How to Identify the Symbols for National Emission Standards?
2 Answers
The method to identify the symbols for national emission standards is as follows: I1, II2, III3, IV4, V5, VI6. From National I to National VI, the emission standards vary at different stages. Under the new policy, vehicles meeting National IV standards and above can still legally operate on the road, while those below are only permitted in some cities. Currently, the latest National VI standard has seen significant upgrades compared to National V, hence it is divided into two phases: National VIa and National VIb. In the National VIb phase, most indicators are 50% stricter than National V standards. Implementing National VI can lead to a noticeable improvement of over 10% in urban air quality.
Last time I helped a friend check out a used car, I paid special attention to this. To identify the China emission standard (Guo Ji) of a vehicle, you mainly need to look at the vehicle's nameplate or environmental label, usually located on the passenger door frame or inside the engine compartment. From my experience, open the passenger door, and you'll find an aluminum plate at the bottom of the door frame indicating the vehicle's manufacturing year. Here's the key! Look for codes starting with GB, such as GB18352.5-2013. The number after the decimal point is crucial—5 represents China 5, and 6 is China 6. Currently, many cities restrict vehicles below China 4, so you must pay close attention to this number when buying used. The emission standard is also noted on the green registration certificate, and you can double-check it during the transfer process.
