What does China National 5 vehicle emission standard mean?
2 Answers
China National 5 vehicle emission standard refers to the regulations on vehicle exhaust emissions. It specifies the permissible levels of harmful gases emitted from vehicle exhaust, such as carbon monoxide, PM (particulate matter), and soot. A higher number in the standard indicates more environmentally friendly vehicle emissions. The China National 6 standard is an upgrade from National 5, imposing stricter limits on pollutant emissions. Compared to National 5, under National 6, the carbon monoxide emissions from gasoline vehicles are reduced by 50%, the total hydrocarbons and non-methane hydrocarbon emission limits are lowered by 50%, and the nitrogen oxide emission limits are tightened by 42%, excluding the influence of driving conditions and testing.
The China 5 standard refers to our country's fifth-phase vehicle emission regulations. Simply put, it requires new cars to emit fewer exhaust gases to be sold, mainly targeting harmful substances like carbon monoxide and nitrogen oxides. I read in automotive magazines that China 5 was implemented in 2017 and is much stricter than the previous China 4 standard – for example, it significantly lowered the carbon monoxide limits in exhaust. The core purpose of this standard is to improve air quality and reduce smog issues. As a car owner, I've noticed that China 5-compliant vehicles may have slightly better fuel efficiency and are more environmentally friendly to drive, but maintenance requires genuine parts to avoid affecting the emission system. Overall, China 5 has significantly impacted the entire automotive industry, pushing manufacturers to develop cleaner technologies.
