What is the China III Emission Standard?

[Wren]

China III Emission Standard refers to the third stage of China's automobile emission standards. The National Stage III emission standard is equivalent to the Euro III emission standard, with the difference that new vehicles must be equipped with an OBD (On-Board Diagnostics) system. The characteristics of the OBD system include an increase in detection points and detection systems, with oxygen sensors installed at both the inlet and outlet of the three-way catalytic converter. Below are relevant details: 1. China III Standard: According to Announcement No. 5 of 2006 by the State Environmental Protection Administration, "Announcement on the Release of New Motor Vehicle Models and Engine Types that Meet the National Stage II and Stage III Emission Limits," the China III standard mainly applies to light gasoline and diesel vehicles under 3.5 tons, equivalent to the Euro III standard, with a nationwide implementation date of July 1, 2007. 2. Enhancements of the China III Standard: The China III standard represents a significant improvement, primarily emphasizing the emission standards for vehicles at -7 degrees Celsius, which is unique internationally; another aspect is the zero-start emission standard for vehicles, OBD (On-Board Diagnostics). Throughout the vehicle's usage, if any emission-related issues arise, the vehicle will automatically issue an alert, and the owner should take it to a service station for repair to resolve the issue.