MPG on an XB

I'm currently driving a crew cab pick up getting 15MPG and looking for something to get better MPG on highway trips, which is 80% of my driving. My question is, how is the MPG on an XB at say 65+ maybe 75+? Is it like anything else and drop off after about 60?

I am wondering because I'm liking the 30MPG on the low end, but if it's lower than that at 70+, then it may not be worth it. I figure if I can get 30MPG+ I will save $2500/yr or so.

I get 30 mpg all the way around on my xb, you'll get shit for milage till after 10,000 miles shit being less then 30, but more then 25

I got 34-37mpg all day long no matter how fast I drive in my '05 XB. I have since turbo'd the car because the 108hp was just not enough. After that I am getting 27-30mpg which is still not bad.

i am getting about 28-35 mpg depending on traffic in my xb, still wouldnt trade it for the world