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
makemodelderivativeCO2 (kg/l)CO2 (gpkm)Litre per 100kmMPG (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
makeAston MartinmodelDBS Superleggeraderivative5.2 V12 715hp AutoCO2kg/l1.25CO2gpkm285Litre per 100km22.78MPG (combined)12.4
makeVauxhallmodelGrandland Xderivative1.2 SE 130PS Turbo Start/Stop AutoCO2kg/l1.57CO2gpkm119Litre per 100km7.59MPG (combined)37.2
makeVauxhallmodelGrandland Xderivative1.2 Tech Line Nav 130PS Turbo Start/Stop AutoCO2kg/l1.59CO2gpkm121Litre per 100km7.59MPG (combined)37.2
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
makeSEATmodelAtecaderivative1.5 EcoTSI EVO XCELLENCE 150PS DSGCO2kg/l1.64CO2gpkm126Litre per 100km7.7MPG (combined)36.7
makeVauxhallmodelCrossland Xderivative1.2 SE 110PS Turbo S/S ecoTECCO2kg/l1.64CO2gpkm108Litre per 100km6.6MPG (combined)42.8
Bottom 10 CO2 per litre petrol vehicles
makemodelderivativeCO2 (kg/l)CO2 (gpkm)Litre per 100kmMPG (combined)
makeSkodamodelSuperb Estatederivative2.0 TSI SportLine Plus 272PS 4x4 DSG SCRCO2kg/l3.58CO2gpkm162Litre per 100km4.52MPG (combined)62.5
makeLand RovermodelRange Rover Sportderivative5.0 V8 Supercharged SVR 550hp AutoCO2kg/l3.12CO2gpkm290Litre per 100km9.29MPG (combined)30.4
makeSEATmodelAlhambraderivative1.4 TSI SE 150PSCO2kg/l2.89CO2gpkm153Litre per 100km5.3MPG (combined)53.3
makeCitroenmodelC3 Aircross SUVderivative1.2 PureTech Feel 130hp S&SCO2kg/l2.7CO2gpkm119Litre per 100km4.4MPG (combined)64.2
makeAlfa RomeomodelGiuliettaderivative1.4 TB Sport 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
makeJeepmodelCompassderivative1.4 MultiAir II 168hp Limited 4WD AutoCO2kg/l2.65CO2gpkm183Litre per 100km6.91MPG (combined)40.9
makeJeepmodelRenegade Newderivative1.6 MultiAir II 120hp Limited 4x2CO2kg/l2.63CO2gpkm129Litre per 100km4.9MPG (combined)57.6
makeKiamodelPicantoderivative1.25 GT-Line S 83hpCO2kg/l2.61CO2gpkm120Litre per 100km4.6MPG (combined)61.4
makeFordmodelTransit Connect Double Cab-In Newderivative1.0 L1 220 EcoBoost Trend 100PSCO2kg/l2.6CO2gpkm146Litre per 100km5.6MPG (combined)50.4