3.6 in A-body

I have a 3.2 Pentastar in my wife's Jeep Cherokee. It's got less than 40k miles on it, but so far I like it. What kind of mileage do you get in it? What does the car weigh?

Not sure really on mpg since I don't have a working speedometer.
If I had to guess its around 25-30mpg if I'm not hammering it(which i do)