1.The environmental and propulsion unit performance test procedures shall be performed in accordance with the test requirements laid down in this Regulation.
2.The test procedures shall be carried out or witnessed by the approval authority or, if authorised by the approval authority, by the technical service. The manufacturer shall select a representative parent vehicle to demonstrate compliance of the environmental performance of the L-category vehicles to the satisfaction of the approval authority complying with the requirements of Annex XI.
3.The measurement methods and test results shall be reported to the approval authority in the test report format pursuant to Article 32(1) of Regulation (EU) No 168/2013.
4.The environmental performance type-approval regarding test types I, II, III, IV, V, VII and VIII shall extend to different vehicle variants, versions and propulsion types and families, provided that the vehicle version, propulsion or pollution-control system parameters specified in Annex XI are identical or remain within the prescribed and declared tolerances in that Annex.
5.Hybrid applications or applications equipped with a stop-start system shall be tested with the fuel-consuming engine running where specified in the test procedure.