How to Distinguish Between China 5 and China 6 Emission Standards When Buying a Car?

[EmmettDella]

The China 5 emission standard is marked with a "V", while the China 6 emission standard is marked with a "Ⅵ", both using Roman numerals. When purchasing a new car, the salesperson will provide a vehicle acceptance form, which includes details such as the model, color, emission standard, engine number, and chassis number. For used cars, you can check the vehicle's full model number on the environmental protection website. Below is an introduction to China 5 and China 6: 1. China 5 (Ⅴ) Emission Standard: "Limits and Measurement Methods for Emissions from Light-duty Vehicles" was announced by the Ministry of Environmental Protection on September 17, 2013. Starting from January 1, 2018, all motor vehicles nationwide fully implemented the China 5 emission standard. 2. The China 6a phase emission standard is essentially the same as "China 5", only adopting the strictest values from the "China 5" emission requirements. Compared to China 5, the China 6 standard reduces nitrogen oxides by 77%, particulate matter by 67%, introduces a limit requirement for particle number (PN), and tightens the durability requirements for emission control devices and the related requirements for On-Board Diagnostics (OBD).