How to Identify China 6a or China 6b?
2 Answers
China 6b has not been officially implemented yet, and most vehicles on the market that comply with the China 6 standard currently meet the China 6a specifications. I. China 6a specifications are as follows: 1. Gasoline vehicles must not emit more than 700 milligrams of carbon monoxide per kilometer driven. 2. Gasoline vehicles must not emit more than 68 milligrams of non-methane hydrocarbons per kilometer driven. 3. Gasoline vehicles must not emit more than 60 milligrams of nitrogen oxides per kilometer driven. 4. Gasoline vehicles must not emit more than 4.5 milligrams of PM (particulate matter) per kilometer driven. II. China 6b specifications are as follows: (1) Gasoline vehicles must not emit more than 500 milligrams of carbon monoxide per kilometer driven. (2) Gasoline vehicles must not emit more than 35 milligrams of non-methane hydrocarbons per kilometer driven. (3) Gasoline vehicles must not emit more than 35 milligrams of nitrogen oxides per kilometer driven. (4) Gasoline vehicles must not emit more than 3 milligrams of PM (particulate matter) per kilometer driven.
Last time I bought a car, I was wondering how to distinguish between China 6a and China 6b, because it has a big impact on daily car use. You can directly open the hood to check the label inside or the nameplate on the door frame, which usually prints the emission standard. If you can't find it, the vehicle conformity certificate is an official document that the salesperson will give you when you buy the car, just flip through it to find out. The China 6b standard is stricter, which can reduce pollutants like PM2.5 and is more environmentally friendly, so choosing it gives you more peace of mind when driving. I recommend that new car owners check the environmental protection bureau's website before test driving, enter the VIN code for a free query, to avoid buying a car you'll regret and having to deal with traffic restrictions. I myself was too lazy to check properly and ended up with a China 6a car that cost me more in fuel and fines in the restricted zones of big cities.
