How to Distinguish the National Emission Standard Symbols?
4 Answers
Methods to distinguish the national emission standard symbols: V represents National V (China 5). If I is on the left side of V, it means five minus one; if I is on the right side of V, it means five plus one. For example, National IV is China 4, and National VI is China 6. Relevant details are as follows: Currently, the National 6a emission standard is being implemented, which is a transitional standard used during the shift from National 5 to National 6. The National 6a standard specifies: 1. Carbon monoxide: Gasoline vehicles must not emit more than 700 milligrams of carbon monoxide per kilometer driven. 2. Non-methane hydrocarbons: Gasoline vehicles must not emit more than 68 milligrams of non-methane hydrocarbons per kilometer driven. 3. Nitrogen oxides: Gasoline vehicles must not emit more than 60 milligrams of nitrogen oxides per kilometer driven. 4. PM fine particles: Gasoline vehicles must not emit more than 4.5 milligrams of PM fine particles per kilometer driven.
I remember being completely confused about how to identify the China emission standard when I first bought my car. Luckily, an experienced neighbor car owner taught me some practical methods. The key is to look for the environmental label, which is affixed to the upper left corner of the windshield with blue background and white characters indicating "China V" or "China VI" and similar numbers. Labels before China IV had green backgrounds, which were later changed to blue. If the label is illegible, check the 10th digit of the Vehicle Identification Number (VIN) - the corresponding year can help determine the standard. Most China V compliant vehicles were produced after 2017. Later, I used a mobile app to query by entering the VIN and got instant results. This is crucial when buying cars, as higher-standard vehicles enjoy unrestricted access in urban restricted zones. Checking the registration certificate is even more reliable, as it clearly lists the emission level. Don't overlook standard upgrades - choosing a China VI compliant car can save you both trouble and money.
In daily car repair work, I often encounter car owners asking about this. Distinguishing between emission standards is actually not difficult. The most straightforward method is the environmental label, which is a round sticker with Roman numerals: IV represents China IV, V is China V, and VI is China VI. If the label is missing, you can use a diagnostic tool to read the OBD system data to obtain emission information. The VIN code is also useful—the digit in a certain position corresponds to the year, and vehicles after 2019 mostly comply with the China VI standard. I advise car owners to regularly clean the label to prevent it from getting dirty, as vehicles exceeding the standard face many traffic restrictions and fines. When checking the car, take a quick look at the label to ensure compliance with regulations.
I'm a new driver, and my friend taught me how to distinguish the China emission standard labels. Simply put, look for the environmental protection sticker. It's a small round label on the car window with Chinese characters like 'China V'. The newer ones are blue in color. You can also quickly check the VIN code online by entering the license plate number. Knowing the standard helps avoid traffic restriction troubles.
