What do National V and National VI mean?
1 Answers
National V and National VI refer to China 5 and China 6 emission standards respectively. The China 6 emission standard is 40% to 50% stricter than China 5. The differences between China 5 and China 6 are defined by: 1. The CO emission limit for China 5 is 1000mg per kilometer, while for China 6 it's 700mg per kilometer; 2. Under China 5, diesel and gasoline vehicles had different emission standards, but China 6 adopts a fuel-neutral approach where all vehicles have the same emission limits regardless of fuel type; 3. The sulfur content limit for China 5 is 10ppm with manganese content limited to 2mg per liter, whereas China 6 reduces these to 5ppm sulfur content and 1mg manganese per liter.