What are the differences between National IV and National V standards?
2 Answers
The differences between National IV and National V standards include: 1. Different vehicle environmental labels: National IV has environmental labels while National V canceled them. 2. Different emission standards: The nitrogen oxide emission limit for National IV is 0.8 grams per kilometer, while for National V it's 0.06 grams per kilometer, with added restrictions on particulate matter concentration. 3. Different pollution levels: The olefin content standard for National IV is 28%, while for National V it's 24%. The main emission pollutants for both standards are: 1. Hydrocarbons; 2. Nitrogen oxides; 3. Carbon monoxide; 4. Particulates.
I usually pay attention to automotive emission standards, and the difference between China IV and China V is quite noticeable. China V is much stricter than China IV, significantly lowering the limits for carbon monoxide, hydrocarbons, and nitrogen oxides, with particularly stringent requirements for particulate matter in diesel vehicles. To meet China V standards, vehicles are equipped with catalytic systems like SCR to reduce harmful gas emissions. In daily driving, China V vehicles are more fuel-efficient and offer more stable performance, though they might cost a few thousand yuan more initially. Maintenance-wise, China V vehicles have more complex technology and higher-priced parts, while China IV vehicles are simpler but may consume more fuel. Environmentally, China V vehicles fare better in cities with driving restrictions, so I recommend choosing China V to support the environment. In the long run, they are more reliable, reduce pollution issues, and significantly enhance the overall driving experience.
