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[기타] Letter: Advice on zero-emissions vehicle (ZEV) mandate and carbon dioxide regulations for new cars
Climate Change Committee
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1. Outline



This is a letter from Professor Piers Forster, Interim Chair of the CCC, to Minister Greenwood, Parliamentary Under-Secretary of State for Future of Roads.



The first part of this letter responds to a request for advice from the Government regarding a legislative amendment to address a discrepancy in emissions reference targets in Regulation (EU) 2019/631, and the policy intention of the Vehicle Emissions Trading Scheme (VETS) Orders 2023 and 2024. We are also taking the opportunity to comment more broadly on the zero-emission vehicle policy changes announced by the Government in April 2025.



2. Key messages




  • The Committee agrees that the proposed legislative amendment to allow either UK or EU reference data in calculating the baseline for manufacturer-specific emissions targets is necessary, in order to clarify compliance with the zero-emission vehicle (ZEV) mandate.




  • The Committee welcomes the decision to reinstate the 2030 phase-out date for new petrol and diesel cars. This transition is expected to deliver much of the emissions reduction required to meet the UK’s 2030 Nationally Determined Contribution, so clear signals and supportive regulation are essential.




  • Overall, we view the changes to the flexibilities of the ZEV mandate as pragmatic. However, we are concerned that the difference between the plug-in hybrid vehicle (PHEV) utility factors and real-world values, when combined with the expanded and extended ability to convert non-ZEV emissions improvements into ZEV credits, could encourage a greater role for hybrid vehicles and a reduction in emissions savings.
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