What are the differences between National 5 and National 6?

1 Answers
LeilaniMarie
07/29/25 3:54pm
The differences between National 5 and National 6 are: 1. Different control levels: National 6 places more emphasis on the environmental pollution caused by vehicle exhaust compared to National 5. 2. Different release dates: National 5 was released on September 17, 2013; National 6 was released on June 22, 2018. 3. Different issuing departments: National 5 was issued by the environmental protection department; National 6 was issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine. 4. Different requirements: National 6 has the same emission standards; National 5 has different standards. 5. Different strictness: National 6 adopts the strictest values from National 5 emission requirements. National 6 improves gasoline quality, reduces pollutants and exhaust emissions, and is more environmentally friendly.
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