§ Mr. Challen
To ask the Secretary of State for Transport how many tonnes of carbon dioxide emissions he estimates have been saved as a result of the liquid petroleum gas duty rebate; and at what cost to public funds. 
§ Mr. Jamieson
The Department estimates that favourable duty rates for LPG since 1996 have saved around 343.3 thousand tonnes of carbon dioxide at a cost of around £160.7 million in terms of duty forgone. This estimate assumes that all LPG has replaced petrol and not diesel.