What are the methods to check the emission standard of a vehicle?

[LeMason]

Here are the methods to check the emission standard of a vehicle: 1. Check the back of the car's environmental protection compliance label, where you can easily find the emission standard. 2. The first page of the vehicle's qualification certificate contains a description of the emission standard, but it is not directly written as "National X"; instead, it is a string of characters. 3. You can roughly estimate the vehicle's emission standard based on the year of manufacture. 4. Take the vehicle registration certificate to the local vehicle management office for inquiry, or a photocopy can also be used for checking. Below is some related information about vehicle emission standards: 1. The main difference between different national emission standards is that the standard values for pollutants are stricter, with limits reduced by multiples, and the required purification technology is more advanced. 2. The standards are mainly distinguished by the values of HC emissions, CO emissions, and NOx emissions. The higher the number in "National X," the smaller the emission values.

[Michelle]

I usually enjoy studying vehicle standards while driving, and checking the national emission standard is actually quite simple. There are several main methods: First, check your vehicle's registration certificate or license plate, which usually clearly states the national standard, such as National IV or National VI. Secondly, the small environmental label attached during the annual inspection will also indicate the standard. If it's inconvenient to find these documents, using a smartphone is very handy—download an official app or a WeChat mini-program, enter the license plate number, and you can query it. Additionally, the Vehicle Identification Number (VIN) is also a clue—you can compare it with online databases based on the manufacturing year to estimate the approximate level. I recommend checking this regularly, as vehicles with higher national standards are more environmentally friendly and can avoid urban restricted zones. In short, don’t make it too complicated; starting with simple steps can get it done, especially when maintaining your vehicle—paying attention to it together saves effort.