Just under 12K and driving about 40/60 city/hwy, I am getting about 20 mpg combined and about 22 on the hwy in a stock SR5. Highway speed is about 65-70.
Adding to what 1engineer stated above, in my mind, mpg threads don't provide much information other than FYI. If someone was seriously concerned about the effect a mod has on mpg, its probably better that the mod is skipped from a cost standpoint alone. Not many mods will have the effect of increasing gas mileage (other than an adjustment in driving habits) and, if they do, one should ask how many tanks of gas will they need to buy before seeing the cost of the mod recovered in fuel savings. Most of us will probably end up modding our vehicles the way we want regardless of the effect on fuel mileage. At best, if there is a mod that someone might *slightly* be considering (due to aesthetic reasons, etc), the effect on mpg may sway the decision when considered with the cost. But if someone is seriously, considering a mod, I don't think mpg will weigh on the decision much at all.