What kind of mpg do you guys get in your scort RSs's?

Only had mine since last sat, but i am finding it very heavy on juice, i'm not pushing it hard either, and i cant smell any fuel leaks, i am getting roughly 60 miles to 20 quid, which cant be right

Any ideas? its practicaly standard, with only an exhaust, panel filter, dv, bleed valve set at 10psi.

I need to use it as an everyday car, but with this sort of consumption, i'm having worries i wont be able to keep it.