{
  "url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/8n1/division/division-4./division-4.5./division-4.5.1.",
  "json_url": "https://openlegislation.uk/eu-regulation-2017-1151/annex-Sub/8n1/division/division-4./division-4.5./division-4.5.1..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/8n1/division/division/4./division/4.5./division/4.5.1.",
  "kind": "division",
  "number": "4.5.1",
  "heading": "Interpolation range for NOVC-HEVs and OVC-HEVs",
  "text": "The interpolation method shall only be used if the difference in charge-sustaining CO2 mass emission, MCO2,CS, according to Table A8/5, step no. 8 between test vehicles L and H is between a minimum of 5 g/km and a maximum of 20 per cent plus 5 g/km of the charge-sustaining CO2 mass emission, MCO2,CS, according to Table A8/5, step no. 8 for vehicle H, but at least 15 g/km and not exceeding 20 g/km.\nAt the request of the manufacturer and with approval of the approval authority, the application of the interpolation method on individual vehicle values within a family may be extended if the maximum extrapolation is not more than 3 g/km above the charge-sustaining CO2 mass emission of vehicle H and/or is not more than 3 g/km below the charge-sustaining CO2 mass emission of vehicle L. This extension is valid only within the absolute boundaries of the interpolation range specified in this paragraph.\nThe maximum absolute boundary of 20 g/km charge-sustaining CO2 mass emission difference between vehicle L and vehicle H or 20 per cent of the charge-sustaining CO2 mass emission for vehicle H, whichever is smaller, may be extended by 10 g/km if a vehicle M is tested. Vehicle M is a vehicle within the interpolation family with a cycle energy demand within ± 10 per cent of the arithmetic average of vehicles L and H.\nThe linearity of charge-sustaining CO2 mass emission for vehicle M shall be verified against the linear interpolated charge-sustaining CO2 mass emission between vehicle L and H.\nThe linearity criterion for vehicle M shall be considered fulfilled if the difference between the charge-sustaining CO2 mass emission of vehicle M derived from the measurement and the interpolated charge-sustaining CO2 mass emission between vehicle L and H is below 1 g/km. If this difference is greater, the linearity criterion shall be considered to be fulfilled if this difference is 3 g/km or 3 per cent of the interpolated charge-sustaining CO2 mass emission for vehicle M, whichever is smaller.\nIf the linearity criterion is fulfilled, the interpolation method shall be applicable for all individual vehicles between vehicles L and H within the interpolation family.\nIf the linearity criterion is not fulfilled, the interpolation family shall be split into two sub-families for vehicles with a cycle energy demand between vehicles L and M, and vehicles with a cycle energy demand between vehicles M and H.\nFor vehicles with a cycle energy demand between that of vehicles L and M, each parameter of vehicle H necessary for the application of the interpolation method on individual OVC-HEV and NOVC-HEV values, shall be substituted by the corresponding parameter of vehicle M.\nFor vehicles with a cycle energy demand between that of vehicles M and H, each parameter of vehicle L that is necessary for the application of the interpolation method on individual OVC-HEV and NOVC-HEV values shall be substituted by the corresponding parameter of vehicle M.",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Regulation (EU) 2018/1832 of 5 November 2018 amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) 2017/1151 for the purpose of improving the emission type approval tests and procedures for light passenger and commercial vehicles, including those for in-service conformity and real-driving emissions and introducing devices for monitoring the consumption of fuel and electric energy (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2017/1151/annex/Sub/8n1/division/division/4./division/4.5./division/4.5.1.",
    "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."
}