How to Identify National IV and National V Emission Standards for Vehicles?
2 Answers
Methods to identify National IV and National V emission standards for vehicles: 1. Check the environmental protection label in the upper right corner of the car's windshield. There are clear markings on the back of the environmental protection label; 2. You can also roughly distinguish based on the year the car was registered. Vehicles registered after July 1, 2017, are generally National V, while most vehicles registered between 2008 and 2017 are National IV. Starting from January 1, 2018, all motor vehicles nationwide will fully implement the National V emission standard. Compared to the National IV standard, the National V emission standard for motor vehicles reduces nitrogen oxide emissions by 25% for light-duty vehicles and 43% for heavy-duty vehicles.
As a seasoned car enthusiast, I've accumulated practical experience in distinguishing between China IV and China V emission standards. The most reliable method is to check the vehicle's registration certificate, commonly known as the 'green book', which clearly states the emission type in black and white, such as directly labeling 'China V' or similar terms. The supplementary page of the driving license might also have records—just flip through to find the key information. Another intuitive approach is to look at the environmental protection label sticker on the car's windshield, which is updated after annual inspections to display 'China IV' or 'China V' identifiers. Judging based on the vehicle's registration year is also practical, as the China V standard was implemented nationwide in 2017, so cars registered after 2017 are generally China V compliant. The China IV standard was promoted earlier, so vehicles from around 2011 require extra attention. I often help friends vet cars in the used car market—the 10th digit of the VIN code represents the year, which can provide clues, but it's not entirely reliable. In actual driving, these standards have a significant impact, especially in cities with traffic restrictions like Beijing, Shanghai, and Guangzhou, where China IV vehicles might be barred from core areas, affecting convenience. I advise car owners to regularly organize their documents to ensure accuracy and avoid trouble.
