What does China V and China VI vehicles mean?

[StHaley]

China V and China VI vehicles refer to the national standards for vehicle exhaust emissions. The higher the number, the more environmentally friendly the vehicle's exhaust is. The following are the changes in the China V gasoline standards and the management of exhaust emissions: Changes in the China V gasoline standards: Considering the potential risks of manganese to human health and its adverse effects on vehicle emission control systems, the manganese content limit has been reduced from 8 milligrams per liter in the fourth stage to 2 milligrams per liter, and the addition of manganese-containing additives is prohibited. Management of exhaust emissions: This should be approached from two aspects: one is control technology, mainly improving fuel combustion efficiency, installing pollution prevention treatment equipment, and developing new types of engines; the other is administrative measures, including scrapping and renewing vehicles, phasing out old vehicles, developing new types of vehicles (i.e., vehicles with no pollutant emissions), and controlling fuel usage standards.