What are the differences between China 6 and China 5 vehicle emission standards?
2 Answers
Here are the differences between China 6 and China 5 vehicle emission standards: 1. Different emission limits. China 6a is a transitional phase between China 5 and China 6, while China 6b represents the true China 6 emission standard. 2. Price differences. China 6 vehicles require additional equipment installation compared to China 5, leading to extra costs for automakers in vehicle certification, various tests, and production, resulting in higher prices for China 6 vehicles. 3. Different retirement timelines. For example: In January 2019, both China 5 and China 6 vehicles had 15-year validity on their licenses, but actual usage differs. Taking implemented standards as an example, while both 2010 China 3 trucks and 2010 China 4 trucks can operate in Beijing, many cities have imposed restrictions, effectively rendering many older vehicles obsolete. Thus, even for vehicles of the same year, their operational lifespans may differ.
The main difference between China 6 and China 5 emission standards lies in their stringency, with China 6 being significantly stricter than China 5. For instance, the limits for harmful substances like nitrogen oxides and carbon monoxide are nearly halved. China 6 also requires that vehicles' emissions must not exceed standards during actual on-road driving, unlike China 5, which only tests in laboratory conditions. China 6 is further divided into Phase a and Phase b, with Phase b being the most challenging. Automakers need to adopt new technologies like particulate filters, which increases manufacturing costs but is more environmentally friendly in the long run. As someone who frequently helps friends with car purchases, I've noticed that China 6-compliant vehicles contribute to cleaner air in cities and help control smog. However, they may come with a slightly higher price tag and more complex maintenance. I recommend prioritizing China 6-compliant vehicles when upgrading, especially in major cities with strict policies, as China 5 vehicles may face driving restrictions or faster depreciation. Opting for China 6b models ensures compliance with the latest standards.
