The next step in the engine lineup for the 2014 Ford Explorer is the Duratec naturally aspirated (non-turbocharged) 3.5-liter V6. It gives the horsepower figure a healthy bump to 290, though the torque dips compared to the 2.0L with a rating of 255 lb.-ft. As one might expect, it also drops the fuel economy ratings.
highway. 6.7 gal/100mi. 2017 Ford Explorer FWD 4 cyl, 2.3 L, Automatic (S6) Regular Gasoline. View Estimates.

The 2012 Ford Explorer comes standard with a 3.5-liter V6 that produces 290 horsepower and 255 pound-feet of torque. A six-speed automatic transmission and front-wheel drive are standard.

The base engine would be fine, but if you are looking to do some towing I would prefer the 5.0 or the 3.5 Ecoboost. I currently lease a 2013 F-150 4x4 Lariat Super crew with the Ecoboost 3.5 and haven't had any issues with it in 40,000 miles. The fuel mileage is not great, but it is a damned nice truck. . 367 312 456 94 285 341 300 436

ford explorer 3.5 v6 fuel economy