How to Distinguish Between National IV and National V for Trucks?
2 Answers
Trucks are distinguished between National IV and National V mainly based on emission standards. The following are the specific details: 1. Sulfur Emissions: The upper limit for sulfur content emissions under the National IV standard is 50mg/kg, while under the National V standard, it is 10mg/kg. 2. Particulate Matter: The National V emission standard requires the particulate matter emission limit to be below 0.0045g/km, whereas the National IV emission standard requires it to be between 0.025-0.060g/km. 3. Nitrogen Oxides: Under the National V standard, nitrogen oxide emissions for light-duty vehicles are reduced by 25%, and for heavy-duty vehicles, they are reduced by 43%.
I remember when I changed my truck a few years ago, I also had to distinguish between China IV and China V standards. My method was to first check the vehicle nameplate, which has the production date and emission standard code; most China V vehicles were produced after 2017, while China IV ones were earlier. Then I would look at the vehicle registration certificate, where the environmental protection bureau's stamp provides detailed information—China V is marked as V standard. If that information was incomplete, I would use a mobile app to scan the VIN code and input it into the system to check, or directly call the vehicle management office to confirm. In terms of driving, China V engines are quieter because they have a urea injection system that treats exhaust more cleanly. Distinguishing these is quite important to avoid buying a high-emission vehicle and facing fines or driving restrictions. Doing some homework before buying a car saves trouble later on.
