How to distinguish the national emission standard of a car?

[LillianMarie]

Methods to distinguish the national emission standard of a car: 1. Check the vehicle's environmental protection label, which has a clear mark on the back; 2. Log in to the website of the Motor Vehicle Exhaust Pollution Supervision and Management Center to inquire, or bring the original or a copy of the vehicle registration certificate to the vehicle management office for inquiry; 3. For new cars, you can find the information in the vehicle's factory certificate, but generally, the certificate is kept at the vehicle management office. It is recommended to make a copy when buying a new car; 4. Make a rough distinction based on the year the car was registered. Most cars registered after 2008 are National IV, while cars registered in 2007 may be National III or National IV.