With 255/85's, bumpers, winch, suspension, protection and a spare tire on the roof I find that it really depends on speed. If I do 75, I average 14 - 15. At 55 - 65 I get around 17+. But I am overall a light throttle driver. Did great coming to NorCal today - it was all downhill
Bone stock, I did regular trips where I was 22 MPG plus. (and yes that is converted to USA MPG).
So from my experience there is no single number for Tacomas. It's all very driver and mod dependent.
/ -- \ Pete Hartl - VE6PGH - 0VRLAND
EXPEDITION = (Encounters + Adventures + Experiences) x YOU