Is Euro 3 Equivalent to China 4 or China 3?

[OJulia]

Euro 3 is equivalent to China 3 emission standards. Euro 3 is an automotive exhaust emission standard established by the European Union, primarily applicable to light gasoline and diesel vehicles weighing up to 3.5 tons. Euro 3 mandates that commercial vehicles limit their exhaust emissions of hydrocarbons, carbon monoxide, nitrogen oxides, and particulates to 0.66%, 2.1%, 5%, and 0.1%, respectively. European emission standards include: Euro 1, Euro 2, Euro 3, Euro 4, Euro 5, and Euro 6. Automotive emission standards refer to the regulations limiting harmful gases such as carbon monoxide, hydrocarbons, nitrogen oxides, particulates, and soot emitted from vehicle exhaust. According to the 'Announcement on the Release of New Motor Vehicle Models and Engine Types Meeting the Second and Third Stages of National Motor Vehicle Emission Standards,' China 3 standards mainly apply to light gasoline and diesel vehicles weighing 3.5 tons, equivalent to Euro III standards. The nationwide implementation date was July 1, 2007. The China 3 standard represents a significant improvement, particularly emphasizing emission standards for vehicles at -7 degrees Celsius, which is unique and not found abroad. Another feature is the zero-start standard for vehicles, including OBD (On-Board Diagnostics). If any emission-related issues arise during vehicle operation, the system will automatically alert the owner, who should then visit a service station for repairs to resolve the issue.