How to Distinguish Between National IV and National V Standards?
2 Answers
The methods to distinguish between National IV and National V standards are: 1. Check the corresponding standard number on the vehicle conformity certificate. The emission standard number for National V is GB18352.52013, while for National IV it's GB18352.32005; 2. Examine the environmental protection information vehicle checklist, which clearly indicates the emission standard; 3. Look at the posted vehicle fuel consumption label, usually affixed to the side window of the vehicle; 4. Check the vehicle qualification certificate; 5. Query the vehicle's emission standard on the Motor Vehicle Environmental Protection Website. After opening the page, find the public information query section at the bottom, then input the last 6 digits of the VIN and engine number to check the vehicle's emission standard.
I work in vehicle inspection, and there are three most reliable points to distinguish between China IV and China V standards. The tenth letter of the VIN: G stands for China IV, H for China V—this is the most accurate. The supplementary page of the green environmental label states China IV or China V, but the print is so small you’ll need a magnifying glass to read it. The new vehicle registration certificate directly prints the emission standard number in the designated column. China V vehicles have an added urea tank near the exhaust pipe, and the exhaust pipe doesn’t feel hot to the touch. You can check the emission standard by entering the license plate number on the environmental website, but some older vehicles may not be listed. When buying a used car, don’t trust the dealers’ claims—I’ve seen cases where China IV labels were removed to pass off as China V.
