What are the differences between National 4 and National 5 standards?
2 Answers
The differences between National 4 and National 5 standards are: 1. Different standards: National 4 emission standard is the fourth stage national motor vehicle pollutant emission standard; National 5 emission standard is the fifth stage national motor vehicle pollutant emission standard. 2. Different implementation times: National 4 was implemented nationwide from January 1, 2012; National 5 was implemented nationwide from January 1, 2017. 3. Different emissions: The main pollutants emitted by National 4 vehicles are HC (hydrocarbons), NOx (nitrogen oxides), CO (carbon monoxide), and PM (particulate matter); The emission control level of National 5 standard is equivalent to the fifth stage emission standard currently implemented in Europe, which imposes more stringent restrictions on motor vehicle emissions such as nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles.
As an ordinary car owner, I have driven both China 4 and China 5 emission standard vehicles, with the main difference lying in the emission standards. The China 5 standard is significantly stricter than China 4, requiring vehicles to emit fewer pollutants, such as substantially reduced carbon monoxide and nitrogen oxides, which results in a higher pass rate during vehicle inspections. The China 4 standard, implemented in 2013, was gradually replaced by China 5 after 2017, and now almost all new cars sold meet China 5 or higher standards. From a daily usage perspective, China 5 vehicles may require more frequent maintenance of the emission system, but they sometimes offer better fuel efficiency and provide a more environmentally friendly and comfortable driving experience. If you live in cities like Beijing or Shanghai, China 4 vehicles face restrictions on registration or relocation, making them more troublesome, so opting for a China 5 used car is more hassle-free. Overall, the upgrade is beneficial for us car owners, contributing to cleaner air, though the initial purchase cost might be slightly higher.
