Driving the way I do, I don't usully get a lot,
My orion did 40 miles to a tenner or 200 to a full tank (£40) on Optimax
My saff does 50ish miles to a tenner or 120ish to £20 havn't filled it up to the top yet, don't know how that rates it's only stage 1.

(don't think its running right though, will be on Friday though going to MSD!!!

)