What is the difference between China V and China VI on vehicles?
4 Answers
The differences between China V and China VI include different fuel principles and emission standards. Here are the detailed explanations: Different fuel principles: During the China V phase, diesel and gasoline vehicle models had different emission standards; China VI adopts a fuel-neutral principle, meaning the emission limits are the same regardless of the fuel type. Different emission standards: The China V standard reduced nitrogen oxide emissions by 25% for light-duty vehicles and 43% for heavy-duty vehicles compared to China IV; the China VI standard further reduces particulate emissions by 40% compared to China V, and for heavy-duty diesel vehicles, nitrogen oxides and particulates are reduced by 60% compared to the China V phase.
I have always been concerned about environmental protection, and the core difference between China V and China VI lies in stricter emission standards. Compared to China V, China VI significantly reduces pollutant limits, such as carbon monoxide, nitrogen oxides, and particulate matter (PM) emissions, which can effectively reduce air pollution. In terms of implementation time, China V was promoted in 2017, while China VI was gradually rolled out starting in 2020, divided into two phases (a and b) for reinforcement. China VI also introduced the WLTC test procedure, which is closer to real driving conditions, avoiding the idealized issues of the NEDC test used in China V. Technically, China VI vehicles are often equipped with particulate filters and three-way catalytic converters to improve purification efficiency. Although the purchase cost may increase slightly, the long-term environmental benefits are substantial. In daily life, choosing China VI vehicles significantly helps alleviate urban smog and reduce the greenhouse effect. I believe promoting green technology is very important.
As a car owner with years of driving experience, the difference between National V and National VI is directly reflected in fuel consumption and vehicle condition. The National VI standard is stricter; for example, with enhanced emission control, some models may see a slight increase in fuel consumption but are overall more environmentally friendly. National V is the old standard from 2017, while National VI, introduced in 2020, has stronger restrictions on pollutants like carbon monoxide. In terms of maintenance, National VI vehicles equipped with particulate filters require regular regeneration and cleaning, unlike National V which is more hassle-free. However, from an environmental perspective, National VI vehicles emit cleaner exhaust with much less noticeable odor in the air. When choosing a car, I recommend prioritizing National VI for new purchases based on your budget to avoid potential driving restrictions.
In simple terms, the biggest differences between China V and China VI lie in technical parameters and testing methods. China VI has much lower emission limits, imposes stricter controls on hydrocarbons, and adopts the WLTC cycle instead of the NEDC used in China V, making it more realistic and reliable. The effect is significantly reduced pollution.
