How to read the national emission standards: Comprehensive analysis of automobile emission standards and identification methods
As environmental protection policies become increasingly stringent, automobile emission standards have become an important reference indicator for consumers when purchasing cars. Recently, "How to judge the national engine displacement" has become a hot topic on the Internet, especially in the new car launch and second-hand car trading scenarios. This article will provide a structured analysis of the methods for determining emission standards, as well as an inventory of popular automotive environmental topics across the Internet.
1. Top 5 recent popular automotive environmental topics in the country (last 10 days)
| Ranking | topic | amount of discussion | Related hot spots |
|---|---|---|---|
| 1 | National VIB emission standards are fully implemented | 285,000 | Price cuts on some models to clear inventory |
| 2 | New energy vehicle purchase tax exemption extended to 2027 | 193,000 | Sales of hybrid vehicles soar |
| 3 | Subsidy policy for the elimination of old motor vehicles | 156,000 | Used car emission standard fraud |
| 4 | Progress in the formulation of National VII standards | 121,000 | Controversy over car companies’ technical routes |
| 5 | National IV standards for non-road mobile machinery | 87,000 | Construction machinery replacement |
2. National engine displacement identification method
1.Vehicle Conformity Certificate Inquiry: The certificate clearly indicates the emission stage, and the authenticity can be verified by scanning the QR code on the certificate.
2.Environmental protection information included with the vehicle list: Necessary documents for vehicles manufactured after 2017, including key information on emission standards:
| file location | information field | Sample content |
|---|---|---|
| Page 3 | emission stage | GB18352.6-2016 Country VI |
| Page 5 | OBD system | Meet the requirements of National VIB |
3.Determination of the 10th digit of the VIN code: The vehicle identification number contains production year information, which can be calculated based on the standard implementation time:
| Production year code | Corresponding emission standards | Implementation time point |
|---|---|---|
| L(2020) | National VIA | 2020.7.1(light vehicle) |
| M(2021) | National VIB | 2021.7.1 (some models) |
3. Comparison of key parameters of various emission standards
| Standard | CO(mg/km) | NOx(mg/km) | PM(mg/km) | PN(person/km) |
|---|---|---|---|---|
| National Five | 1000 | 60 | 4.5 | 6×10¹¹ |
| National VIA | 700 | 60 | 4.5 | 6×10¹¹ |
| National VIB | 500 | 35 | 3.0 | 6×10¹¹ |
4. Guidelines for handling special situations
1.Parallel imported cars: You need to check the "Imported Motor Vehicles On-board Inspection Form". The Euro VI standard corresponds to the National VI and requires certification by a professional organization.
2.Vehicle registration transfer: Key regions such as Beijing, Tianjin and Hebei require National Five or above, and other regions can transfer to National Four. The specific process is:
| steps | Materials required | Things to note |
|---|---|---|
| 1 | Motor vehicle registration certificate | Check the emissions standards page |
| 2 | Environmental information verification | Log in to the website of the local Ecology and Environment Bureau |
5. Expert advice
1. Check with the Ministry of Ecology and Environment before purchasing a carMotor Vehicle Environmental Protection NetworkPublic information
2. Starting from 2023, newly registered vehicles must comply with National VI B. Second-hand vehicles must pay special attention to the authenticity of the test report.
3. Diesel vehicle users should pay extra attention to the status of the DPF device to avoid failing annual inspections.
Through the above structured data and methods, consumers can accurately judge vehicle emission standards and avoid usage risks caused by policy changes. It is recommended to make the optimal car purchase decision by combining local traffic restriction policies and subsidy standards.
check the details
check the details
en
