How to Identify China 5 and China 6 Emission Standards?

[DeBrantley]

If it's a new car, you can check the vehicle's factory certificate or the environmental standard list. Below is relevant knowledge about identifying China 5 and China 6 standards: 1. Check the relevant content on the certificate: The vehicle's certificate contains many key pieces of information, including the emission standard, which will clearly indicate the national emission standard the vehicle complies with. For example, a China 5 vehicle will be labeled as "GB18352.5-2013 China V." Therefore, checking the certificate is a very effective method to determine whether the car you intend to purchase is China 5 or China 6. 2. Review the environmental information list included with the vehicle: When purchasing a car through official channels, the provided documentation will include an environmental information list. In the first section related to vehicle information, there will be an item for the emission stage, which will clearly and concisely indicate whether the model is China 5 or China 6. 3. Query through specialized websites: After identifying the model you intend to purchase, you can find specific vehicle identification numbers in the relevant documents, such as the engine number and chassis number. Then, by visiting the Motor Vehicle Environmental Protection Website and entering these numbers, you can query the vehicle's environmental information, including the emission standard it complies with. 4. Carefully verify the vehicle conformity certificate: During the vehicle delivery process, the dealer will provide the vehicle's conformity certificate. You can carefully check the relevant content, which includes an item named "Exhaust Emissions," detailing the specific national standard number referenced during certification. The standard number and corresponding year will indicate whether it is China 5 or China 6.

[Kelsey]

I used to have a headache over this issue too, until I found the most reliable method is to check the vehicle documentation. When we buy a car, we all receive an environmental information list that comes with the vehicle - this document is as clear as an ID card, explicitly stating whether it's China 5 or China 6 standard. If you can't find the paper document, just take out your phone, log into the Motor Vehicle Environmental Protection Website, enter the 17-digit VIN code located at the bottom left of the windshield along with the last six digits of the engine number, and you'll immediately find the registered emission standard. When I helped a friend check a used car last time, I discovered most vehicles manufactured after July 2019 had already upgraded to China 6 standard. But you still need to be cautious - some manufacturers might produce China 6 compliant vehicles earlier, so checking the specific model is safest. For example, China 6b compliant vehicles will have special markings near the exhaust pipe.

[DelLuke]

When I first changed cars, I spent a long time researching identification tricks. The easiest way is to directly check the vehicle registration certificate, where the emission standard (China 5 or China 6) is printed on the first page. If you're too lazy to flip through the booklet, pay attention to the environmental label sticker on the windshield—newly registered China 6 vehicles come with a dedicated QR code. The key is to check the specific model and year. For example, my neighbor bought a 2020 Corolla, which is China 6 compliant but belongs to the early Phase A, so its exhaust treatment device differs from the later Phase B version. I recommend downloading an official emissions-checking app, like the 'Auto Environmental Query' software I often use. It’s super convenient—just scan the VIN, and you’ll get results in three seconds without worrying about being scammed by scalpers.

[DiHolden]

I have some practical tricks to identify emission standards. First, open the engine hood and look for the nameplate - the third character of the engine model for China VI vehicles is usually 'R' or 'S'. Then squat down to check the exhaust pipe - China VI cars have an additional particulate filter installed, which is thicker than China V models. The most obvious indicator is the fuel filler cap - China VI models all have a yellow label stating 'Recommended to use China VI fuel'. Last year when helping my dad choose a car, these details surprised even the 4S store salesperson. Newer models also have dashboard prompts - China VI vehicles will light up an emission system self-check indicator during startup. For used cars, pay attention to the annual inspection sticker - China VI vehicles have darker-colored round environmental labels.

[Vickie]

Last week, I accompanied my best friend to pick up her new car and learned a few identification tricks. Directly ask the salesperson for the vehicle qualification certificate—the emission standard section is boldly marked as China V or China VI. Before viewing cars in the 4S showroom, touch the central control screen to enter the settings menu; new China VI-compliant vehicles have a dedicated emissions page under 'Vehicle Information.' Pay attention to the chassis number near the tires—for China VI vehicles, the 10th digit letter represents the year (L for 2020, M for 2021, and so on). The ECU module in the engine bay also differs—China VI versions have up to 40-pin connectors, with two additional oxygen sensor circuits compared to China V.

[StMelanie]

After suffering heavy losses from my last car swap, I've become wiser. Now I focus on checking the vehicle model filing announcements. By entering the vehicle model number on the MIIT website, the emission standard column in the results page is clearly displayed like a student's report card. In practice, pay attention to the engine numbering rules - the fifth digit of China VI engines is 'F' or 'G'. Be especially cautious with vehicles from the 2017-2018 transition period - I've seen inventory cars manufactured in late 2018 still stuck with China V standards. The data on the nameplate near the passenger side door sill is the most reliable. When encountering used cars with tampered odometers, cross-checking the manufacturing date recorded here with the national standard implementation timeline can instantly expose the trick.