What does vi correspond to in terms of national emission standards?
3 Answers
vi corresponds to China 6. The term 'China X' refers to the national motor vehicle pollutant emission standards, with the classification denoted by Roman numerals: i corresponds to China 1, ii to China 2, iii to China 3, iv to China 4, v to China 5, and vi to China 6. Currently, China 6 is in effect, which is divided into two phases: China 6a and China 6b. Methods to check the emission standard of a vehicle include: 1. Look at the vehicle's environmental protection label, which has a clear mark on the back; 2. Visit the website of the Motor Vehicle Emission Pollution Supervision and Management Center for inquiry; 3. Take the vehicle registration certificate to the local vehicle management office for inquiry; 4. Check the vehicle's factory certificate; 5. Make a rough estimation based on the year the vehicle was registered.
I usually pay close attention to automotive environmental protection, and this question is actually quite common. 'vi' refers to the Roman numeral six, which corresponds to the Euro 6 standard in European vehicle emission regulations, roughly equivalent to China's National VI emission standard. Why is that? Because global emission standards are converging, both Euro 6 and National VI impose strict limits on nitrogen oxide and particulate emissions to reduce pollution and improve air quality. When I choose a car, I prioritize National VI models—they offer more flexibility under urban traffic restrictions and feature more advanced engine technology with cleaner fuel combustion. When buying used cars, be cautious: European imports marked 'vi' must be checked for National VI compliance to avoid annual inspection issues or road restrictions. Understanding these details helps average car owners save money and avoid hassles. Implemented since 2019, National VI has boosted new energy vehicle development, which I believe aligns well with green mobility trends. In short, knowing that 'vi' corresponds to National VI helps you make environmentally friendly and cost-effective decisions when purchasing a car.
As a car enthusiast, I'm very familiar with emission standards. The 'vi' designation represents the Euro 6 emission level, which is essentially equivalent to China's National VI standard. Both set stringent limits on exhaust emissions with the goal of reducing air pollutants like CO2 emissions. International automakers often need to comply with both standards when developing new vehicles; for example, some models labeled as 'vi' in Europe are rebadged as National VI when entering the Chinese market. From my frequent visits to auto shows, I've noticed that vehicles meeting higher emission standards employ more environmentally friendly technologies. National VI-compliant cars can save about 20% in fuel consumption and reduce long-term maintenance costs. Consumers purchasing used European cars must verify the National VI equivalence of the 'vi' label to avoid driving restrictions or registration issues. With continuous upgrades in environmental regulations, future requirements like National VI Phase b will become even stricter, driving industry progress. I recommend supporting such vehicles.
