Yes. These figures are pretty accurate to the fuel efficiency I’ve achieved from two Wranglers, the 2004 Sport and the 2006 Unlimited. The Sport will do slightly better than the Unlimited because it is after all, lighter due to less steel. Do remember, though, the fuel economy was not solely a function of my speed. I also tend to accelerate pretty slow and usually don’t use my air conditioning either.

As far as getting a used Wrangler goes, depending on the wheel size and gear ratios the previous owner has installed, it is generally a fair assumption think 17-18mpg for average driving across almost all TJ models. The entire year I was in Iraq, my parents always came up 50 miles shorter per tank than I would, which leads me to believe even further that the fuel economy is based on the aggregate of many conservative driving habits.