What is the Difference Between National 5 and National 4 Vehicles?

[SanKate]

The differences between National 5 and National 4 are: 1. Different nitrogen oxide emission standards: The National 5 nitrogen oxide emission standard is 0.18 grams per kilometer; the National 4 nitrogen oxide emission standard is 0.25 grams per kilometer. 2. Different particulate matter concentration emission standards: The National 5 particulate matter concentration emission standard is 0.0045 grams per kilometer; the National 4 particulate matter concentration emission standard is 0.025 grams per kilometer. 3. Different non-methane hydrocarbon emission standards: The National 5 non-methane hydrocarbon emission standard is 0.23 grams per kilometer; the National 4 non-methane hydrocarbon emission standard is 0.3 grams per kilometer.

[OMaggie]

The main difference between China 5 (National 5) and China 4 (National 4) vehicles lies in their emission standards, with China 5 being the fifth stage and China 4 the fourth. China 5 imposes stricter limits on pollutants, significantly reducing emissions of nitrogen oxides (NOx) and particulate matter (PM). I recall that the NOx limit was lowered by approximately 30%, which helps reduce smog and respiratory issues in urban areas. China 5 vehicles are also often equipped with advanced filters like DPF (Diesel Particulate Filter), making exhaust treatment more efficient. From a usage perspective, China 5 was fully implemented in 2017, while China 4 was introduced in 2013, so newer China 5 vehicles benefit from more advanced technology. On automotive forums, I've seen discussions about older China 4 vehicles potentially facing restrictions in some major cities, which could limit driving freedom. The upgrade in standards primarily promotes environmental protection, making cars cleaner. I recommend prioritizing China 5 vehicles when choosing a car—it saves money and contributes to environmental protection, aligning well with the current trend toward new energy vehicles.

[LillianaMarie]

I think the difference between China 5 and China 4 vehicles significantly impacts the environment. The China 5 standard reduces more exhaust pollution, especially particulate matter, which greatly benefits air quality and health. For example, China 5 vehicles emit much lower PM2.5 compared to China 4, helping alleviate urban air pollution. As an environmentalist, I know this upgrade aids in combating climate change, and the government promotes it through regulations. In practice, purchasing a China 5 vehicle might cost slightly more, but it saves on maintenance and environmental costs in the long run. In some regions, China 4 vehicles can't even be registered, so when choosing a new car, I have to consider green transportation. Overall, this difference strengthens the concept of sustainable transportation, and I recommend everyone pay attention to emission standards to support ecology.

[LaBradley]

As a car owner, I have experienced the differences between China V and China IV vehicles. China V vehicles have better emission control, such as more efficient engines that produce fewer pollutants. On the other hand, China IV vehicles are restricted from entering city centers in some cities, making the traffic policies troublesome. When purchasing a car, China V models cost a few thousand more, but they may have slightly lower fuel consumption, saving me a bit on fuel costs. In the used car market, China IV vehicles depreciate faster, and I lost money when I traded mine in. There isn't much difference in refueling and maintenance, but in the long run, China V vehicles hold their value better. I must remind you to pay attention to regional regulations to avoid choosing the wrong car and affecting your travel.