Where to Check China V and China VI Emission Standards for Vehicles?

[LaAlexandra]

To determine whether a vehicle meets China V or China VI emission standards, you should refer to the environmental information on the vehicle's accompanying checklist. This document specifies the vehicle identification number (VIN) and the emission standard (e.g., China V or China VI). The China V emission standard is marked with the Roman numeral "V," while the China VI standard is denoted by "Ⅵ." Both China V and China VI are national standards regulating vehicle exhaust emissions. Vehicle emissions refer to harmful gases released from the exhaust, including CO (carbon monoxide), HC plus NOx (hydrocarbons and nitrogen oxides), and PM (particulate matter, soot), all of which are byproducts of engine combustion. The causes of these harmful gases vary. For example, CO is an intermediate product of incomplete fuel oxidation, occurring when oxygen is insufficient. Rich air-fuel mixtures and uneven mixture distribution can also increase CO emissions in the exhaust.