When will Ningbo implement the National 6 policy?
3 Answers
Ningbo officially implemented the National 6 standard on July 1, 2019. The following is extended information about National 6: Introduction: The National Sixth Stage Motor Vehicle Pollutant Emission Standards refer to the standards formulated to implement the "Environmental Protection Law of the People's Republic of China" and the "Air Pollution Prevention and Control Law of the People's Republic of China", prevent pollution of the environment by exhaust emissions from compression-ignition and gas-fueled spark-ignition engine vehicles, protect the ecological environment, and safeguard human health. It includes two parts: "Limits and Measurement Methods for Emissions from Light-Duty Vehicles (China Sixth Stage)" and "Limits and Measurement Methods for Emissions from Heavy-Duty Diesel Vehicles (China Sixth Stage)". Implementation Scope: Currently, China has implemented the National 6a policy nationwide.
I remember in July 2019 when I was handling business at the DMV, the staff clearly stated that the China 6a emission standard for light-duty vehicles would be uniformly implemented nationwide, and Ningbo would naturally follow suit. At that time, many 4S stores were urgently clearing out China 5 vehicles, and I even helped a friend grab a discounted car. By July 2023, it was upgraded to the China 6b phase, with even the particulate matter emission detectors being replaced with new equipment. Now, transferring ownership of China 5 vehicles in Ningbo's urban area is particularly troublesome, especially for diesel vehicles, as many inspection stations refuse to accept them. Friends looking to buy used cars must carefully check the emission standard on the vehicle license. Last year, my neighbor had to make three wasted trips to the DMV because of this issue.
From the perspective of a vehicle engineer, Ningbo implemented China 6 standards in three phases: in July 2019, all gasoline-powered small vehicles (sedans/SUVs, etc.) first adopted China 6a; in July 2020, it covered diesel-powered light-duty vehicles; heavy-duty vehicles were not fully compliant until July 2021. The most critical point is that after the nationwide switch to China 6b in July last year, all OBD readers at inspection stations were upgraded. Our company's laboratory data shows that under the new standards, the particulate emission limits for vehicles are 90% lower than those of China 5, and the catalytic converters must use precious metal coatings to meet the standards, which is also one of the reasons for the recent increase in car maintenance costs.
