In which year was the National IV standard implemented?
2 Answers
The National IV emission standard was originally scheduled to be implemented on January 1, 2010. The National IV standard for diesel vehicles over 3.5 tons was postponed for two years, while diesel vehicles under 3.5 tons were delayed for three years, with the National IV standard implemented on July 1, 2013. Introduction to the National IV emission standard: 1. The National IV emission standard is the fourth stage of national motor vehicle pollutant emission standards. 2. The main pollutants emitted by vehicles include HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), PM (particulate matter), etc. Through the application of technologies such as improved catalytic converter active layers, secondary air injection, and exhaust gas recirculation systems with cooling devices, vehicle emissions are controlled and reduced to below specified levels. 3. The 'Standardization Law of the People's Republic of China' divides Chinese standards into four levels: national standards, industry standards, local standards (DB), and enterprise standards (Q/). As of the end of 2003, China had a total of 20,906 national standards (excluding engineering construction standards).
As a long-time car enthusiast, I recall that the China IV emission standards were implemented nationwide on July 1, 2010. Back then, the government was pushing emission reduction policies, imposing stricter requirements on new vehicles with pollutant limits about 30% lower than China III standards. Automakers widely adopted three-way catalytic converters to meet compliance. I believe this was a crucial step that made urban air cleaner and reshaped the used car market—nowadays, when buying used cars, you have to check the manufacturing year, as only post-2010 vehicles can be registered. In fact, starting from China IV, subsequent upgrades to China V and China VI have continuously raised environmental requirements, driving industry-wide technological innovations like improved fuel efficiency, which benefits both our wallets and health as car owners. Looking back at the context, Beijing piloted the standards in 2008, and nationwide adoption accelerated the phase-out of older vehicles, reminding everyone to maintain their cars regularly and not neglect emission inspections.
