# Regulation (EU) 2019/1242 of the European Parliament and of the Council of 20 June 2019 setting CO2 emission performance standards for new heavy-duty vehicles and amending Regulations (EC) No 595/2009 and (EU) 2018/956 of the European Parliament and of the Council and Council Directive 96/53/EC (Text with EEA relevance), Division 2.3.2: Reporting periods from 2025 onwards

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

For each manufacturer and reporting period, the zero- and low-emission factor (ZLEV) referred to in Article 5 shall be calculated as follows:
ZLEV = 1 − y − x unless this sum is larger than 1 or lower than 0,97 in which case the ZLEV factor shall be set to 1 or 0,97, as the case may be
where:
x is 0,02
y is the sum of Vin and Vout, divided by Vtotal, where:
Vin is the total number of newly registered low- and zero-emission heavy-duty vehicles that meet the characteristics set out in the first subparagraph of Article 2(1), where each of them is counted as ZLEVspecific in accordance with the formula below:
ZLEVspecific = 1 − CO2v ∕ LET sg where:
CO2v is the specific CO2 emissions in g/km of a zero- or low-emission heavy-duty vehicle v determined in accordance with point 2.1;
LETsg is the low-emission threshold of the vehicle sub-group sg to which the vehicle v belongs as defined in point 2.3.3;
Vout is the total number of newly registered zero-emission heavy-duty vehicles referred to in the second subparagraph of Article 2(1), and with a maximum of 0,035 of Vtotal;
Vtotal is the total number of newly registered heavy-duty vehicles of the manufacturer in that reporting period.
Where Vin/Vtotal is lower than 0,0075, the ZLEV factor shall be set to 1.

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Source: https://www.legislation.gov.uk/eur/2019/1242/annex/I/division/2/division/2.3/division/2.3.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2019-1242/annex-I/division-2/division-2.3/division-2.3.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.