What are the differences between China 5 and China 6?
2 Answers
The differences between China 5 and China 6 are as follows: 1. Different requirements for carbon monoxide emissions: (1) China 5 vehicles have a carbon monoxide content of 1000mg per kilometer. (2) China 6 vehicles have a carbon monoxide content of 500mg per kilometer. 2. Different issuing departments: (1) The China 5 standard was issued by the Ministry of Environmental Protection. (2) The China 6 standard was issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine. 3. Different control levels: (1) The emission control level of the China 5 standard is equivalent to the European Stage 5 emission standard currently in effect. (2) The emission control level of the China 6 standard is designed to prevent environmental pollution caused by exhaust emissions from compression-ignition and gas-fueled spark-ignition engine vehicles and to protect human health. 4. China 6 introduces stricter compliance and regulatory requirements, including type testing and information disclosure, production conformity checks, new vehicle inspections, and in-use vehicle compliance checks, while simplifying the methods for determining compliance.
I recently compared the differences between China 5 and China 6 standards when buying a car, and it was quite an eye-opener. China 5 is the older standard with less stringent emission limits, allowing higher levels of carbon monoxide and nitrogen oxides. China 6 is the newer version with significantly stricter limits, resulting in much lower pollutant emissions and cleaner air. The testing methods also differ—China 5 uses the NEDC cycle, which is more like a fixed lab scenario, while China 6 adopts the WLTC cycle, better reflecting real-world driving conditions and providing more accurate fuel consumption data. Price-wise, China 5 cars are cheaper, but in major cities like Shanghai, new China 5 cars can no longer be registered, and their resale value drops faster. Maintenance-wise, China 6 cars come with upgraded OBD systems, making it easier to detect issues. When choosing a car, it’s important to think long-term—China 6 cars are more eco-friendly and hold their value better.
