What does the National IV logo refer to?

[LaJoseph]

IV is a Roman numeral, corresponding to the Arabic numeral 4, so National IV is the National 4 standard. Here are the methods to check which national standard a car belongs to: 1. Check the back of the car's environmental protection label. 2. Estimate the car's emission standard based on its production year. 3. Take the vehicle registration certificate to the local DMV for inquiry. 4. Check the emission standard description on the vehicle qualification certificate. The national standard refers to the National Motor Vehicle Pollutant Emission Standards, which regulate the content of harmful gases such as carbon monoxide, hydrocarbons, nitrogen oxides, particulates, and carbon smoke emitted from vehicle exhaust.

[ColeFitz]

China IV refers to the fourth phase of China's national vehicle emission standards. I've noticed many friends asking about the meaning of this symbol when they see it. Actually, it's displayed on the vehicle nameplate, indicating that the vehicle meets the environmental requirements implemented around 2010. Why do we have these standards? Mainly to address exhaust pollution issues, such as reducing harmful substances in emissions like particulate matter and nitrogen oxides. Higher numbers represent stricter requirements - China I started in 1999, progressively upgrading to the current China VI. If you see the China IV mark when choosing a car, it means the vehicle was considered relatively environmentally friendly at that time, contributing to urban air quality improvement. However, most new cars now meet China V or China VI standards. Older standards are still usable, but some major cities like Beijing and Shanghai may impose urban access restrictions. Overall, it's a good system that allows driving while protecting the environment.

[Georgia]

I always think the China IV emblem is quite important. It doesn't just represent the China IV emission standard, but also signifies the reduced environmental impact of vehicles. Since its implementation around 2010, the country has used this classification system to control exhaust pollution, encouraging automakers to optimize technology and reduce particulate emissions. For example, when driving an older car, I pay attention to this emblem to understand its contribution to air quality improvement—the higher the emission standard, the better the air quality can become. Starting from smaller vehicles, China I is outdated and highly polluting, while China IV is considered moderate, and now we've reached China VI. It's especially crucial in the used car market—choosing a China IV-compliant vehicle is relatively reliable, at least meeting decent environmental thresholds. Although some regions may impose restrictions on high-emission vehicles after prolonged enforcement, it reminds everyone to prioritize the planet's health, which deserves praise.

[Billy]

You asked about China IV? Simply put, it refers to the China IV emission standard, which can be found on the vehicle manual or engine cover. It indicates that the car meets the national requirements for pollutant emissions without exceeding the limits, mainly implemented since 2010. As a car owner like me, I pay attention to this when choosing a car: higher emission standards help with passing annual inspections and saving fuel, while also having a smaller environmental impact. The relevant background is that the standards have been gradually upgraded from China I to China VI, with higher numbers indicating stricter regulations. China IV vehicles can still be driven now, but it's recommended to buy newer cars for better environmental protection. In short, checking this label can help assess the car's performance and sustainability.