
China National V, the fifth stage of the national motor vehicle emission standards, was implemented nationwide starting from January 1, 2017. The emission control level of the National V standard is equivalent to the fifth stage emission standard implemented in Europe. The European Union has been enforcing it since 2009, with stricter limits on motor vehicle emissions such as nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles compared to the National IV standard. Relevant information is as follows: 1. Motor vehicle pollutant emission standards are established to implement environmental protection laws, reduce and prevent pollution from vehicle exhaust, protect the ecological environment, and ensure human health. 2. Compared to the National IV standard, the National V standard reduces harmful gas emissions such as nitrogen oxides from heavy-duty vehicles by 43%, and reduces harmful gas emissions such as nitrogen oxides from new standard light-duty vehicles by 25%. Therefore, it not only significantly improves the environment but also benefits everyone's health.

I remember the China 5 emission standards weren't implemented uniformly nationwide. They were gradually rolled out starting from early 2017. From New Year's Day that year, all newly produced light gasoline vehicles nationwide were required to meet China 5 standards. However, cities like Beijing and Shanghai that prioritize environmental protection moved faster, implementing them ahead of schedule in early 2016. The latest were those heavy-duty diesel vehicles, which weren't uniformly implemented nationwide until July 2017. So it depends on the vehicle type - for passenger cars, they were basically fully implemented nationwide in 2017. Most gasoline vehicles on the road today with production dates after 2017 are at least China 5 compliant.

This topic is often discussed in our driver groups. The nationwide implementation of China V standards varies by vehicle type and region. For light-duty gasoline vehicles, the mandatory national implementation date was January 1, 2017, but in reality, cities like Beijing and Shanghai started enforcing it as early as 2016. Heavy-duty diesel vehicles were required to meet the standards half a year later, with nationwide compliance mandated from July 1, 2017. Nowadays, some truck drivers still need to pay attention to production dates when purchasing vehicles, and cross-regional transfers require checking local enforcement timelines. If you want to check which emission standard your vehicle meets, the most straightforward way is to look at the registration date on the vehicle license - gasoline vehicles registered after 2017 are mostly China V compliant.

Those who have paid attention to automotive environmental protection know that 2017 was a critical time point for China 5 standards. From January 1st, newly produced and sold light gasoline vehicles were mandated to comply with China 5, but heavy-duty diesel vehicles were given a six-month buffer period, with enforcement starting in July. There's an easily overlooked detail here—regional implementation varies. The Yangtze River Delta and Pearl River Delta regions had stricter requirements than the national standards. For example, Shanghai implemented the standards nine months ahead of the national schedule on April 1, 2016. Currently, special attention is needed for vehicles being relocated across provinces, as China 5 standards were fully implemented nationwide in 2017.


