How to Identify China 4 and China 5 Standards?
4 Answers
China 4 emission standard is marked as IV, while China 5 emission standard is marked as V. The China 4 emission standard is the fourth stage of national motor vehicle pollutant emission standards, and the China 5 standard is equivalent to the EU's Euro 5 standard. Each upgrade in the standard reduces vehicle pollution by 30% to 50%. The following are the differences between China 4 and China 5 standards: 1. Under the new China 5 standard, nitrogen oxide emissions from light-duty vehicles can be reduced by 25%, and from heavy-duty vehicles by 43%. 2. Compared to China 4, the biggest difference in China 5 is stricter emission requirements for heavy-duty vehicles, followed by higher standards for nitrogen oxides (NOX), the sum of hydrocarbons and nitrogen oxides (HCNOX), and particulate matter (PM) concentration. 3. China 5 introduces standards for particulate matter particle count (PN) and non-methane hydrocarbons (NMHC).
As a seasoned driver with over a decade of experience, I frequently keep up with vehicle policies. Identifying China IV and China V emission standards isn’t difficult—just focus on a few key points: First, the color of the environmental label differs—China IV usually has a yellow sticker, while China V is green, affixed to the top-left corner of the windshield. Second, check the vehicle registration certificate or license plate document; the emission standard is clearly stated in the relevant section. Third, use mobile apps like the official Ministry of Ecology and Environment mini-program—just enter the license plate number for instant results. Don’t underestimate this issue—major cities now have strict traffic restrictions, and even China IV vehicles struggle to drive outside Beijing’s Fifth Ring Road. Regretting a new car purchase later is too late. Remember, manufacturing years around 2017 mostly comply with China V, so be extra cautious when buying used cars and clarify with the seller. Maintenance is also crucial to avoid fines for excessive emissions. In short, taking the time to check saves hassle, money, and helps the environment.
As a car repair shop worker, I help customers check emission standards daily. To identify China IV or V, just check the engine compartment nameplate - China V is marked as GB17691-2005 Stage V. Alternatively, use a diagnostic tool to read OBD port data where emission parameters are clearly displayed. The VIN also provides clues - decoding the last few digits can confirm. China V vehicles usually have particulate filters, so replacement parts must match the standard to pass inspections. Novice drivers often overlook this, resulting in fines when driving in restricted zones. I recommend verifying emission standards when buying new cars or during maintenance - don't cut corners. With stricter environmental policies, accurate identification ensures worry-free driving.
I think everyone should pay attention to environmental protection, and identifying vehicle emission standards is essential. The difference between China IV and China V lies in exhaust control, with China V emitting far fewer pollutants. The identification method is simple: log on to the environmental protection bureau's website, enter the license plate number, and the results come out quickly. With poor air quality now and the implementation of traffic restriction policies, China IV vehicles are restricted in some cities. Checking before buying can avoid road troubles. We encourage everyone to switch to China VI new vehicles, which are better for health and the environment. Don't wait until you're stopped to check; taking action in advance is the most reliable.
