What is the Chinese equivalent of the Euro 6 emission standard?

[OLilah]

The environmental standard Euro VI is equivalent to China's National VI standard. Below are relevant details: 1. The National VI standard continues to follow the European standard framework but also incorporates advanced practices from the U.S. standards, such as regulations on evaporative emissions, refueling emissions, and onboard diagnostic systems. Currently, global automotive emission regulations are primarily divided into three major systems: European, American, and Japanese. China's vehicle emission standards have consistently adopted the European system. The Euro VI emission standard was introduced in 2014. Due to its high nitrogen oxide emission limits, this standard is considered a factor behind the diesel emission cheating scandals involving German automakers. 2. In terms of emission limits, the National VI A phase is slightly stricter than the Euro VI standard but more lenient than the U.S. Tier 3 standard. The National VI B phase limits are roughly equivalent to the fleet average limits set for 2020 under the U.S. Tier 3 standard. The National VI standard is currently one of the strictest emission standards in the world. 3. As mentioned earlier, global automotive emission regulations are primarily divided into European, American, and Japanese systems, with China consistently adopting the European framework. The Euro VI standard, introduced in 2014, is notable for its high nitrogen oxide limits, which contributed to the diesel emission cheating scandals involving German automakers.