How to distinguish between China V and China VI vehicle emission standards?
2 Answers
The China V emission standard is marked with "V", while the China VI emission standard is marked with "Ⅵ", both using Roman numerals. When purchasing a new car, the salesperson will provide a vehicle acceptance form, which includes 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 relevant information about China V and China VI: 1. The China VI standard's limit requirements are approximately 40% to 50% stricter than China V: The emissions under the China VI standard are significantly lower than those under China V. Simply improving engine technology as before to meet emission standards is unrealistic; comprehensive optimization is required to meet China VI requirements. 2. China VI adopts a fuel-neutral principle: This means that regardless of the fuel type used, the emission limits are the same. In contrast, during the China V phase, diesel and gasoline vehicles had different emission standards. 3. China VI introduces stricter compliance and supervision requirements: These include type testing and information disclosure, production consistency checks, new vehicle inspections, in-use vehicle compliance checks, etc., and simplifies the method for determining compliance. 4. The China VIa phase emission standards are essentially the same as China V: This merely adopts the strictest values from the China V emission requirements.
I've been into cars for several years and found that the key difference between China 5 and China 6 lies in the strictness of emission standards. China 6 is divided into two phases, a and b, with the nitrogen oxide limit nearly halved compared to the more lenient China 5. Daily differentiation is simple: check the environmental label number on the vehicle's nameplate or look up the VIN code on the official website—China 6 vehicles have codes with 'VI' in them. When buying a used car, pay attention to the production year; new cars after 2019 are mostly China 6, while those before are China 5. The impact is significant—China 6 vehicles are equipped with particulate filters, making them more environmentally friendly to drive, but they can clog without regular maintenance. I recommend keeping an eye on policies; in big cities, China 6 vehicles face no driving restrictions, whereas China 5 might be limited.
