This calculator works out how much carbon dioxide is released when you burn a certain amount of fuel. The figures are averages as the weights of diesel and petrol depend on a number of factors such as the temperature and the quality of the fuel.
You can use this to keep a track of how much CO2 you created per mile driven.
Darren has owned several companies in the automotive, advertising and education industries. He has run driving theory educational websites since 2010.