{
  "url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/8n3/division/division-2./division-2.3./division-2.3.2.",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/8n3/division/division-2./division-2.3./division-2.3.2..json",
  "legislation": "eur/2017/1151",
  "legislation_title": "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)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2017-1151",
  "path": "annex/Sub/8n3/division/division/2./division/2.3./division/2.3.2.",
  "kind": "division",
  "number": "2.3.2",
  "heading": "Determination of CO2 mass emission correction coefficient KCO2",
  "text": "For OVC-HEVs and NOVC-HEVs, the CO2 mass emission correction coefficient KCO2, determined by driving a set of charge-sustaining Type 1 tests, is defined by the following equation:\nKCO2=∑nCSn= 1ECDC,CS,n− ECDC,CS,avg×MCO2,CS,nb,n− MCO2,CS,nb,avg∑nCSn= 1ECDC,CS,n− ECDC,CS,avg2where:\nKCO2is the CO2 mass emission correction coefficient, (g/km)/(Wh/km);\nECDC,CS,nis the charge-sustaining electric energy consumption of test n based on the REESS depletion according to paragraph 2.3.1. of this Appendix, Wh/km;\nECDC,CS,avgis the arithmetic average of the charge-sustaining electric energy consumption of ncs tests based on the REESS depletion according to paragraph 2.3.1. of this Appendix, Wh/km;\nMCO2,CS,nb,nis the charge-sustaining CO2 mass emission of test n, not corrected for the energy balance, calculated according Table A8/5, step no. 2, g/km;\nMCO2,CS,nb,avgis the arithmetic average of the charge-sustaining CO2 mass emission of ncs tests based on the CO2 mass emission, not corrected for the energy balance, according to the equation below, g/km;\nnis the index number of the considered test;\nncsis the total number of tests;\nand:\nMCO2,CS,nb,avg=1nCS×∑ncsn= 1 MCO2,CS,nb,nThe CO2 mass emission correction coefficient shall be rounded to four significant figures. The statistical significance of the CO2 mass emission correction coefficient shall be evaluated by the approval authority.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/8n3/division/division/2./division/2.3./division/2.3.2.",
    "retrieved_at": "2026-11-01T14:44:48.753743+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}