Annex XIII

Annex III to Delegated Regulation (EU) 2017/654 is corrected as follows:

1. (1)

   point 3.1.2 is replaced by the following:

   ‘3.1.2.

   Engines from different engine families may be further combined into families based on the type of exhaust after-treatment system utilised or where no after-treatment is used, based upon the similarity of the technical characteristics of the emission control system. Engines of different bore and stroke, different configuration, different air management systems or different fuel systems may be considered equivalent in respect to emissions deterioration characteristics if the manufacturer provides data to the approval authority that there is a reasonable technical basis for such determination. In order to place engine families having similar technical specifications and installation for the exhaust after-treatment systems into the same engine after-treatment system family, the manufacturer shall provide data to the approval authority that demonstrates that the emissions reduction performance of such engines is similar.’;

2. (2)

   in point 3.4.1.3, the second sentence is replaced by the following:

   ‘The approval authority shall not refuse to approve maintenance requirements that are reasonable and technically necessary, including but not limited to those identified in point 3.4.1.4.’.