# Commission Regulation (EU) No 582/2011 of 25 May 2011 implementing and amending Regulation (EC) No 595/2009 of the European Parliament and of the Council with respect to emissions from heavy duty vehicles (Euro VI) and amending Annexes I and III to Directive 2007/46/EC of the European Parliament and of the Council (Text with EEA relevance), Division 7.2.3.2: When the manufacturer requests to conduct a running-in procedure in accordance with point 7.2.3.1, it may be carried out on either of the following:

Extent: E+W+S+N.I.

(a)all the engines that are tested;
(b)the first engine tested, with the determination of an evolution coefficient as follows:
(i)the pollutant emissions shall be measured both on the newly manufactured engine and before the maximum of 125 hours set in point 7.2.3.1 on the first engine tested;
(ii)the evolution coefficient of the emissions between the two tests shall be calculated for each pollutant:
Emissions on second test/Emissions first test
The evolution coefficient may have a value less than one.
The subsequent test engines shall not be subjected to the running-in procedure, but their emissions when newly manufactured shall be modified by the evolution coefficient.
In this case, the values to be taken shall be the following:
(a)for the first engine, the values from the second test;
(b)for the other engines, the values when newly manufactured multiplied by the evolution coefficient.

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Source: https://www.legislation.gov.uk/eur/2011/582/annex/I/division/7/division/7.2/division/7.2.3.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-582/annex-I/division-7/division-7.2/division-7.2.3.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.