
The China V emission standard was implemented in certain regions in phases, by area and stage starting from April 1, 2016, and was enforced nationwide from January 1, 2017. The emission control level of the China V standard is equivalent to the Euro 5 emission standard currently implemented in Europe. The European Union has been enforcing it since 2009, which imposes stricter limits on nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles emitted by motor vehicles. Here is some information about the China V emission standard: (1) The China Fifth Stage Motor Vehicle Pollutant Emission Standard, abbreviated as the "China V Standard". (2) Emission standards are primarily used for testing new vehicles, and cars sold on the market should comply with the emission requirements of the time.

I remember that China's National V emission standards were implemented gradually, mainly to control vehicle exhaust pollution and reduce harmful substances in the atmosphere. Key milestones: In 2013, Beijing took the lead in piloting the National V standard for light-duty vehicles, which drew nationwide attention. Then, the mandatory enforcement for heavy-duty vehicles began on July 1, 2017, while the nationwide implementation for light-duty vehicles was fully rolled out on January 1, 2018. This timeline reflected the accelerated implementation of environmental policies, as air pollution issues were prominent during that period, prompting the government to push automakers to upgrade their technologies. As an automotive enthusiast, I witnessed the transition period firsthand—many friends were concerned about vehicle registration issues due to the standard change when purchasing cars in 2017. After the full implementation in 2018, the stricter emission standards also paved the way for the later National VI standards.

As a car owner, I went through the implementation phase of China 5 emission standards when purchasing my vehicle. The nationwide mandatory enforcement for light-duty vehicles took effect on January 1, 2018. I bought my old car at the end of 2017, which still complied with China 4 standards, but once the policy was implemented, new models had to meet China 5 standards. This meant more environmentally friendly exhaust emissions, reducing particulate matter and nitrogen oxide pollution. At that time, the car sales market underwent significant changes, with fluctuations in used car prices because new cars had to meet the new standards starting in 2018. I think this period was quite good, helping China accelerate its green transformation. I also witnessed the upgrades from China 4 to China 5, such as improvements in engines and filtration systems. Overall, 2018 was a critical milestone that contributed to environmental improvements and adjustments in consumer behavior.

From a technical perspective, the China V emission standards began rolling out in mid-2017, with heavy-duty vehicles implementing them first in July, while light-duty vehicles nationwide followed in early 2018. Engine and exhaust systems had to be upgraded to reduce pollutant emissions. As a technician, I observed an increase in maintenance cases related to emission control module failures during that period, with some older vehicles requiring additional devices to meet the standards. The year 2018 marked a crucial milestone, signaling a new phase in emission control and laying groundwork for the subsequent China VI standards. In practical applications, these standards improved vehicle environmental performance, though with a slight increase in maintenance costs.


