What is the difference between China V and China VI engines?

2 Answers
DiHailey
07/25/25 6:00am
The biggest difference between China V and China VI engines lies in the fact that China VI vehicles use a more efficient three-way catalytic converter. Below are detailed introductions about China V and China VI: 1. China V and China VI refer to the national automobile emission standards: Emission standards regulate the content of harmful gases such as carbon monoxide, hydrocarbons (HC), nitrogen oxides (NOx), particulate matter, and soot in vehicle exhaust. 2. China V and China VI have different environmental protection levels: China VI sets higher emission standards for automobile engines and a higher environmental protection level. The China VI standard stipulates that the sulfur content in emissions should not exceed 50mg/kg, while the China V standard stipulates that the sulfur content should not exceed 10mg/kg.
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EmeryLynn
08/10/25 5:56pm
I've driven many cars before and noticed significant differences in emission standards between China V and China VI engines, primarily aimed at reducing air pollution. China VI is much stricter than China V, requiring over 40% less nitrogen oxide emissions and lower particulate matter, which will greatly improve urban smog issues. Data from many cities shows noticeable air quality improvements after China VI implementation, such as more blue-sky days in Beijing. China VI also added evaporative emission controls to prevent gasoline odors and air pollution, benefiting public health. Additionally, China VI vehicles require more advanced engine technology to meet standards. From an overall trend perspective, upgrading to China VI is key to China's push for sustainable transportation. As a car owner, I feel more assured and environmentally friendly using China VI vehicles, reducing carbon footprints and supporting the nation's green initiatives.
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