Article 13 2.

Following the entry into force of the procedures referred to in the first subparagraph of paragraph 4, type-approval authorities shall verify for those vehicle families for which they are responsible for the type-approval, on the basis of appropriate and representative vehicle samples, that the CO2 emission and fuel consumption values recorded in the certificates of conformity correspond to the CO2 emissions from, and fuel consumption of, vehicles in-service as determined in accordance with Regulation (EU) 2017/1151 while considering, inter alia, available data from on-board fuel and/or energy consumption monitoring devices.