What symbols represent China IV and China V?
3 Answers
China IV and China V are represented by Roman numeral symbols: IV-4, V-5. Here is some information about China IV and China V: 1. China IV and China V refer to the national vehicle emission standards in China. There are three major vehicle emission regulations worldwide: the United States, Europe, and Japan. Although the Chinese automotive market has developed rapidly, its emission regulations are relatively behind and started later. 2. Compared to the China IV standard, the China V standard reduces nitrogen oxide emissions by 25% for light-duty vehicles and 43% for heavy-duty vehicles. The main difference between China V and China IV is the stricter emission requirements for heavy-duty vehicles.
During my years of car ownership, China IV and China V refer to the fourth and fifth stages of China's vehicle emission standards. To identify them, I mainly look for the environmental label or the marking symbols on the car body. The environmental label is usually affixed to the corner of the front windshield, with star symbols indicating the emission level—for example, four stars represent China IV, and five stars represent China V. When purchasing a car, I can also find the vehicle conformity certificate label near the rear or engine compartment, which states the emission standard level. For used cars, I check the vehicle registration certificate or the 10th digit letter of the VIN code to infer the standard era. Different stages affect environmental performance and annual inspection requirements, with China V being cleaner, more energy-efficient, and allowed to drive in more urban areas. Paying attention to these symbols helps in choosing an environmentally friendly model.
As an experienced driver, the symbols for China IV and China V standards are quite easy to identify in daily use. The most straightforward indicator is the environmental label—a small sticker on the front windshield featuring star icons, where four stars denote China IV and five stars represent China V. Sometimes, emission markings are also engraved near the dashboard or on the inner door frame. You can also find this information on the vehicle’s nameplate or compliance certificate. The higher the standard, the more fuel-efficient and eco-friendly the vehicle tends to be. When choosing a car, I often prioritize China V or above, as they face fewer traffic restrictions in major cities. During annual inspections at the DMV, this is a key focus to ensure compliance with regulations. Overall, understanding these labels makes car ownership more reassuring and informed.
