For most shoppers who would consider a Wrangler, fuel efficiency is simply not a priority.
Well, it's not a strong suit for the Wrangler anyhow; but it is a bit more fuel-efficient than it was several years ago, before it was given an upgrade to its current V-6 engine.
For two-door Wrangler models with the 3.6-liter V-6, it's rated at 17 mpg city, 21 highway, 18 combined with either the manual or automatic. Step up to the larger Wrangler Unlimited and those ratings drop slightly to 16/21/18 mpg for the manual and 16/20/18 mpg for the automatic.
Fuel economy can be a deal-breaker for the Wrangler. If you're willing to deal with the extra fuel costs, the Wrangler can take you up and down trails that most other SUVs just can't. If those EPA numbers are a concern for you and you're just interested in all-wheel drive, it's worth looking at a crossover instead.