# Commission Regulation (EC) No 692/2008 of 18 July 2008 implementing and amending Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information (Text with EEA relevance), Division 2.1.4

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

In Section 6 of Annex 9 of UN/ECE Regulation No 83, the sixth subparagraph shall be understood as follows:
A multiplicative exhaust emission deterioration factor shall be calculated for each pollutant as follows:
D.E.F. = Mi 2 Mi 1 At the request of a manufacturer, an additive exhaust emission deterioration factor shall be calculated for each pollutant as follows:
D.E.F. = Mi 2 − Mi 1

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Source: https://www.legislation.gov.uk/eur/2008/692/annex/VII/division/2/division/2.1/division/2.1.4 (the official version)
Page: https://openlegislation.uk/eu-regulation-2008-692/annex-VII/division-2/division-2.1/division-2.1.4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.