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What are the differences between China IV and China V emission standards?

1 Answers

SanEmery

07/29/25 6:06pm

The differences between China IV and China V emission standards for vehicles are: different nitrogen oxide (NOx) emission standards, different non-methane hydrocarbon (NMHC) emission standards, and different particulate matter (PM) concentration emission standards. Different nitrogen oxide (NOx) emission standards: The China IV NOx emission standard is 0.08; the China V NOx emission standard is 0.06. Different non-methane hydrocarbon (NMHC) emission standards: China IV has no NMHC emission standard; the China V NMHC emission standard is 0.068. Different particulate matter (PM) concentration emission standards: China IV has no PM concentration emission standard; the China V PM concentration emission standard is 0.0045. Methods to distinguish between China IV and China V vehicles include: checking the vehicle fuel consumption label; inspecting the vehicle nameplate; and examining the vehicle engine model. The China V motor vehicle pollutant emission standard, known as the 'China V standard,' has an emission control level equivalent to the European Union's fifth-stage emission standard currently in effect. The EU has been implementing this standard since 2009, imposing very stringent limits on vehicle emissions such as nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles. From China I to China V, each upgrade in the standard reduces vehicle pollution by 30% to 50%.

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