What are the automotive environmental protection standard levels?
2 Answers
Automotive environmental protection standard levels are divided into three categories: Euro I, Euro II, and Euro III. The European regulatory standards for vehicle emissions had already implemented several phases before 1992. Europe began implementing Euro I in 1992, Euro II in 1996, and Euro III in 2000. China's national standards for vehicle emissions differ from European standards. The national standards are formulated based on China's specific conditions, while European standards are commonly adopted by member states of the European Community. For vehicles that meet environmental protection standards, the government issues graded emission standard labels in two main colors: yellow and green. These labels are issued after reviewing the vehicle model and emission standards, with the purpose of facilitating energy-saving and emission-reduction inspections as well as regular environmental protection checks for vehicles.
I recently researched a lot of materials and learned that automotive environmental standards are emission regulations set by governments to reduce air pollution, divided into different levels. For example, Europe has Euro 1 to Euro 6, and China has National 1 to National 6, with higher numbers indicating stricter standards that require vehicles to emit fewer pollutants like carbon dioxide and nitrogen oxides. For instance, National 6b is stricter than 6a and requires more advanced emission control technologies. The new standards also introduce real-world driving tests to simulate actual driving conditions. This affects vehicle design, such as requiring the installation of DPF (Diesel Particulate Filters) to control particulate emissions. Consumers should pay attention to these standards when buying cars, as higher-level vehicles emit cleaner exhaust and pass annual inspections more easily. If more people use environmentally friendly vehicles, urban air quality can improve significantly, benefiting public health. However, upgrading standards may increase vehicle costs, and older models require frequent maintenance to comply.
