What National Emission Standard Does IV Correspond To?
2 Answers
IV refers to the China IV emission standard, which was implemented in 2010. Almost all vehicles produced after 2010 comply with the China IV standard. The latest emission standard has now reached China VI, which was implemented in 2019. The vehicle environmental protection label is a graded emission standard certification issued by the government, categorized into yellow and green labels based on vehicle type and emission standards. Its purpose is to facilitate energy-saving and emission-reduction inspections as well as regular environmental checks for vehicles. By introducing stricter emission standards, the government can regulate automakers, encouraging them to produce more environmentally friendly vehicles. With global environmental pollution becoming increasingly severe, countries worldwide are implementing stricter emission standards to hold automakers accountable. Stricter emission standards help reduce vehicle exhaust emissions and protect the environment. The China VI standard implemented in 2019 is the China VIa standard, which serves as a transitional phase between China V and China VI, making it relatively lenient. The true China VI standard is the China VIb standard implemented in 2021, which is exceptionally stringent.
I've been repairing cars for over a decade and often get asked which country's emission standard 'IV' refers to. Simply put, IV stands for the European emission standard Euro IV, which we call National Standard IV (Guo IV) in China. It indicates the limit levels for vehicle pollutant emissions. Taking Guo IV as an example, it was implemented around 2010 with much stricter requirements than Guo III, such as reduced CO and NOx emissions. To check your vehicle's emission level, you can look for the environmental label on the upper right corner of the windshield or check the information on the vehicle registration certificate. Emission upgrades are truly beneficial as they reduce air pollution and make cities cleaner. When driving, if you encounter high-emission zone restrictions, a Guo IV vehicle might need to detour, so regular maintenance should include checking the catalytic converter's condition.
