How to Check if a Car is China 5 or China 6 Emission Standard?
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To distinguish between China 5 and China 6 emission standards, check the emission standard letters on the rear of the car. China 5 is denoted by 'V,' while China 6 is denoted by 'VI.' The differences between the two are as follows: Emission Standards: China 6 standards are more than 30% stricter than China 5. Excluding the influence of driving conditions and testing, gasoline vehicles under China 6 must reduce carbon monoxide emissions by 50%, total hydrocarbons and non-methane hydrocarbons by 50%, and nitrogen oxide emissions by 42%. Implementation Time: China 5 standards were implemented nationwide on January 1, 2017. China 6 standards were implemented on July 1, 2019. Principles: Under China 5, diesel and gasoline vehicles had different emission standards. However, China 6 adopts a fuel-neutral principle, meaning the same emission limits apply regardless of fuel type. Issuing Authorities: China 5 standards were issued by the Ministry of Environmental Protection. China 6 standards were jointly issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection, and Quarantine. Letter Representation: China 5 is represented by 'V,' while China 6 is represented by 'VI.' Monitoring Requirements for Plug-in Hybrid Electric Vehicles (PHEVs): Compared to China 5, China 6 enhances monitoring requirements for PHEVs, including energy storage systems, thermal management systems, regenerative braking, drive motors, generators, and other regulatory aspects. China 5 Emission Limits: Gasoline vehicles must not exceed 1,000 mg/km of carbon monoxide emissions. Non-methane hydrocarbons must not exceed 68 mg/km. Nitrogen oxides must not exceed 60 mg/km. PM (particulate matter) must not exceed 4.5 mg/km. China 6 has two sub-standards: China 6a and China 6b. Details are as follows: China 6a Emission Limits: Gasoline vehicles must not exceed 700 mg/km of carbon monoxide emissions. Non-methane hydrocarbons must not exceed 68 mg/km. Nitrogen oxides must not exceed 60 mg/km. PM must not exceed 4.5 mg/km. China 6b Emission Limits: Gasoline vehicles must not exceed 500 mg/km of carbon monoxide emissions. Non-methane hydrocarbons must not exceed 35 mg/km. Nitrogen oxides must not exceed 35 mg/km. PM must not exceed 3 mg/km. Impacted by China 6 emission policies, although China 5 vehicles are not currently restricted in usage (no driving bans or plate restrictions), their resale value is significantly affected. For car owners, if purchasing a truck for freight via a loan, the depreciation after repaying the loan directly impacts net profits. Higher residual value means greater earnings. Therefore, from this perspective, China 6 vehicles—with longer usability and more road privileges—offer greater advantages.
