What is the difference between China VI-B and China VI?

[AnastasiaFitz]

The differences between China VI-B and China VI are: 1. Difference one: The implementation times of China VI-B and China VI are different. China VI-A was mandatorily enforced for light-duty vehicles starting from July 1, 2020, while China VI-B will be mandatorily enforced from July 1, 2023. 2. Difference two: China VI-A is a transitional phase from China V to China VI, whereas China VI-B, coming three years after China VI-A, is the formal phase. 3. Difference three: China VI-B is 29% stricter than China VI-A in terms of carbon monoxide emission limits, and 50% stricter in hydrocarbon emissions. Additional information: All the limits of China VI-B represent a new step up from those of China VI-A.

[DeKatherine]

As an experienced car driver sharing insights, the differences between China 5 and China 6 standards mainly lie in registration and practicality. Having driven a China 5 car for ten years, I noticed that in big cities like Beijing and Shanghai, older China 5 cars face restrictions, requiring extra fees or penalties, while China 6 cars don't have this issue. In terms of performance, China 6 cars respond a bit faster and have slightly lower fuel consumption by about 0.5L/100km, but they cost a few thousand yuan more when purchasing. For maintenance parts, China 5 cars are cheaper and easier to replace, whereas China 6 cars can incur high repair costs if the exhaust system fails. Considering future resale, China 6 cars hold their value better, selling faster and at higher prices. I recommend choosing China 6 directly for areas with strict city policies, while China 5 offers better cost-performance in rural areas or small towns. Personally, I think it's wiser to plan for long-term car use rather than just focusing on the price.

[SawyerRose]

I believe the key differences between China 5 and China 6 standards lie in emission requirements and daily impacts. As China's newer standard, China 6 imposes significantly stricter emission regulations, with nitrogen oxide and particulate limits reduced by over 40%. While this directly increases vehicle prices, the environmental benefits are substantial. As someone who frequently assists friends with car selection, I've observed that China 6-compliant new vehicles became mainstream from 2020 onward—slightly more expensive than China 5 models, though government subsidies may be available. During registration and ownership transfers, China 5 vehicles face greater regional restrictions, particularly struggling with used car registration in environmentally prioritized cities. From a purchasing perspective, China 6 vehicles maintain higher resale value and sell faster, while China 5 models offer better affordability and cheaper repairs. Budget-conscious buyers may find China 5 more cost-effective, whereas those prioritizing long-term environmental considerations should opt for China 6. This transition has also driven automakers to upgrade technologies and develop cleaner engines.

[DelClayton]

I think the core difference between China 5 and China 6 lies in the technical requirements. The China 6 standard introduces advanced exhaust treatment technologies such as particulate filters and upgraded OBD systems, with refined emission control, significantly reducing pollution and fewer faults compared to China 5. From a maintenance perspective, China 6 components are more complex and costly to replace but offer better durability, as long as regular maintenance is performed. For repairs, China 5 parts are cheaper and easier to find but have a shorter lifespan. I suggest car owners learn some basic knowledge to troubleshoot and avoid unnecessary expenses—it's practical and worry-free. In the long run, making a reasonable choice protects the vehicle and benefits the environment.