Which Year's Cars Belong to National III Emission Standard?

1 Answers
DeMaria
07/30/25 12:26am
National III refers to vehicles produced between 2007 and 2011. The National III standard primarily applies to light gasoline and diesel vehicles under 3.5 tons, equivalent to the Euro III standard. The nationwide implementation date was July 1, 2007. Below is more information about National III vehicles: 1. National III vehicles are more fuel-efficient than National II vehicles, but this is primarily evident during long-distance and stable driving. For short-range operations, the impact on fuel consumption is minimal. 2. The National III standard represents China's third-stage vehicle emission standard, equivalent to the Euro III emission standard in terms of tailpipe pollutant levels. The key difference is that new vehicles must be equipped with an OBD (On-Board Diagnostics) system. Additional information: 1. The On-Board Diagnostics system features increased detection points and systems, with oxygen sensors installed at both the inlet and outlet of the three-way catalytic converter. 2. Compliance is fully ensured through real-time monitoring of vehicle emissions, which better guarantees the enforcement of the Euro III emission standard.
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