Article 3
This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union . This Regulation shall apply from 1 January 2026. Point (21) of Annex X shall apply as from 1 March 2025. Notwithstanding the second and the third paragraphs, from 12 March 2025, approval authorities shall not refuse to grant certification of CO 2 emissions and fuel consumption related properties of the components in accordance with Regulation (EU) 2017/2400, as amended by this Regulation. From 12 March 2025 Member States shall not prohibit registration, placing on the market and entry into service of a new vehicle, where the vehicle concerned complies with Regulation (EU) 2017/2400 and Regulation (EU) No 582/2011, as amended by this Regulation, if a manufacturer so requests.