In which year did China IV emission standards begin?
4 Answers
China IV emission standards began in 2011 and were in effect until the implementation of China V standards in 2018. Therefore, vehicles produced between 2011 and 2017 comply with China IV standards. The China IV standards require approximately a 50% reduction in emissions of various pollutants compared to China III standards. Below is more information about the China IV emission standards: 1. The China IV emission standard is the fourth phase of national motor vehicle pollutant emission standards. The main pollutants emitted by vehicles 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 aim to control and reduce vehicle emissions to below specified levels. 2. Compared to China III, the China IV standards require a reduction of approximately 50% in single-vehicle pollutant emissions for light-duty vehicles, about 30% for heavy-duty vehicles, and more than 80% in particulate matter emissions.
I remember very clearly that the China IV emission standards were mandatorily implemented nationwide starting in 2010. That year, I happened to be considering buying a new car, so I paid special attention to policy changes. To be honest, during the China III era, vehicle exhaust pollution was quite severe, and urban smog was very noticeable. But after the implementation of China IV, new cars were equipped with exhaust purification devices, such as OBD systems, to monitor emissions in real-time. As a car owner, I felt the air quality gradually improved, and I also had to pay more attention to checking filters during maintenance. Moreover, some regions like Beijing piloted China IV as early as 2008, demonstrating a commitment to accelerating environmental protection. Overall, that adjustment raised environmental awareness across the entire automotive industry and prompted more people to pay attention to whether used cars met emission standards.
From an environmental enthusiast's perspective, the implementation of China's National IV emission standards in 2010 marked significant progress. I believe it not only regulated production standards for new vehicles but also notably reduced harmful gas emissions. During those years, I personally noticed much fresher urban air while driving, especially during rush hours. After the adoption of National IV standards, automakers were compelled to optimize engines and exhaust treatment systems, leading to a substantial decrease in particulate emissions per vehicle on the road. I recall this policy also accelerated the promotion of new energy vehicles, as stricter standards gradually phased out high-emission older cars. On a personal level, it heightened my sense of responsibility for vehicle maintenance, such as regularly inspecting catalytic converters.
The China IV emission standards were implemented starting in 2010. I know this because when purchasing a car, I had to confirm whether the manufacturing date complied with the new regulations. After implementation, all vehicles leaving the factory were required to meet higher emission levels, such as monitoring nitrogen oxides. I researched this at the time and learned that installing OBD devices could record data in real-time, making annual inspections more stringent. Overall, these standards helped control pollution sources.
