What is the difference between China IV and China V?
2 Answers
The difference between China IV and China V lies in the different upper limits of sulfur content: 1. The upper limit of sulfur content in China IV standard gasoline is 10mg. 2. The upper limit of sulfur content in China V standard gasoline is 50mg. Additional information: 1. China V has stricter control over nitrogen oxides compared to China IV, with China V stipulating an emission limit of 25%. 2. The China IV emission standard is the national fourth-stage motor vehicle pollutant emission standard. The main pollutants emitted by automobiles include HC, NOx, CO, PM, etc. The application of technologies such as better catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices helps in reducing these emissions.
The main difference between China's National IV and National V standards lies in the strictness of emission controls. Simply put, National V is more stringent than National IV, requiring lower limits for pollutant emissions, especially for harmful gases like nitrogen oxides and particulate matter. I recall that National IV was implemented around 2013, imposing certain restrictions only on new vehicles, while National V was introduced after 2017 with more scientific testing methods, such as real driving emissions tests, making the data more realistic. This means automakers had to upgrade their technologies, such as using better catalytic converters or more efficient engines, to meet the standards. As an enthusiast, I’ve noticed that National V cars don’t feel much different in daily driving, but they are more environmentally friendly in the long run and help reduce smog. If you’re planning to buy a car, I’d recommend prioritizing National V models—they have better resale value and are safer in cities with traffic restrictions, especially in major urban areas.
