stage, imposes significantly stricter requirements, with tighter controls on particulate matter and harmful gases. This directly affects your car choice - China 6 compliant vehicles might be more expensive initially but offer better fuel efficiency, saving money long-term. Environmentally, China 6 vehicles significantly improve air quality, especially making urban driving less irritating. I recommend prioritizing China 6 when purchasing, as China 5 vehicles are being phased out nationwide post-2020, with many regions restricting their registration or imposing usage limits - better avoid future regrets.
