Don't think of the 2013 Dodge Journey if you want to minimize your fuel budget. The Journey is solidly in the average range, among vehicles of this type, although if you're planning to go with the V-6 its real-world mileage is reasonably good.
Technically, the base four-cylinder engine and four-speed automatic transmission produce the best mileage ratings in the lineup--an EPA-rated 19/26 mpg. That's lower than most other four-cylinder crossovers, and not at all impressive.
The V-6 versions have somewhat lower numbers, but they're directly competitive with other V-6 crossovers, and we've seen good numbers in real-world driving, with results that meet or beat the Journey's 17-mpg city, 25 highway EPA ratings. Over about 700 miles of driving—across Michigan, and including a mix of freeway driving, family-hauling, and suburban side trips—we averaged 24 mpg. That's not far from what we've seen in four-cylinder crossovers this size in that kind of driving, and those models' powertrains aren't as satisfying as this V-6.