What is the difference between China VI and China V?

2 Answers
DelJulia
07/29/25 6:10am
The difference between China VI and China V lies in the fact that China VI vehicles use a more efficient three-way catalytic converter, enabling the engine's exhaust emissions to meet the China VI standard. Below are the relevant details about the China VI and China V automotive emission standards: 1. China VI standard emission limits: China VI A: Carbon monoxide 700mg/km, Non-methane hydrocarbons 68mg/km, Nitrogen oxides 60mg/km, PM fine particles 4.5mg/km, etc.; China VI B: Carbon monoxide 500mg/km, Non-methane hydrocarbons 35mg/km, Nitrogen oxides 35mg/km, PM fine particles 3mg/km, etc. 2. China V standard emission limits: The carbon monoxide emission per kilometer driven must not exceed 1000 milligrams; The non-methane hydrocarbons emission per kilometer driven must not exceed 68 milligrams; The nitrogen oxides emission per kilometer driven must not exceed 60 milligrams; The PM fine particles emission per kilometer driven must not exceed 4.5 milligrams.
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CarlosRose
08/12/25 9:38am
As a car enthusiast, I often pay attention to changes in emission standards. The main differences between China 5 and China 6 standards lie in stricter emission limits and testing methods. China 6 imposes much lower limits on nitrogen oxides and particulate matter compared to China 5, with nitrogen oxide emission limits reduced by over 40%. More importantly, China 6 introduces real-world driving tests, requiring vehicles to meet standards under actual driving conditions, unlike China 5 which mainly relied on laboratory testing. This means vehicle control systems need to be more precise, effectively reducing actual pollutant emissions. Additionally, China 6 strengthens control over evaporative emissions, reducing harmful odors. In daily driving, I find China 6-compliant vehicles more helpful in improving urban air quality, though they may lead to slightly higher car prices for buyers. In the long run, choosing China 6 vehicles is more environmentally friendly and helps avoid traffic restriction issues.
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