My second Nissan Titan was a 4x4 Crew Cab SE model (mid level, not base, but not fully decked out either). I paid 24K new off the lot. Averaged 15.5 MPG. My first Titan was a base 2wd Crew Cab. Paid 19.9K new for it. Averaged 17.5 MPG. I don't know where you got your numbers from. I did tow a travel trailer from east Texas to Florida and back once with the 4x4. I averaged 11 mpg on that trip.