How to Distinguish National Emission Standard Symbols?
3 Answers
Methods to distinguish national emission standard symbols: V represents China 5 (National V). If I is on the left of V, it means five minus one; if I is on the right of V, it means five plus one. For example, China 4 is represented as IV, and China 6 is VI. Currently, the China 6a emission standard is being implemented, which serves as a transitional standard between China 5 and China 6. The China 6a standard stipulates: 1. Gasoline vehicles must not emit more than 700 milligrams of carbon monoxide per kilometer; 2. Gasoline vehicles must not emit more than 68 milligrams of non-methane hydrocarbons per kilometer; 3. Gasoline vehicles must not emit more than 60 milligrams of nitrogen oxides per kilometer; 4. Gasoline vehicles must not emit more than 4.5 milligrams of PM (particulate matter) per kilometer.
I think distinguishing between China's emission standards is actually quite simple, with a few key points to observe in daily life. The most common method is checking the environmental label sticker on the upper right corner of the windshield, which clearly displays China IV, China V, or China VI – a quick glance tells all. Alternatively, refer to the vehicle's documentation like the driving license or motor vehicle registration certificate; the technical parameters section will specify the emission standard level. If physical documents are unavailable, try entering the Vehicle Identification Number (VIN) into an official app for instant verification. Last year during an inspection, I encountered a blurred label issue, but the mechanic confirmed it was China V, emphasizing that correctly identifying this standard helps avoid urban access restrictions or annual inspection problems – a handy trick indeed.
I always thought distinguishing between China's emission standards symbols should be easy for beginners, relying mainly on basic observation. When I first started driving, I was completely clueless, but later I learned the trick: look for the nameplate or label in the engine compartment, which indicates the emission standard, such as GB18352.5 corresponding to China V. Another method is to infer based on the vehicle's production year. For example, new cars after 2017 are generally at least China V, and around 2020, they switched to China VI. Combine this with the model for judgment. In daily car use, not understanding these symbols can affect insurance pricing or transfer procedures. I recommend developing a habit of regularly checking labels or consulting professionals to avoid small misunderstandings turning into big troubles.
