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# How do we calculate the Ecoscore of Euro 6 vehicles?

These are the formulas to calculate the Ecoscore of Euro 6 cars and vans:

Petrol:

• Ecoscore = 100*exp[-0.00357*(0,36*CO2 + 23,17*HC + 101,88*NOx + 0,011*CO + 1407,75*PM + 7,01*FC+ 0,333*dB(A) - 12,63)]

• Ecoscore Air Quality = 100*exp[-0.00357*2.5*(23,17*HC + 101,88*NOx + 0,011*CO + 1407,75*PM + 5,89*FC)]

Diesel:

• Ecoscore = 100*exp[-0.00357*(0,36*CO2 + 23,17*HC + 101,88*0,5 + 0,011*CO + 1407,75*PM + 5,19*FC+ 0,333*dB(A) - 12,39)]

• Ecoscore Air Quality = 100*exp[-0.00357*2.5*(23,17*HC + 101,88*0,5 + 0,011*CO + 1407,75*PM + 4,25*FC)]

CNG:

• Ecoscore = 100*exp[-0.00357*(0,36*CO2 + 23,17*HC + 101,88*NOx + 0,011*CO + 1407,75*PM + 3,67*FC+ 0,333*dB(A) – 11,76)]

• Ecoscore Air Quality = 100*exp[-0.00357*2.5*(23,17*HC + 101,88*NOx + 0,011*CO + 1407,75*PM + 2,03*FC)]

EV:

• Ecoscore = 100*exp[-0.00357*( 2,17*FC + 0,333*dB(A) – 13,33)]

• Ecoscore Air Quality = 100*exp[-0.00357*2.5*(1,16*FC)]

PHEV petrol:

• Ecoscore = 100*exp[-0.00357*(0,36*CO2 + 23,17*HC + 101,88*NOx + 0,011*CO + 1407,75*PM + 7,01*FCptr + 2,17*FCEV+ 0,333*dB(A) – 12,98)]

• Ecoscore Air Quality = 100*exp[-0.00357*2.5*(23,17*HC + 101,88*NOx + 0,011*CO + 1407,75*PM + 5,89*FCptr + 1,16*FCEV)]

PHEV diesel:

• Ecoscore = 100*exp[-0.00357*(0,36*CO2 + 23,17*HC + 101,88*0,5*25/(25+RangeEV) + 0,011*CO + 1407,75*PM + 5,19*FCdsl + 2,17*FCEV+ 0,333*dB(A) – 12,86)]

• Ecoscore Air Quality = 100*exp[-0.00357*2.5*(23,17*HC + 101,88*0,5*25/(25+RangeEV)+ 0,011*CO + 1407,75*PM + 4,25*FCdsl + 1,16*FCEV)]

LPG:

• Ecoscore = 100*exp[-0.00357*(0,36*CO2 + 23,17*HC + 101,88*NOx + 0,011*CO + 1407,75*PM + 2,91*FC+ 0,333*dB(A) - 12,63)]

• Ecoscore Air Quality = 100*exp[-0.00357*2.5*(23,17*HC + 101,88*NOx + 0,011*CO + 1407,75*PM + 2,32*FC)]

Of which the following parameters are mentioned on the certificate of conformity:

CO2                        CO2 emission (combined) (g/km)

HC                          for petrol, LPG and CNG vehicles: HC emission (g/km)

for diesel vehicles: the difference between the HC+NOx and the NOx emissions (g/km)

NOx                       for petrol, CNG and LPG: NOx emission (g/km)

for diesel vehicles complying with Euro 6, this is 0.5 g/km (for more info, click here)

CO                          CO emission (g/km)

PM                         the particulate emissions (g/km)

FC(xxx)                     for petrol, diesel and LPG vehicles: the avg. fuel consumption (combined cycle),  in l/100km

for CNG: the average fuel consumption (combined cycle), in kg/100km

for EV:  the average electricity consumption (combined cycle), in kWh/100km

for PHEV: the weighted petrol or diesel consumption (combined cycle) in l/100km (FCptr resp. FCdsl) and the weighted (combined cycle) electricity consumption (FCEV) in kWh/100km

dB(A)                     the noise level (driving), expressed in dB(A)

RangeEV                the range (km) of the PHEV in electricity only mode

last database update: 12/05/2022 - next database update planned for: 15/07/2022