In end of January, 2025, the Ministry of Ecology and Environment (MEE) issued the draft of amendment for national mandatory standard GB 18352.6-2016 Limits and measurement methods for emissions from light-duty vehicles (CHINA 6) to call for public comments. The call-for-comment period ended on February 28, 2025.
The plan to formulate an amendment list for GB 18352.6-2016 is assigned by MEE in its working document named Notice on the implementation of the National Ecological and Environmental Standards Project in 2024.
China VI has come into force since July 1, 2020, and several issues or loopholes appears along the 4-year implementation until today. In the meantime, the development of new technologies and new energy vehicles and special models arises, and calls for an optimization in the existing standard GB 18352.6-2016.
The main changes that are stipulated in the draft of the Amendment List include:
- Optimize or add relevant definitions.
- Strengthen requirements for sealing up test sample vehicles.
- Add stipulations on vehicle CAL ID and CVN data filing.
- Supplement and improve the expanded requirements for type inspection and consistency determination of hybrid electric vehicles.
- Clarify discharge warranty failure rate reporting requirements.
- Supplement emission test methods and relevant regulations for three-axle six-wheeled-drive vehicles.
- Further standardize RDE supervision and inspection requirements, and strengthen PEMS test equipment management and control.
- The criterion of Type I test exceeding standard in pollutant emission test of refueling process
- Added driving mode requirements for test vehicles
Foreign stakeholders are suggested to notice that, once the Amendment List is implemented, relevant vehicle manufacturers will need to upgrade their testing equipment, strengthen software management and data filing, which is very likely to result in an increase of compliance costs in the short term. Such measures in the Amendment List will stimulate relevant manufacturers to innovate in technology, especially in the field of electronic control systems and emission strategy optimization.
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