How to Distinguish Between China IV and China V Vehicle Standards?
3 Answers
There are several key differences between China IV and China V vehicle standards: 1. Compared to China IV, the China V standard reduces nitrogen oxide (NOx) emissions by 25% for light-duty vehicles and 43% for heavy-duty vehicles. 2. The most significant difference is that China V imposes stricter emission limits on heavy-duty vehicles, with higher standards for nitrogen oxides (NOx), combined hydrocarbons and nitrogen oxides (HC-NOx), and particulate matter (PM) concentrations. 3. Additionally, China V introduces new standards for particulate number (PN) and non-methane hydrocarbons (NMHC).
The difference between China's National IV and National V emission standards is quite practical to understand. National IV vehicles were generally produced between 2010 and 2016, with less stringent emission controls. They have lower limits for sulfur compounds and nitrogen oxides, which can lead to heavier exhaust pollution. National V vehicles, introduced after 2016, have higher standards and require an additional DPF filter to reduce harmful gases. Distinguishing between them is simple: check the environmental information on the vehicle registration certificate—IV indicates National IV, while V indicates National V. Also, look for the environmental label on the vehicle, usually located inside the door or under the hood. I often help relatives choose cars, and when dealing with older vehicles, checking the documents makes it clear. For example, during a recent used car test drive, I directly checked the standard using the VIN code in the dealership's system. The key point is that many cities now have restrictions on vehicle transfers—National V vehicles can be registered and driven in cities, while National IV vehicles may face limitations. So, always confirm before buying to avoid issues. By the way, regular maintenance and inspections can also reveal differences in emission performance.
The classification of China IV and China V standards is quite important, especially for young car enthusiasts who often encounter it when modifying cars. Simply put, the China IV standard is older, mostly applied to vehicles manufactured before 2016. Some models under this standard have simpler exhaust treatment systems, resulting in more noticeable smoke emissions. The China V standard is much newer, with stricter controls, requiring vehicles to be equipped with components like nitrogen oxide sensors. How to tell them apart? First, use a mobile app like 'Yiche' or 'Autohome' to check—just enter the license plate or VIN, and the standard will be displayed instantly. Also, look for the production date label near the windshield; vehicles manufactured after 2016 are mostly China V. I once made a mistake when modifying an older car—after checking, I found it was China IV and had to upgrade some parts later. The upgrade in standards is actually for environmental protection, improving urban air quality, but China V vehicles may have slightly higher maintenance costs in the long run. I recommend young buyers search online for model and year data before purchasing to avoid buying the wrong standard and affecting their driving enjoyment.
