Which letter represents China V?

2 Answers
DiHarley
07/24/25 6:28am
China V is represented by the letter V, where V stands for the Roman numeral 5. China V refers to the automobile exhaust emission standard, officially known as the National Fifth Stage Emission Standard for Motor Vehicle Pollutants, or China V standard. Below is an introduction to automobile emission standards: 1. Emission standard codes: Ⅰ represents China I emission standard, Ⅱ represents China II emission standard, III represents China III emission standard, Ⅳ represents China IV emission standard, V represents China V emission standard, and Ⅵ represents China VI emission standard. 2. Purpose of emission standards: Automobile emission standards are established to implement environmental protection laws, reduce and prevent pollution caused by vehicle exhaust, protect the ecological environment, and ensure human health. Their main purpose is to control the emission of harmful gases such as CO (carbon monoxide), HC (hydrocarbons), NOx (nitrogen oxides), and PM (particulates, soot) from vehicles.
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OAriana
08/11/25 2:12am
As a car enthusiast, I've done quite a bit of research on standard details. China's National 5 emission standard is represented by the letter V, which means the same as Euro 5 in Europe. The Chinese emission standards use Roman numerals after the 'National' character, so 5 is V, and it's marked as 'National V' on the environmental label affixed to vehicles. The used car I bought last time was National 5 compliant, a standard introduced in 2017 with stricter emission requirements, such as reduced carbon monoxide levels. Although the current National 6 standard is now VI, National 5 vehicles are still widely circulating in the used car market at more affordable prices. Last month, while helping a friend check a car, I found that most domestic cars from 2017 to 2020 are National 5 compliant, with V marked in the documents. Understanding this helps in avoiding traffic restrictions, such as in emission control zones in big cities. For new cars, I'd recommend looking at the new National 6 standard for better environmental protection.
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