How to Distinguish China 5 and China 6 Standards by VIN?

[DelKai]

Visit relevant query websites such as the Motor Vehicle Environmental Protection Network, and directly input the vehicle identification number and engine number to check. This document will clearly indicate the vehicle's exhaust emission standard - China 5 vehicles will display "China 5", while China 6 vehicles will show "China 6". The VIN can be directly viewed in the corner of the front windshield. The tenth character (a letter) represents the vehicle's production year - A stands for 2010, with subsequent letters representing later years.

[McCharlotte]

I found many people mistakenly believe the VIN can directly indicate the emission standard, but it actually can't. Last year when I helped a friend pick a used car, I specifically researched this—the 17th digit of the VIN is just a check digit. To accurately distinguish between China 5 and China 6 standards, it's best to check the environmental label, which is clearly marked on the small sticker in the lower left corner of the windshield. Additionally, checking through official channels is the most accurate method. For example, entering the complete VIN on the Ministry of Ecology and Environment's website yields results in 30 seconds. Nowadays, many used car platforms also automatically display emission data. When inspecting a car, just take a photo of the last eight digits of the VIN with your phone and upload it to their system—the results appear instantly.

[Patricia]

Last time during the vehicle inspection, I chatted with the technician about this. He said the simplest way is to check the supplementary page of the vehicle license. For new licenses, there's a 'China VI' mark printed in the remarks column. If it's not on older licenses, you can check the vehicle conformity certificate. If you're really unsure, just note down the VIN and swipe it at the self-service machine in the vehicle management office - the emission standard is clearly recorded in the system. When I checked my own car, I found that most vehicles manufactured before 2017 are China V, with a gradual transition to China VI after that, but the specific standard should always be verified against the system records.

[LeKai]

As someone who frequently deals with various vehicles, I recommend directly calling the manufacturer's 400 hotline and providing the VIN for verification. Last week, I helped a neighbor check his 2018 Honda, and the customer service confirmed it was a China 5 model within two minutes. Of course, the vehicle's nameplate can also assist in judgment, as the aluminum plate near the engine is stamped with the emission standard code, with China 6 typically marked as CHINA6. However, the most authoritative method is the Motor Vehicle Environmental Protection Website, where entering the VIN will display the certified emission stage.

[DiMatthew]

This is a frequently asked question in car enthusiast groups. My usual method is to check the environmental protection vehicle list, where the emission standard is clearly stated in the paper documents provided at the time of purchase. The electronic version is also acceptable. After binding the vehicle on the Traffic Management 12123 APP, the emission standard can be found in the archive information section. Specifically, look for the VIN position, the 17-digit code at the lower edge of the windshield, and enter it completely into the query page of the Ministry of Ecology and Environment's official website. This is much more reliable than guessing by eye. For China VI vehicles, the 10th digit of the VIN is mostly a letter after L, but the encoding rules vary greatly among different manufacturers.

[CamillaFitz]

Once at a 4S shop, I saw a mechanic using a professional method: reading the ECU data corresponding to the VIN through the OBD interface. For us ordinary people, it's simpler—just note down the last six digits of the VIN, then open a WeChat mini-program and search for 'Vehicle Emission Inquiry.' Dozens of platforms can provide free checks. I tried checking my 2016 Ford Focus, and the result showed GB18352.5-2013, which is the China 5 standard. Currently, China 6 is divided into two phases, 6a and 6b, and vehicles manufactured after 2023 generally meet the stricter 6b standard.