Hi K2
My Disco II does between 2.5 and 3 miles per litre on gas. Never checked it on petrol, costs too much.
That works out between 11 and 14miles to the gallon, or 21p to 17p per mile in fuel alone. (Round figures @51.9 ppl)
Derv works out about the same in fuel costs per mile.
If saving money is your prime concern, then Veg Oil may be the way to go, there are many discussions on this in the alternative fuels section.
However, if you love the sound of a V8..... :dance: :P
Ed