Car buyers will be able to find the most environmentally friendly vehicles for their needs from today, as Transport Minister Jim Fitzpatrick launched the Department for Transport's 'Best on CO2' car rankings. People considering buying a new car can now visit www.dft.gov.uk/actonCO2, search for the type they're looking for by What Car? category, transmission and fuel type and automatically be given a list of the lowest CO2 emitting models according to their requirements.

This is a fantastic idea as we all need to tackle climate change as it effects us all. By choosing the car with the most fuel efficient engine in its class, drivers could reduce their engine CO2 emissions by 24 % and potentially save a quarter on fuel costs. So the message is simple - the car you choose can help reduce your impact on the environment, and help save money. And the results for the Best on CO2 car categories are:

Supermini, Small family, Family, Estate, MPV, Compact Executive, Executive, Coupe, Open-top, Hot hatch, Compact 4x4, Large 4x4, Luxury, Performance Car.

Are you surprised, as I am, to see the Chelsea Tractors in the top 10? You see, some are actually environmentally friendly. That should seal the lips of the sceptics and Mr Livingstone.

Jackie Violet - Female First