What are the differences between China 4 and China 5 vehicles?

[LeEleanor]

Here are the specific differences between China 4 and China 5: 1. Sulfur content: The sulfur content limit for China 4 standard gasoline is 10mg; for China 5 standard gasoline, it is 50mg. 2. Emission limits: China 5 has stricter control on nitrogen oxides than China 4. Compared to China 4 emission standards, China 5 emission standards reduce nitrogen oxide (NOx) emissions by 28%, the total index of hydrocarbons and nitrogen oxides (HC+NOx) by 23%, and particulate matter (PM) concentration for diesel vehicles by 82%.

[Hadley]

The main difference between National 4 (China IV) and National 5 (China V) vehicles lies in the stringency of emission standards. National 5 imposes lower limits on pollutants, such as stricter emission thresholds for nitrogen oxides and particulate matter. As a result, National 5 vehicles incorporate more advanced technologies, often equipped with better catalytic converters and engine management systems. Having driven both National 4 and National 5 cars, I find that National 5 models accelerate more smoothly due to optimized engine tuning, which reduces carbon buildup issues. During maintenance, National 5 vehicles require higher-efficiency engine oil and regular checks on the emission system. In terms of cost, National 5 cars have a higher initial price, but they save on fuel expenses in the long run. Most importantly, policy impacts: in some major cities, National 4 vehicles may face restrictions on new registrations or entry into city centers, while National 5 vehicles enjoy more flexibility. From an environmental perspective, National 5 emissions are cleaner, reducing air pollution and benefiting long-term health. It's advisable to choose higher-standard vehicles when purchasing a car to avoid future inconveniences.

[LeMarcus]

China 5 vehicles are more environmentally friendly than China 4, with upgraded emission standards significantly reducing pollutants like CO and PM. As someone who pays attention to green transportation, I've noticed that China 5 engines are more efficiently designed, with more complete combustion, resulting in less black exhaust smoke while driving and a stronger sense of cleaner air. Economically speaking, China 5 vehicles are slightly more expensive, but maintenance isn't troublesome, and fuel consumption may even be lower, saving money on long-distance trips. Current policies are quite strict; cities like Beijing, Shanghai, Guangzhou, and Shenzhen restrict China 4 vehicles from being driven, but China 5 vehicles don't face these issues, making them more valuable in the used car market. The upgrade also brings peace of mind while driving, as emission tests are easier to pass without worrying about fines. In the long run, the planet benefits, and with the country pushing for China 6 standards, China 4 vehicles depreciate quickly, making it better to opt for the newer standards directly.

[Elizabeth]

The emission standards between China 4 and China 5 differ significantly, with China 5 imposing stricter limits that require upgrades to engines and exhaust treatment systems. As a car owner who transitioned from China 4 to China 5 after several years, the daily differences are noticeable: China 5 vehicles start faster and maintain steadier idling due to optimized control modules, and they pass emission tests in one go, saving time and hassle. In cities with stringent policies, China 4 vehicles face more driving restrictions, while China 5 vehicles can run freely without obstacles. Although China 5 vehicles have higher purchase costs, their maintenance is simpler. Considering future usage, opting for the higher standard is recommended.