Such data should ideally be in the form of the results of independently verified emissions tests, at an identified test site. The ideal comparators would be UK specification ultra low sulphur diesel or ultra low sulphur petrol. Advice on emissions testing protocols is available from DETR - see the contact at the end of this paper. Climate Change - The UK Programme , published in November 2000, set out the policies the Government was putting in place to meet the Kyoto agreement and move towards our domestic goal. The combustion of most fuels is associated with emissions of CO2, though different types of engine have a major effect on the combustion rate of the fuel and therefore CO2 emissions, and different fuels contain different levels of carbon.
Some fuels also produce other greenhouse gases such as methane.
It is therefore important that we receive information about the greenhouse gas emissions associated with a fuel. This information should be provided on a lifecycle basis, as, unlike for air quality, it is not important where greenhouse gas emissions are produced. It should include, where appropriate, information about emissions associated with the production, distribution and combustion of the fuel. For bio-fuels, tailpipe emissions of CO2 should be largely offset by the CO2 absorbed during the growth of the feedstock, but we would welcome views from consultees on this issue. Other environmental impacts 13.