# Commission Implementing Decision (EU) 2017/1402 of 28 July 2017 on the approval of the BMW AG engine idle coasting function as an innovative technology for reducing CO2 emissions from passenger cars pursuant to Regulation (EC) No 443/2009 of the European Parliament and of the Council (Text with EEA relevance), Division 7: CALCULATION OF THE STATISTICAL MARGIN

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

The statistical margin in the results of the testing methodology is to be quantified. The statistical margin of the total CO2 saving shall not exceed 0,5 g CO2/km as expressed in the following Formula 5:
Formula 5:
s C CO 2 ≤ 0,5 gCO 2 ∕ km
Where,
s C CO 2 Statistical margin of the total CO2 savings [g CO2/km].
The statistical margin shall be calculated in accordance with the following Formula 6:
Formula 6
s C CO 2 = c × UF × s B TA hot 2 + − UF × s E MC 2 + c × B TA hot − E MC × s UF 2
Where,
s C CO 2 Statistical margin of the total CO2 savings [g CO2/km];
c Conversion parameter which is 0,960;
B TA hot Arithmetic mean of the CO2 emission of the baseline vehicle under type approval hot start conditions [gCO2/km];
s B TA hot Standard deviation of the arithmetic mean of the CO2 emission of the baseline vehicle under modified testing conditions [gCO2/km];
EMC Arithmetic mean of the CO2 emission of the eco-innovation vehicle under modified testing conditions [gCO2/km];
s E MC Standard deviation of the arithmetic mean of the CO2 emission of the eco-innovation vehicle under modified testing conditions [gCO2/km];
UF Usage factor of the BMW engine idle coasting function which is 0,62; this value is representative only for the BMW fleet;
sUF Standard deviation of the arithmetic mean of the usage factor, which is 0,019; this value is representative only for the BMW fleet.

---
Source: https://www.legislation.gov.uk/eudn/2017/1402/annex/division/7 (the official version)
Page: https://openlegislation.uk/eu-decision-2017-1402/annex/division-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.