# 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 4.6


For the correction of CO2 emission, g/km, the Willans factors in Table A6.App2/3 shall be used.
Table A6.App2/3
Willans factors
Naturally aspirated
Pressure-charged
Positive ignition
Petrol (E10)
l/MJ
0,0756
0,0803
gCO2/MJ
174
184
CNG (G20)
m3/MJ
0,0719
0,0764
gCO2/MJ
129
137
LPG
l/MJ
0,0950
0,101
gCO2/MJ
155
164
E85
l/MJ
0,102
0,108
gCO2/MJ
169
179
Compression ignition
Diesel (B7)
l/MJ
0,0611
0,0611
gCO2/MJ
161
161

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Source: https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/6n2/division/division/4./division/4.6. (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/6n2/division/division-4./division-4.6.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.