How to Distinguish the National Emission Standard of a Sedan?

[VanColin]

Methods to distinguish the national emission standard of a sedan: 1. Check the vehicle's environmental protection label directly, which has clear markings on the back; 2. Visit the website of the Motor Vehicle Exhaust Pollution Supervision and Management Center for inquiry; 3. Bring the original or a copy of the motor vehicle registration certificate (for new cars, you can use the vehicle's factory certificate) and inquire at the vehicle management office. The automobile emission standards are established to implement environmental protection laws, reduce and prevent pollution from vehicle exhaust, protect the ecological environment, and ensure human health. These standards aim to control the emission of harmful gases such as CO (carbon monoxide), HC (hydrocarbons), NOx (nitrogen oxides), and PM (particulate matter, soot) from vehicle exhaust.