What are the differences between National V and National VI vehicles?

[DelCassidy]

The differences between National V and National VI emission standards are as follows: Different emission standards: National VI emission standards are more than 30% stricter than National V. Excluding the influence of working conditions and testing, gasoline vehicles' carbon monoxide emissions are reduced by 50%, total hydrocarbons and non-methane hydrocarbons emissions are reduced by 50%, and nitrogen oxide emissions are reduced by 42%. Different implementation times: The National V standard was implemented nationwide on January 1, 2017. The National VI standard was implemented early in Beijing on January 1, 2019, and nationwide on July 1, 2020. Different principles: During the National V phase, diesel and gasoline vehicles had different emission standards, but National VI adopts a fuel-neutral principle, meaning the emission limits are the same regardless of the fuel type. Different issuing departments: The National V standard was issued by the Ministry of Environmental Protection, while the National VI standard was issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection, and Quarantine. Different letter representations: National V is represented by 'V,' while National VI is represented by 'VI.' Different monitoring requirements for plug-in hybrid electric vehicles: Compared to National V, National VI has improved monitoring requirements for plug-in hybrid electric vehicles, including energy storage systems, thermal management systems, brake regeneration, drive motors, generators, and other regulations. National V standard limits are as follows: Gasoline vehicles must not emit more than 1,000 milligrams of carbon monoxide per kilometer driven. Gasoline vehicles must not emit more than 68 milligrams of non-methane hydrocarbons per kilometer driven. Gasoline vehicles must not emit more than 60 milligrams of nitrogen oxides per kilometer driven. Gasoline vehicles must not emit more than 4.5 milligrams of PM (particulate matter) per kilometer driven. National VI has two standards: National VIa and National VIb, as follows: National VIa standard limits: Gasoline vehicles must not emit more than 700 milligrams of carbon monoxide per kilometer driven. Gasoline vehicles must not emit more than 68 milligrams of non-methane hydrocarbons per kilometer driven. Gasoline vehicles must not emit more than 60 milligrams of nitrogen oxides per kilometer driven. Gasoline vehicles must not emit more than 4.5 milligrams of PM (particulate matter) per kilometer driven. National VIb standard limits: Gasoline vehicles must not emit more than 500 milligrams of carbon monoxide per kilometer driven. Gasoline vehicles must not emit more than 35 milligrams of non-methane hydrocarbons per kilometer driven. Gasoline vehicles must not emit more than 35 milligrams of nitrogen oxides per kilometer driven. Gasoline vehicles must not emit more than 3 milligrams of PM (particulate matter) per kilometer driven. Affected by the National VI emission policy, although National V vehicles are not currently restricted from normal use, their resale value will be significantly impacted. For truck owners, if they purchase a truck on loan for hauling goods, the depreciation of the vehicle after paying off the loan is equivalent to the net profit during that period. A higher residual value means more profit for the owner. Therefore, from this perspective, National VI vehicles, with longer service life and more road rights, are more advantageous.

[OMarcus]

When I recently compared the differences between China 5 and China 6 emission standards while car shopping, I found that China 6 vehicles have stricter emission controls. For instance, the limits for nitrogen oxides and particulate matter are roughly halved, utilizing technologies like particulate filters, making daily driving emissions much cleaner. However, the price is slightly higher, and maintenance costs, such as replacing filters, are also a bit more expensive. China 5 cars depreciate faster in the used car market, especially in major cities like Beijing and Shanghai where they can no longer be registered, affecting convenience. I chose a China 6 vehicle because environmental policies are becoming increasingly stringent, and in the long run, it saves a lot of hassle. Fuel consumption remains largely unchanged, and highway performance is stable. Considering future trends, China 6 is more suitable for those pursuing sustainable driving.