How to Identify China 6 Emission Standards?

[VonSophia]

China 6 emission standards can be identified through the following methods: 1. Online inquiry; 2. Checking the information on the vehicle conformity certificate; 3. Consulting the environmental protection information list. When taking delivery of the vehicle, the dealer is required to provide the vehicle's conformity certificate, which normally contains information related to the emission standards, usually indicated in the form of specific national standard codes. The China 6 Motor Vehicle Pollutant Emission Standards are established in accordance with the Environmental Protection Law of the People's Republic of China, aiming to prevent and control environmental pollution caused by exhaust emissions from compression-ignition and gas-fueled spark-ignition engine vehicles, protect the ecological environment, and safeguard human health.

[VanCourtney]

As a seasoned driver with over a decade of experience, I can share a few key ways to identify China 6 emission standards. When you purchase a new car, there's always a yellow environmental label on the windshield with 'China VI' printed in bold. If the label is missing, don't worry—just check item 15 on the Vehicle Conformity Certificate under the 'Emission Standard' section, where it's clearly stated. Nowadays, new cars have a blue 'i' badge embedded on the left side of the dashboard, which is the OBD (On-Board Diagnostics) symbol, a feature exclusive to China 6 vehicles. For used cars, you need to be more thorough. Flip to the 'Registration Information' page in the vehicle registration book (big green book), where China 6 vehicles will specify the GB18352.6 standard. It's best not to take the seller's word for it—the most reliable method is to enter the VIN on the environmental protection bureau's website to verify.

[WalterLee]

Having worked in the used car appraisal industry for seven years, identifying China 6 emission standards requires expertise. First, check the third page of the vehicle's environmental protection list, which contains the officially issued emission certificate. Then inspect the engine compartment—China 6 vehicles are equipped with two sensors: the front oxygen sensor is located behind the exhaust manifold, and the rear oxygen sensor is positioned after the catalytic converter. Always ask the seller to provide the tax payment certificate; imported vehicles purchased after 2019 that were taxed under China 5 standards are likely problematic. The most authoritative method is to verify the vehicle identification number (VIN) on the Motor Vehicle Environmental Protection Website—if no information is found, be cautious. Pay special attention to vehicles registered in cities like Shanghai and Guangzhou, which implemented emission restrictions early—cars from these areas in 2019 are mostly China 6 compliant.

[VonSerenity]

Identifying China 6 emissions mainly relies on the onboard diagnostic system. The China 6 standard requires OBD to monitor nitrogen oxide values in real-time, which China 5 vehicles cannot achieve. Check the emissions section of the manual to see if it mentions PN particulate limits, as China 6 has additional requirements for particulate emissions. Open the engine hood to locate the catalytic converter; the three-way catalytic converter used in China 6 vehicles is noticeably thicker than those in China 5. When purchasing insurance for a new car, remember to ask clearly, as China 6 vehicles enjoy discounts on compulsory traffic insurance rates. Turbocharged models are mostly China 6 compliant, while naturally aspirated engines require extra attention to verification.

[DeDonovan]

From an environmental engineer's perspective, identifying China VI compliance requires checking the exhaust treatment system. China VI vehicles must be equipped with a Gasoline Particulate Filter (GPF) in the exhaust pipe – a flashlight inspection reveals its honeycomb structure. Emission test data provides clearer evidence: China VI mandates a CO emission limit of 1.0g/km, representing a 30% reduction from China V standards. Currently, China VI has two phases (A and B), with only B-phase vehicles meeting the strictest requirements. The simplest method is checking manufacturing dates: gasoline vehicles produced after July 2019 and diesel vehicles after July 2021 are China VI compliant. We recommend the WeChat mini-program 'Scan for Emission Info' – scanning the QR code on the compliance certificate provides authoritative data.