Where can the difference between National 5 and National 6 standards be identified?
2 Answers
National 5 and National 6 standards differ in the following aspects: 1. Check the vehicle conformity certificate. 2. Review the environmental information accompanying the vehicle list. 3. Examine the vehicle qualification certificate. 4. Different carbon monoxide emission requirements: National 5 allows 1000 mg per kilometer; National 6 allows 500 mg per kilometer. 5. Different particulate matter emission requirements: National 5 allows 5 mg; National 6 allows 3 mg. 6. Different nitrogen oxide emission requirements: National 5 allows 60 mg; National 6 allows 35 mg. 7. Different non-methane hydrocarbon emission requirements: National 5 allows 68 mg; National 6 allows 35 mg.
I often help friends check cars, and the differences between China 5 and China 6 can mainly be identified in a few places. The most direct point is the vehicle nameplate, usually located below the driver's seat door pillar or inside the engine hood, which clearly states the emission standard, such as 'China V' or 'China VI.' Additionally, new cars come with a vehicle conformity certificate that details the emission stage—be sure to check this document when purchasing. Many cities now have traffic restriction policies, such as Beijing, Shanghai, Guangzhou, and Shenzhen limiting older vehicles from entering urban areas. China 5 vehicles may not be allowed in core zones, while China 6 is more environmentally friendly, with lower pollutant limits and much stricter control over PM particulate matter. I recommend prioritizing China 6 when buying a car, as it not only saves fuel and money but also avoids future obsolescence. These indicators are simple to check—don’t slack off; taking a few minutes to glance at them can protect both you and the environment.
