How to Determine Whether a Vehicle is China 5 or China 6 Standard?

[Brooke]

You can identify whether a vehicle meets China 5 or China 6 standards by checking the vehicle's factory certificate, environmental protection standard list, or vehicle conformity certificate. Here is additional information: 1. Environmental Information Onboard List: As the name suggests, this document details the vehicle's environmental impact and clearly indicates the exhaust emission standard, whether it's China 5 or China 6. By reviewing this list, you can definitively determine the vehicle's emission stage. 2. Vehicle Conformity Certificate: This certificate explicitly states the vehicle's emission standard. Although it may not directly label the vehicle as China 5 or China 6, the emission standard code (e.g., GB18352.5 for China 5) allows for clear identification.

[VanessaLynn]

When I bought my car before, I specifically researched how to distinguish between China 5 and China 6 emission standards. The most direct method is to open the driver's door and look for the vehicle identification plate on the B-pillar, which clearly indicates the emission standard. If the plate is blurry and hard to read, there's a handy trick—open the hood and locate the environmental information label in the engine compartment. It will specify GB18352.5 for China 5 or GB18352.6 for China 6. Nowadays, you can also check via the Traffic Management 12123 app by entering the VIN, and the system will display the emission level. I recommend also reviewing the vehicle conformity certificate, which is delivered with the car at purchase—the third page contains a detailed description of the emission standard. However, note that implementation times vary by region. For example, vehicles manufactured after 2019 in the Pearl River Delta region are mostly China 6 compliant.

[IslaAnn]

I've helped friends check emission standards several times. The first choice is to look at the third page of the vehicle registration certificate—the page with the registration authority's stamp is the most accurate, more reliable than any mini-program. If the registration certificate is lost, don't panic. Flip to the last few pages of the vehicle user manual; there's usually an environmental protection section indicating the emission standard level. Alternatively, you can visit the Motor Vehicle Environmental Protection Network on the official website of the Ministry of Ecology and Environment. Entering the license plate number and engine number will give you the officially recorded data. Here's a lesser-known fact: National VI vehicles usually have a black dust cap on the fuel filler, while National V vehicles have a regular metal cap. If you're checking a used car, National VI vehicles have an orange OBD port under the co-driver's seat, whereas National V vehicles have a blue one.

[StErin]

Distinguishing between China 5 and China 6 emission standards has simple tricks. Just look for the environmental label sticker at the lower left corner of the windshield—yellow label indicates China 5, while green label means China 6. Scanning the VIN code on the windshield with a phone can also redirect you to a query page. I’ve also discovered a tip: open the engine compartment and check the EGR valve position—China 6 vehicles have noticeably more complex piping. Nowadays, many car models include electronic versions of environmental parameters in their owner’s manual apps. Of course, the fastest method is to visit a 4S dealership and use a diagnostic tool to read the OBD data stream, instantly revealing the emission standard. Remember, cars manufactured after 2019 are mostly China 6 compliant.

[ElisaLee]

From my personal experience, there are three reliable methods. First, call the manufacturer's 400 hotline and provide the VIN for verification—this is the most authoritative approach. Second, check the new car invoice where the purchase tax section will indicate the pollutant emission level. Lastly, review the compulsory traffic insurance policy, as some insurance companies record the environmental standard. If still uncertain, visit the DMV to access vehicle records—staff can resolve it in two minutes. By the way, China VI vehicles have a particulate matter recovery symbol on the fuel tank cap and a nitrogen oxide sensor in the engine bay, which are absent in China V models. I recommend taking photos as proof after verification—they’ll be useful during annual inspections.

[StSteven]

Many car enthusiasts often ask me this question, so I’ll share some personally tested and effective methods. The most straightforward way is to check the environmental information section on the third page of the vehicle conformity certificate, which clearly states whether it’s China 5 or China 6. Nowadays, new cars have a QR code label on the front windshield—scanning it will reveal the emission parameters. For used cars, you can inspect the engine model; for example, the third-generation EA888 is China 5, while the fourth generation is China 6. Here’s another tip: China 6 vehicles have a carbon canister installed at the end of the exhaust pipe, which is an additional metal canister compared to China 5. Don’t blindly trust intermediaries about the environmental label—it’s best to verify it yourself by entering the 17-digit VIN on the Motor Vehicle Environmental Protection Website and saving a screenshot for future reference.