# Commission Implementing Decision (EU) 2018/2079 of 19 December 2018 on the approval of the 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: Formula 1:

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

C CO 2 = B MC − E MC × UF MC − B TA − E TA × UF TA Where
C CO 2 CO2 savings [gCO2/km]
BMC Arithmetic mean of the CO2 emissions of the baseline vehicle under modified testing conditions [gCO2/km]
EMC Arithmetic mean of the CO2 emission of the eco-innovation technology vehicle under modified testing conditions [gCO2/km]
BTA Arithmetic mean of the CO2 emission of the baseline vehicle under type approval (NEDC) testing conditions [gCO2/km]
ETA Arithmetic mean of the CO2 emission of the eco-innovation technology vehicle under type approval (NEDC) testing conditions [gCO2/km]
UFMC Usage factor of the coasting technology under modified conditions, which is 0,52 for vehicles equipped with a conventional powertrain and an automatic transmission and 0,48 for vehicles equipped with a conventional powertrain and a manual transmission with an automated clutch.
UFTA Usage factor of the coasting technology under type approval (NEDC) conditions
Since the innovative technology is not active under type approval (NEDC) conditions, the general equation for calculating the CO2 savings can be simplified as follows:

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Source: https://www.legislation.gov.uk/eudn/2018/2079/annex/division/9/division/1 (the official version)
Page: https://openlegislation.uk/eu-decision-2018-2079/annex/division-9/division-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.