When was China 5 implemented?

[DiDylan]

China 5, the fifth-stage national motor vehicle emission standard, was implemented nationwide from January 1, 2017. Below is an introduction to motor vehicle emission standards: 1. From China I to China IV, each upgrade in the standard reduces single-vehicle pollution by 30% to 50%. 2. Motor vehicle pollutant emission standards are established to implement environmental protection laws, reduce and prevent vehicle exhaust pollution, protect the ecological environment, and ensure human health. 3. Compared to China IV standards, China 5 standards reduce harmful gas emissions such as nitrogen oxides by 43% for heavy-duty vehicles and by 25% for light-duty vehicles. Therefore, it not only significantly improves the environment but also benefits everyone's health.