What is the Chinese equivalent of Euro IV with OBD?
2 Answers
Environmental standard Euro IV OBD means that the vehicle is equipped with an OBD engine fault self-diagnosis system to meet the Euro IV standard, which is equivalent to the current China IV emission standard. Below are relevant details: 1. The China IV emission standard is the fourth stage of national motor vehicle pollutant emission standards. The main pollutants from vehicle emissions include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), and PM (particulate matter). Through the application of technologies such as improved catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices, these standards control and reduce vehicle emissions to below specified levels. 2. The China 3 and China 4 standards are based on the Euro 3 and Euro 4 vehicle emission standards. Compared to China 2, China 3 significantly reduces pollutant emission limits—China 3's tailpipe pollutant emission limits are 30% lower than those of China 2, while China 4 further reduces them by 60%. To ensure vehicles consistently meet emission limits during use and maintain the durability of emission control performance, requirements for On-Board Diagnostics (OBD) and in-use compliance have been added.
I've been in the auto repair industry for many years and frequently deal with emission standards. Euro IV with OBD is equivalent to China's National IV standard, because when China implemented National IV around 2010, it fully introduced the On-Board Diagnostics (OBD) system to monitor emission faults, just like the Euro IV requirements in Europe. In practice, OBD can detect engine conditions in real-time, triggering warning lights for issues like excessive exhaust emissions or catalytic converter problems, helping to reduce pollution and maintenance costs. When repairing cars, I remind owners that Euro IV imported vehicles are treated as National IV level in China, and they generally pass annual inspections. However, don’t neglect OBD maintenance for older cars, or you might face registration issues. Now, the new National VI standard is stricter, but National IV vehicles can still be used for a few more years. Keeping an eye on these details can save you both hassle and money.
