Are Gasoline Vehicles Classified by National Emission Standards?
2 Answers
Gasoline vehicles are classified by national emission standards. Here are the relevant details: 1. Classification Criteria: The classification of vehicle emission standards is denoted by Roman numerals, where I corresponds to National Standard 1, II to National Standard 2, III to National Standard 3, IV to National Standard 4, V to National Standard 5, and VI to National Standard 6. Currently, National Standard 6 is in effect, which is further divided into two phases: National Standard 6a and National Standard 6b. 2. National Standard 6: The National Standard 6 was uniformly implemented nationwide in 2020 and 2023. National Standard 6, also known as the 'China 6 Vehicle Emission Standard,' was established to enforce environmental protection laws, reduce and prevent vehicle exhaust pollution, and protect the ecological environment.
Yes, gasoline vehicles are indeed classified according to national emission standards, just like we grade cars to protect the environment. From my perspective, this national standard system has been in place for many years, primarily aimed at controlling vehicle exhaust pollution. It’s divided into several levels from National I to National VI, with National VI being the latest and most stringent. The earliest National I standard emerged around 2000, targeting pollutants like carbon monoxide and hydrocarbons with relatively low emission limits. However, the current National VI imposes much stricter controls on nitrogen oxides and particulate matter, reducing emission rates by over 90%. Each time the standard is upgraded, new vehicle technologies must keep up, such as adding exhaust treatment systems and advanced engine management. This directly impacts air quality, especially in big cities, where higher-standard cars are more environmentally friendly. I often help friends choose cars and recommend opting for National V or VI models—not only do they pollute less, but they also pass annual inspections more easily and retain better resale value. However, it’s important to note that older vehicles like National II or III may face driving restrictions in some cities, so always check the emission level before buying to avoid affecting daily use. Overall, this system is a good thing—making cars greener and the air cleaner.
