What is the difference between China 5 and China 6?
4 Answers
The differences between China 5 and China 6 are as follows: 1. Different carbon monoxide emissions: China 5 has a carbon monoxide emission of 1,000 milligrams; China 6 has a carbon monoxide emission of 700 milligrams. 2. Different emission limits: The emission limit for China 5 is 0.0045 grams per kilometer; for China 6, it is 0.25 grams per kilometer. 3. Different issuing authorities: The China 5 standard was issued by the Ministry of Environmental Protection; the China 6 standard was issued by the Ministry of Environmental Protection and the General Administration of Quality Supervision, Inspection and Quarantine. 4. Different letter representations: China 5 is represented by the letter V; China 6 is represented by the letters VI.
The main difference between China 5 and China 6 lies in the environmental standards, with China 6 being stricter. For example, the emission limits are lower, and pollutants like carbon monoxide and nitrogen oxides are reduced by nearly 30%, which is crucial for urban air quality, reducing smog and health issues. In big cities like Beijing, China 6 can effectively reduce the generation of PM2.5, protecting the respiratory system, especially benefiting children and the elderly. Additionally, China 6 requires vehicles to be tested under real driving conditions, unlike China 5 which was only tested in laboratories, making it more aligned with real-life scenarios. To promote green development, China began implementing China 6 in 2020, while China 5 was introduced in 2017. The new standard pushes automakers to upgrade their technology. In the long run, this is beneficial for environmental improvement, but for ordinary people, it's important to check whether a car meets China 6 standards when purchasing, otherwise, they might face driving restrictions in stricter regions. Also, pay more attention to exhaust pipe maintenance during regular servicing to avoid fines for exceeding standards.
I think the difference between China 6 and China 5 is more pronounced in the used car market. China 5 vehicles are cheaper now, while China 6 cars have higher resale value because purchasing a China 5 vehicle may face restrictions in cities with license plate quotas under the new policies. When I changed my car last year, I opted for a China 6 SUV. The driving experience isn't significantly different, but the emission control is better. The China 6 standard also introduced remote monitoring capabilities, making it easier for dealerships to diagnose issues remotely. The lower pollutant limits mean vehicles might be more expensive, and maintenance could be more complex, with components like oxygen sensors or catalytic converters prone to issues. From an economic perspective, China 6 vehicles have higher initial costs but save on repair expenses and environmental fines in the long run. Even new energy vehicles are affected, as China 6 has accelerated the development of hybrids and pure electric vehicles. Always check the emission label when buying a car to avoid future hassles.
From a repair perspective, the China 6 engines have undergone significant modifications with upgraded emission systems. For instance, the three-way catalytic converter is more efficient, capable of converting 30% more pollutants, requiring specialized replacement parts during repairs - turning simple jobs into complex ones. China 6 also introduced RDE (Real Driving Emissions) testing, which monitors data during actual road driving instead of simulated tests like China 5. Repairing older China 5 vehicles may be cheaper, but newer China 6 models experience fewer faults with higher component durability. Maintenance intervals remain unchanged, and daily driving performance stays smooth.
