What do China V and China VI vehicles mean?

[Bryce]

China V and China VI vehicles refer to the national standards for vehicle exhaust emissions. The higher the number, the more environmentally friendly the vehicle's exhaust is. The emission standards impose stricter limits on pollutants such as nitrogen oxides, hydrocarbons, carbon monoxide, and particulate matter, aiming to reduce and prevent environmental pollution from vehicle exhaust, protect the ecological environment, and ensure human health. Methods to check whether a vehicle is China V or China VI include: 1. The vehicle's factory certificate; 2. The vehicle's environmental standard list; 3. Checking the vehicle conformity certificate. The difference between China V and China VI lies in the carbon monoxide emission levels: China V allows 1000mg, while China VI allows 700mg.