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What is the difference between National IV and National V vehicles?

4 Answers
RemingtonMarie
07/29/25 12:57am
The differences between National IV and National V vehicles are: 1. Different emission standards: National IV is the National Fourth Stage Motor Vehicle Pollutant Emission Standard; National V is the National Fifth Stage Motor Vehicle Pollutant Emission Standard. 2. Different emission pollutants: National IV emission pollutants mainly include hydrocarbons, nitrogen oxides, carbon monoxide, and particulate matter; National V emission pollutants mainly include nitrogen oxides, hydrocarbons, carbon monoxide, and suspended particles. Methods to determine whether a vehicle is National IV or National V: 1. Check the original and duplicate copies of the environmental inspection compliance label; 2. Log in to the Motor Vehicle Environmental Protection Website and enter the vehicle model and engine model in the New Vehicle Compliance Query System to check.
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LeSabrina
08/12/25 10:37am
I have always been concerned about environmental issues. The biggest difference between National IV and National V vehicles lies in pollutant emissions. For example, the National V standard strictly limits the emissions of nitrogen oxides and particulate matter, which are nearly 30% lower than the National IV requirements. This means National V vehicles contribute more significantly to improving air quality. From a practical perspective, National V vehicles often employ advanced technologies such as SCR urea injection systems to purify exhaust, reducing black smoke and harmful gas emissions, resulting in cleaner air during city driving, albeit with slightly higher maintenance costs. Another critical point is the policy in major cities, where many places restrict the registration or transfer of National IV vehicles, causing a sharp drop in their resale value. Therefore, from a long-term perspective, purchasing National V or newer vehicles is more cost-effective and environmentally friendly. Maintenance for National V vehicles might be more complex, but overall, it benefits the healthy development of the community.
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AndrewRose
10/01/25 8:21am
As a car enthusiast, I've personally researched the differences between China IV and China V emission technologies. The key upgrades in China V lie in the engine and after-treatment systems, such as the addition of a Diesel Particulate Filter (DPF) to reduce soot emissions, whereas China IV systems are simpler and more prone to malfunctions. In actual driving, the vehicle response is slightly smoother, but fuel consumption can be a bit higher. For average car owners, China V vehicles offer more freedom in restricted zones, avoiding future policy constraints. Additionally, emission ratings affect insurance costs, with China V vehicles typically having lower premiums, making them more economical overall. In summary, technological upgrades are a good choice for protecting engine lifespan, but budget considerations should account for replacement part costs.
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Gama
11/15/25 3:20am
For ordinary drivers like me, the main differences between China IV and China V standards are in daily restrictions and simple maintenance. China V vehicles can be registered and licensed in more places without obstacles, especially in big cities, while China IV vehicles may be prohibited from ownership transfers and can only be driven in other areas, which is inconvenient. In terms of emissions, China V has lower limits for pollutants like CO and HC, but the driving experience is not much different. Practical tip: when looking at used car prices, China V vehicles hold their value better and require similar maintenance with less hassle. If you want to save money, it's advisable to check local traffic restriction policies to avoid unexpected troubles with China IV vehicles. Overall, choosing a China V vehicle is a more stable and long-term option.
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