
The main differences between National III, National IV, and National V vehicles are as follows: 1. Different emission limits: For light-duty vehicle emission limits, the country has established two levels of requirements this time, namely the 'National VIa' phase and the 'National VIb' phase. The 'National VIa' phase is essentially a transitional stage between 'National V' and 'National VI,' while the 'National VIb' phase represents the true 'National VI' emission standard. 2. Different prices: Compared to National V vehicles, National VI vehicles are equipped with additional components. Moreover, automobile manufacturers face extra costs from various tests for vehicle declaration and approval, as well as from production, leading to significantly higher prices for National VI vehicles compared to National V vehicles. 3. Different scrapping timelines: Although the country has abolished the limitation on scrapping periods, it will prohibit older vehicles from being driven on the road, which is equivalent to scrapping them.

When driving, I often get asked by friends how to distinguish between China III, China IV, and China V vehicles. I simply judge by the production year of the vehicle: China III emission standards were mainly implemented around 2008, China IV started around 2011, and China V was enforced from approximately 2017. You can check the environmental label or the markings on the vehicle's nameplate for specifics. My old car is a China III model, and it's always a hassle during the annual inspection. Nowadays, many cities restrict China III vehicles. Additionally, China V vehicles usually have more efficient exhaust systems, making them smoother to drive and with lower emissions. If you're unsure, you can scan the Vehicle Identification Number (VIN) using a mobile app to accurately check the emission standard version. When changing cars, I recommend choosing China V or newer models to avoid being affected by policy restrictions.

I've seen too many cars, and the most intuitive way to distinguish between National III, National IV, and National V standards is to check the green label issued by the environmental protection bureau or the emission standard on the vehicle registration certificate. Generally, National III vehicles were produced before 2008, National IV between 2011 and 2017, and National V after 2017. National V has made significant technological advancements, with more advanced engine designs and a substantial reduction in pollutant emissions. For example, National III vehicles often have black smoke issues, while National V rarely suffers from this problem. The differences between these standards not only affect annual inspections but also determine whether the vehicle can be driven in major cities, with National III vehicles now facing high risks of being phased out. If you're buying a used car, remember to check these details in advance to avoid future troubles.

As an environmentally conscious individual, I believe the key distinction between China III, China IV, and China V standards lies in their emission levels: China III has higher pollutant emissions, China IV shows improvement, while China V imposes stricter standards with over 40% reduction in pollutants. The differentiation method is straightforward: check the vehicle's manufacturing year – around 2008 for China III, gradually shifting to China IV after 2011, and China V from 2017 onwards. The environmental labels typically display "China III" or "China IV" markings for easy identification. These progressively upgraded standards have helped reduce urban smog, resulting in better air quality while driving. I recommend upgrading older vehicles as China V-compliant cars are cleaner and make greater contributions to environmental protection.


