What symbols are used to represent China 5 and China 6?
2 Answers
“China V” and “China VI” represent China 5 and China 6 respectively. Below is a related introduction to the China 5 and China 6 standards: 1. The "China 6" standard adopts the principle of fuel neutrality, meaning that regardless of the type of fuel used, the emission limits are the same. In the previous "China 5" stage, the emission standards for diesel and gasoline vehicles were different. 2. Compared to China 5, the China 6 standard reduces nitrogen oxides by 77% and particulate matter by 67%, introduces a limit requirement for particle number (PN), and tightens the durability requirements for emission control devices and the related requirements for on-board diagnostic systems (OBD). 3. The emission standards for the "China 6a" stage are basically the same as those for "China 5," merely adopting the strictest values from the "China 5" emission requirements. "China 5" requires that carbon monoxide emissions from gasoline vehicles must not exceed 1g/km, while diesel vehicles must not exceed 0.5g/km. In "China 6a," the carbon monoxide emissions for both types of vehicles must not exceed 0.5g/km.
I know the symbols for China 5 and China 6 are quite simple—'China 5' represents China's fifth-stage vehicle emission standard, while 'China 6' stands for the sixth stage. These symbols are commonly found on vehicle compliance certificates and environmental labels, making it easy for the general public to identify them. When buying a car, it's important to pay attention to this because China 6 is much stricter, emitting far fewer pollutants, such as reduced nitrogen oxides and particulate matter, which benefits environmental and public health. I often remind my friends to check the nameplate or registration certificate when inspecting a new or used car—it's all clearly stated there. Older models are mostly China 5, while newly manufactured cars now adhere to the China 6 standard. Understanding this can also help in choosing a more suitable vehicle, especially under urban traffic restriction policies in big cities, where China 6 cars have an easier time getting licensed. Don’t overlook the differences—China 6 is divided into two phases, 'a' and 'b,' implemented gradually since 2019, with phase 'b' having even stricter requirements to ensure automakers keep up with technological advancements. Overall, though these symbols may seem small, they play a significant role in our daily driving and environmental contribution. Learning a bit of basic knowledge is definitely worth it.
