Kg CO2 per litre of petrol

If you burn a litre of diesel this will produce 2.6391 kgs of carbon dioxide. Petrol has a lower carbon content and so produces 2.3035 kgs of CO2. The precise figures depend on the quality of the fuel. Since fuel weighs less than a kilogram per litre, it is interesting to see how the weight of emissions is multiplied by the addition of oxygen. The tables below show how the official test figures for CO2 emissions and combined MPG can be equated to see how individual vehicles perform in terms of CO2 per litre. Some cars appear to do better than the standard chemistry would suggest, whereas others do worse. The official tests measure exhaust gases only and then calculate the fuel consumption. So these figures show how far off the recording of test results can be due to errors, rounding differences, and the leeway of around 4% given to manufacturers to decide on which fuel consumption figure to use.

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Top 10 CO2 per litre petrol vehicles
make model derivative CO2 (kg/l) CO2 (gpkm) Litre per 100km MPG (combined)
makeMcLarenmodel570GTderivative3.8 Twin-Turbo V8 570PS AutoCO2kg/l1.08CO2gpkm249Litre per 100km23.15MPG (combined)12.2
makeMcLarenmodel570S Coupéderivative3.8 Twin-Turbo V8 570PS AutoCO2kg/l1.08CO2gpkm249Litre per 100km23.15MPG (combined)12.2
makeMcLarenmodel570S Spiderderivative3.8 Twin-Turbo V8 570PS AutoCO2kg/l1.08CO2gpkm249Litre per 100km23.15MPG (combined)12.2
makeMcLarenmodel720Sderivative4.0 Twin-Turbo V8 720PS AutoCO2kg/l1.08CO2gpkm249Litre per 100km23.15MPG (combined)12.2
makeMcLarenmodel720S Spiderderivative4.0 Twin-Turbo V8 720PS AutoCO2kg/l1.08CO2gpkm249Litre per 100km23.15MPG (combined)12.2
makeBMWmodelX5derivativexDrive40i xLine AutoCO2kg/l1.51CO2gpkm162Litre per 100km10.7MPG (combined)26.4
makeCitroenmodelC1derivative1.0 VTi Touch 72hp 3 doorCO2kg/l1.57CO2gpkm85Litre per 100km5.41MPG (combined)52.2
makeBMWmodelX5derivativexDrive40i M Sport AutoCO2kg/l1.6CO2gpkm166Litre per 100km10.39MPG (combined)27.2
makeHondamodelCivic 5 Doorderivative1.0 VTEC Turbo EX 126PS CVTCO2kg/l1.6CO2gpkm107Litre per 100km6.69MPG (combined)42.2
makeHondamodelCivic 5 Doorderivative1.0 VTEC Turbo Sport Line 126PS CVTCO2kg/l1.62CO2gpkm107Litre per 100km6.6MPG (combined)42.8
Bottom 10 CO2 per litre petrol vehicles
make model derivative CO2 (kg/l) CO2 (gpkm) Litre per 100km MPG (combined)
makeSkodamodelSuperb Estatederivative2.0 TSI SportLine Plus 272PS 4x4 DSG SCRCO2kg/l3.58CO2gpkm162Litre per 100km4.52MPG (combined)62.5
makeJeepmodelGrand Cherokeederivative6.2 V8 HEMI TrackHawk Supercharged AutoCO2kg/l2.87CO2gpkm395Litre per 100km13.78MPG (combined)20.5
makeMINImodelClubmanderivative2.0i Cooper S Sport 192hpCO2kg/l2.83CO2gpkm147Litre per 100km5.2MPG (combined)54.3
makeMINImodelClubmanderivative2.0i Cooper S Exclusive 192hpCO2kg/l2.79CO2gpkm145Litre per 100km5.2MPG (combined)54.3
makeAston MartinmodelVantagederivative4.0 V8 Vantage AMR Hero 503hp AutoCO2kg/l2.76CO2gpkm285Litre per 100km10.31MPG (combined)27.4
makeAlfa RomeomodelGiuliettaderivative1.4 TB Nero Edizione 120hpCO2kg/l2.65CO2gpkm164Litre per 100km6.19MPG (combined)45.6
makeFordmodelKugaderivative1.5T EcoBoost Titanium X 150PS FWD (S/S)CO2kg/l2.65CO2gpkm164Litre per 100km6.19MPG (combined)45.6
makeFordmodelNew Transit Connect Double Cab-in-Vanderivative1.0 EcoBoost 220 L1 Trend 100PSCO2kg/l2.6CO2gpkm146Litre per 100km5.6MPG (combined)50.4
makeMorganmodelAero 8derivative4.8 V8CO2kg/l2.52CO2gpkm282Litre per 100km11.21MPG (combined)25.2
makeJaguarmodelXEderivative2.0 Petrol SE 200PS RWD AutoCO2kg/l2.48CO2gpkm165Litre per 100km6.65MPG (combined)42.5