How to Check China 6a or China 6b?
3 Answers
To determine whether a vehicle complies with China 6a or China 6b standards, you can check the relevant information on the vehicle's certificate of conformity or the environmental protection information list provided with the vehicle. Alternatively, you can use specialized websites for verification. Check the Certificate of Conformity: The vehicle's certificate of conformity contains key information, including the emission standard the vehicle complies with. Check the Environmental Protection List: Review the environmental protection information list provided with the vehicle when purchasing through official channels. The first section of this list includes details about the vehicle's emission stage, clearly indicating the emission standard of the model. Query via Specialized Websites: Use specialized websites to verify the emission standard. After identifying the specific model you intend to purchase, locate the vehicle identification numbers, such as the engine number and chassis number. Then, visit the official vehicle environmental protection website and enter these numbers to access the vehicle's environmental protection information, including the applicable emission standard.
I remember learning this trick when I last changed cars. To check whether it's China VI-A or VI-B, the most straightforward method is to look at the vehicle's Certificate of Conformity (CoC), which clearly states the emission standard like 'CHINA VI B'. If you don't have the certificate, check the environmental label sticker on the windshield—it also prints the standard level. If there's nothing, use the VIN to search online. Enter the VIN on the Ministry of Ecology and Environment's official website or the WeChat mini-program 'Automobile Emission Inquiry', and you'll get the result in seconds. The production date is also crucial—cars produced after 2021 are almost all China VI-B, while the VI-A standard was used during the transition period from 2019 to 2021. I recommend getting official documents from the dealer when buying a car—don't be careless, as some cities won't license China VI-A vehicles. A friend bought a used Toyota and only confirmed it was VI-B by checking the sticker, saving a lot of hassle. A simple step: take a photo of the VIN and search it on your phone—it's safe and convenient.
I've been fascinated by car data since childhood. Checking the China 6 emission standard mainly involves VIN code queries. Open your mobile browser, search for 'Ministry of Ecology Vehicle Emission Database', input the 17-digit VIN, and it immediately shows whether it's a or b. The difference lies in emission limits - China 6b is stricter with 30% fewer particulate emissions, making it more environmentally friendly. The tool is super simple - you can also scan the QR code on the car via WeChat or use dedicated apps at 4S stores. Personally, I like checking system settings when selecting cars, as some models display standard history in their information screens. I remember when I changed cars, comparing my old China 6a vehicle which was noisier to the smoother-starting 6b new car. More benefits: zero query cost and it helps prevent registration rejection. The key is don't guess - use digital methods to solve it in one go.
