What are the differences between China V and China VI vehicle emission standards?

[OAaliyah]

The differences between China V and China VI emission standards are as follows: Different emission standards: China VI standards are more than 30% stricter than China V. Excluding the influence of driving 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 China V standard was implemented nationwide on January 1, 2017. The China VI standard has been implemented since July 1, 2019. Different principles: During the China V phase, diesel and gasoline vehicles had different emission standards, but China VI adopts a fuel-neutral principle, meaning the emission limits are the same regardless of the fuel type. Different issuing authorities: The China V standard was issued by the Ministry of Environmental Protection. The China VI standard was issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine. Different letter representations: China V is represented by 'V', while China VI is represented by 'VI'. Different monitoring requirements for plug-in hybrid electric vehicles: Compared to China V, China 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. China 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. China VI has two standards: China VIa and China VIb. They are as follows: China 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. China 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 China VI emission policy, although China V vehicles are not currently restricted in normal use (no driving bans or license plate restrictions), their resale value is significantly impacted. For truck owners, if they purchase a truck on loan for cargo transport, after paying off the loan, the vehicle's depreciation is equivalent to the net profit earned during that period. A higher residual value means more profit for the owner. Therefore, from this perspective, China VI vehicles, which have a longer service life and more road rights, are more advantageous.

[LaEleanor]

Like many car enthusiasts, I'm quite interested in emission standards. China V and China VI are regulations set by China for new vehicle exhaust emissions, with China VI being much stricter than China V, primarily due to lower emission limits. China V sets upper limits for pollutants like carbon monoxide and hydrocarbons, but China VI pushes these limits even lower, and is divided into China VIa and VIb phases, with VIb being even more stringent. Technologically, China VI vehicles require better catalytic converters or particulate filters, such as gasoline vehicles needing GPFs to filter particulate matter, which wasn't required for China V. The testing methods also differ; China VI uses Real Driving Emission (RDE) tests instead of just laboratory data, better reflecting real-world driving conditions. This is a big plus for the environment, as China VI vehicles emit cleaner exhaust, reducing smog days and health impacts. However, automakers need to upgrade their technology, which might make new cars a bit more expensive. Overall, China VI is progress and worth supporting.