The Difference Between China National Standard V and VI for Vehicles
3 Answers
The difference between National Standard V and VI lies in the emission standards, with National Standard VI being more stringent. The main differences between National Standard V and VI are as follows: Different Emission Limits: National Standard 6a serves as a transitional phase between National Standard V and VI. The emission limit requirements of National Standard VI are approximately 40% to 50% stricter than those of National Standard V. Different Prices: The additional costs incurred by automobile manufacturers in declaration, various tests, and production lead to significantly higher prices for National Standard VI vehicles compared to National Standard V vehicles. Although the vehicle license duration is 15 years for both, there are practical differences in actual usage.
The biggest difference between China 5 and China 6 lies in the more stringent emission controls. The China 6 standards are much stricter than China 5, with significantly lower limits for pollutants such as carbon monoxide and nitrogen oxides. For nitrogen oxides, the limit under China 6 is at most half of that under China 5, meaning fewer tailpipe emissions while driving. China 6 is also divided into Phase A and Phase B, with Phase B being even stricter, requiring new technologies like Diesel Particulate Filters (DPF) to purify exhaust gases. The implementation timelines differ as well: China 5 was rolled out nationwide in 2017, while China 6 was introduced in phases starting from 2020. From a general driving experience perspective, I feel that driving a China 6-compliant vehicle in urban areas results in cleaner air with less noticeable exhaust odor. However, maintenance might be slightly more expensive due to upgraded components, requiring more frequent oil changes or system cleanings. In the long run, choosing a China 6-compliant vehicle is more hassle-free, avoiding registration restrictions and helping reduce smog issues. It is recommended that vehicle owners check their environmental labels to confirm the vehicle's standard.
The main difference between China 5 and China 6 is the upgraded environmental protection level. The China 6 standard significantly tightens the upper limits for pollutant emissions, especially greatly reducing carbon monoxide and nitrogen oxides, which can notably decrease air pollution, improve urban air quality, and reduce the risk of respiratory diseases. Specifically, China 6 introduces real driving emissions testing, unlike China 5 which only checks in the lab, better reflecting actual driving emissions. Regionally, China 5 was uniformly implemented nationwide, while China 6 is being rolled out in phases, with major cities first adopting the stricter Phase B. Technologically, China 6 vehicles require advanced devices like selective catalytic reduction systems, with slightly higher maintenance part replacement costs. I've followed the policy changes - China 6 vehicles use cleaner fuel, which long-term can make the air fresher, suiting health-conscious owners. I recommend regular emissions testing to maintain vehicle efficiency.
