2.

Remarks: the complete LPG or CNG installation shall be checked against the UN Regulations No 67, No 110 or No 115, as appropriate; the formula to be used for the assessment of CO2 emissions shall be as follows: Where: CO2 is the combined mass of CO2 emissions in g/km, ‘m’ is the mass of the vehicle in running order in kg and ‘p’ the maximum engine power output in kW. Combined mass of CO2 shall be calculated with one decimal place, then rounded to the nearest whole number as follows: | Petrol engine and manual gearbox: CO2 = 0,047 m + 0,561 p + 56,621 | Petrol engine and automatic gearbox CO2 = 0,102 m + 0,328 p + 9,481 | Petrol engine and hybrid electric: CO2 = 0,116 m – 57,147 | Diesel engine and manual gearbox: CO2 = 0,108 m – 11,371 | Diesel engine and automatic gearbox: CO2 = 0,116 m – 6,432 if the figure following the decimal point is below 5, the total is rounded down; if the figure following the decimal point is equal to 5 or above 5, the total is rounded up; the formula to be used for the assessment of fuel consumption shall be as follows: CFC = CO2 × k – 1 Where: CFC is the combined fuel consumption in l/100 km, CO2 is the combined mass of CO2 emissions in g/km after it has been rounded in accordance with the rule referred to in Remark (2 b), ‘k’ a coefficient equal to: Combined fuel consumption shall be calculated with two decimal places, then rounded as follows: | 23,81 in the case of a petrol engine; | 26,49 in the case of a diesel engine. if the figure following the first decimal is below 5, the total is rounded down; if the figure following the first decimal is equal to 5 or above 5, the total is rounded up.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-12 · Text as adopted (Official Journal); later amendments are not incorporated in this text.