What does China 6 refer to?

[HaleyLee]

China 6 refers to the National Sixth Stage Emission Standards for Motor Vehicle Pollutants. It includes the Limits and Measurement Methods for Emissions from Light-duty Vehicles (China 6) and the Limits and Measurement Methods for Emissions from Heavy-duty Diesel Vehicles (China 6). The purpose is to prevent pollution of the environment by exhaust emissions from compression-ignition and gas-fueled positive-ignition engine vehicles, protect the ecological environment, and safeguard human health. Under the China 6 standards, carbon monoxide emissions from gasoline vehicles are reduced by 50%, the emission limits for total hydrocarbons and non-methane hydrocarbons are decreased by 50%, and nitrogen oxide emission limits are reduced by 42%.

[SanManuel]

When buying a car, I paid special attention to the China 6 standard because it is now mandatory in many cities. China 6 is the abbreviation for the sixth stage of China's motor vehicle pollutant emission standards, which is much stricter than China 5. It mainly targets harmful substances in exhaust emissions, such as nitrogen oxides and carbon monoxide, with lower allowable limits. If you buy a new car that doesn’t meet China 6 standards, you may not be able to register it in some areas, and its resale value will depreciate faster. From an environmental perspective, it effectively reduces smog and air pollution, benefiting public health. Based on my experience, gasoline cars now come standard with GPF (Gasoline Particulate Filters), while diesel cars are equipped with SCR (Selective Catalytic Reduction) systems, improving fuel efficiency and reducing emissions. When choosing a car, prioritize those meeting the China 6b phase, as its emission limits are even stricter, leading to lower long-term costs. Overall, this standard pushes automakers to upgrade their technology, and consumers should be smart to avoid pitfalls.

[StNicole]

I've always been concerned about the environment, and I think the China VI standard is a positive step. It's an emission regulation established by China to strictly control pollutants emitted by vehicles, aiming to protect air quality and ecosystems. With pollutants like PM2.5 significantly restricted, big cities can have fewer smoggy days and lower asthma rates. Promoting green transportation, many electric and hybrid vehicles meet the standard. The government implemented China VI in phases a and b, with b having stricter requirements, which is expected to help mitigate climate change in the future. Ordinary people can contribute by choosing compliant vehicles and spreading awareness of green concepts.

[KaydenAnn]

The China VI standard has made significant technical improvements, with much tighter emission limits. It is divided into two phases, China VIa and VIb, using the new WLTC cycle for testing, which more accurately simulates real driving conditions. Both the engine and aftertreatment systems require upgrades, such as adding GPF or DPF to capture particulate matter. Regular vehicle owners should periodically inspect the three-way catalytic converter and OBD system to ensure compliant operation. This has minimal impact on performance while also reducing noise and maintenance costs.

[August]

When buying a car, I have to consider the impact of China 6, which has changed the market landscape. Newly launched models must meet the standards to be sold, otherwise they will face traffic restrictions. Used China 5 cars have depreciated because some cities ban older models. I went to the 4S store to check out promotional activities, and government subsidies are attractive. In the long run, it saves fuel and money, promoting innovation in the automotive industry. It is recommended to check the environmental protection list before purchasing a car.

[DiLeah]

China 6 is part of the evolution of emission standards, with each generation becoming stricter since China 1. China 6a was implemented in 2019, while 6b is even more stringent, such as reducing nitrogen oxides by 50%. Different regions are implementing it step by step, with Beijing and Shanghai taking the lead, followed by other areas. Regulations drive technological progress, and I predict future standards will be even stricter. Vehicle owners should perform timely maintenance to avoid fines.