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.

Click here to see diesel cars

Top 10 CO2 per litre petrol cars
Make Model Derivative CO2 (kg)/litre CO2 (gpkm) Litre per 100km MPG (combined) List price
Land Rover Range Rover Evoque 2.0 Si4 HSE Dynamic 240hp 4WD Auto 2.11 165 7.80 36.2 £45,400
Vauxhall Grandland X 1.2 SE 130PS Turbo Start/Stop 2.17 117 5.40 52.3 £22,485
BMW 5 Series Touring New 520i M Sport Auto 2.19 136 6.21 45.5 £41,975
McLaren 570GT 3.8 Twin-Turbo V8 570PS Auto 2.19 258 11.77 24.0 £156,935
Mercedes-Benz C-Class Saloon C 200 SE 7-speed G-Tronic 2.19 123 5.60 50.4 £30,635
McLaren 540C Coupé 3.8 Twin-Turbo V8 540PS Auto 2.21 258 11.67 24.2 £127,820
McLaren 570S Coupé 3.8 Twin-Turbo V8 570PS Auto 2.21 258 11.67 24.2 £145,070
Renault Twingo 0.9 TCe 100 GT 2.21 115 5.20 54.3 £14,250
Ford Mustang Fastback 5.0 V8 GT 418PS 2.21 299 13.52 20.9 £38,095
Dacia Logan New 1.0 SCe Access 75hp 2.22 120 5.40 52.3 £7,295
Bottom 10 CO2 per litre petrol cars
Make Model Derivative CO2 (kg)/litre CO2 (gpkm) Litre per 100km MPG (combined) List price
SEAT Leon 5 Door 2.0 TSI Cupra 300PS Start/Stop 2.68 158 5.90 47.9 £30,455
SEAT Ibiza New 1.5 TSI EVO FR 150PS 2.67 112 4.20 67.3 £17,680
SEAT Ibiza New 1.0 TSI FR 115PS DSG 2.57 108 4.20 67.3 £17,710
Morgan Aero 8 4.8 V8 2.52 282 11.21 25.2 £102,005
Land Rover Range Rover Evoque 2.0 Si4 HSE Dynamic Lux 240hp 4WD Auto 2.48 181 7.30 38.7 £48,915
Skoda Octavia Estate New 2.0 TSI vRS 230PS 2.44 149 6.10 46.3 £26,385
Vauxhall Zafira Tourer 1.4i VVT Turbo Design 140PS 2.44 156 6.41 44.1 £19,530
Audi A4 Avant 2.0 TFSI S Line 190PS S Tronic 2.41 130 5.40 52.3 £35,190
Volkswagen Golf 3 Door New 2.0 TSI R 310PS BMT 4MOTION 2.40 180 7.49 37.7 £32,710
Volkswagen Golf 5 Door New 2.0 TSI R 310PS BMT 4MOTION 2.40 180 7.49 37.7 £33,365