What symbols represent China IV and China V?

2 Answers
Maximus
07/28/25 8:51pm
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.
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SanJosie
08/12/25 1:34am
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.
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