# Commission Regulation (EU) 2017/1151 of 1 June 2017 supplementing 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, amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) No 1230/2012 and repealing Commission Regulation (EC) No 692/2008 (Text with EEA relevance), Division 6.6.1


If the composition of the fuel used for the test differs from the composition that is assumed for the calculation of the normalised consumption, on the manufacturer's request a correction factor cf may be applied, using the following equation:
FCnorm=0,12120,538× cf×0,825× HC+0,429× CO+0,273× CO2The correction factor, cf, which may be applied, is determined using the following equation:
cf=0,825+ 0,0693× nactualwhere:
nactual is the actual H/C ratio of the fuel used.

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Source: https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/7/division/division/6./division/6.6./division/6.6.1. (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/7/division/division-6./division-6.6./division-6.6.1.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.