What is the China National Emission Standard for VI?
4 Answers
VI refers to the China National VI Emission Standard. The key specifications of the China National VI Emission Standard include: 1. Carbon monoxide content limited to 500 milligrams per kilometer; 2. Particulate matter (PM) content capped at 3 milligrams; 3. Nitrogen oxides (NOx) restricted to 35 milligrams; 4. Non-methane hydrocarbons (NMHC) limited to 35 milligrams. The full name of China National VI is 'China's Sixth Stage Emission Standards for Light-Duty Vehicles', which regulates the emission limits of harmful gases such as carbon monoxide (CO), hydrocarbons (HC), nitrogen oxides (NOx), particulate matter (PM), and soot from vehicle exhaust. This standard is established to prevent environmental pollution caused by exhaust emissions from compression-ignition and gas-fueled spark-ignition engine vehicles, protect the ecological environment, and safeguard human health.
I've been repairing cars for over a decade and often get asked about China 6 emission standards. Actually, China 6 refers to the National Sixth Stage Emission Standards for Motor Vehicles, which comes in two phases: A and B. Phase A was introduced in 2019, while Phase B is stricter and will be fully implemented after 2023. Specific standards, such as the carbon monoxide emission limit, are much lower—dropping from 1000mg/km under China 5 to below 500mg for gasoline vehicles, with stricter controls on particulate matter. This is mainly in response to environmental policies aimed at reducing smog and health impacts. For car owners, checking the emission standard is simple: just look at the environmental compliance certificate or label when buying a car, or check the side of the license plate frame on used cars, which often indicates the emission standard. During maintenance, make sure to regularly inspect the exhaust system to avoid issues during annual inspections. Overall, China 6-compliant vehicles feature more technological updates, higher engine efficiency, and potentially better fuel economy.
Last year when I changed my car, I specifically researched what the China 6 emission standard means. Before purchasing, I compared models online and checked the new vehicle environmental information website to confirm it met China 6B. Since major cities now have strict traffic restrictions, driving a China 5 vehicle might face limitations. The salesperson showed me the certificate stating emission standard values, such as stricter nitrogen oxide limits to control exhaust pollution. I think this is great - the car has strong performance while being more environmentally friendly. The upgrade in emission standards has minimal impact on ordinary people, but it's crucial to check environmental certification documents when choosing a car to avoid being tricked into buying older models. Additionally, China 6 vehicles have improved catalyst systems, making maintenance easier without worrying about exhaust system failures. Overall, choosing a China 6 compliant car is definitely the right choice as it won't become obsolete in the future.
Emission standards are crucial for the planet, which is why I pay close attention to them. The China 6 emission standard has tightened the limits on pollutants, such as reducing nitrogen oxides that cause acid rain and lowering particulate matter to improve air pollution, directly protecting health. The policy promoting China 6 is a good thing as it encourages automakers to upgrade green technologies. As a car owner, supporting environmental initiatives by driving a China 6-compliant vehicle can be considered a contribution. Implementation is phased, and currently, China 6B is the main standard. For the average person, this means newer cars are cleaner, while older vehicles are gradually phased out. Daily driving should not overlook regular checks of emission control systems to ensure compliance.
