Jeep wrangler mpg: Why is mine only 10mpg? How can this improve?

JustVater

New member
I filled my tank up completely and recorded the milage. Once the tank was empty I did some simple math and found out I'm averaging barely above 10mpg. I drive a Jeep Wrangler Unlimited and they are supposed to get 15-16mpg. What might be causing my problem of horrible mpg? What can I do to improve my mpg. (I already bought a new air intake but haven't installed it yet.)
I am quite satisfied with the answers so far but.... what can I change / add to improve milage.

There is no lift and the tires are new but standard size. The only add-ons it has is stereo and bullbars.
 
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