
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 should include checking the catalytic converter's condition.

As a car owner, I researched this when my second car. IV stands for Euro IV, the European standard, which corresponds to China's National IV emission standard. This means the vehicle's exhaust control system is more advanced. For example, National IV vehicles pass annual inspections more easily because they meet the environmental requirements at the time. I remember when I bought the car, the salesperson pointed out the National IV mark on the environmental label. Higher emission standards improve the air we breathe, and National IV reduces many more harmful substances than older standards. However, it's important to note that some major cities are now implementing National VI, so National IV vehicles may face driving restrictions. Knowing your car's emission level helps avoid fines on the road.

As an environmentally conscious individual, I believe Emission Standard IV is equivalent to China's National IV, representing the mid-term stage of automobile pollution control. In Europe, it's known as Euro IV, focusing on limiting CO and HC emissions. Its implementation did alleviate smog issues. Although National VI is stricter now, National IV vehicles remain common in remote areas. When purchasing a vehicle, prioritize emission levels to protect the environment.

When helping friends pick a , I always emphasize the importance of emission standards. Euro IV in Europe is equivalent to China's National IV standard. Always verify this before purchasing, as it directly impacts insurance costs and transfer procedures. National IV vehicles are usually more affordable, but may not comply with new urban environmental regulations, so weigh the pros and cons. Remember to check the vehicle registration certificate or environmental compliance notice to confirm the standard.

As someone who studies automotive history, I know that IV stands for Euro IV emissions, and the Chinese version is called China IV. This standard has been implemented since 2010, driving advancements in catalytic converter technology. Emission upgrades can protect health, such as reducing the risk of respiratory diseases. When choosing or replacing a car, consider the China IV background to ensure compliance with local regulations.


