What mileage should I be getting in my 2332 VW powered sand rail buggy?

What mileage should I get in my 2332 VW powered sandrail??? I just finished building it and it is up for sale. Someone asked me what mileage it gets. It is a 2332 cc vw motor machined for full flow oil. What do you think a 2332 is capable of?|||if you stay out of the dual carbs. i get 45 mpg with mine's.