 Purchased this vehicle with the optional tow package which is wiring connections for 5 wire system,  integral receiver, transmission cooler, and larger alternator.  This was wired for five wire, I converted it to 7 wire with brake control so I could have electric brakes on my towed travel trailer. Mileage when towing a 3000 lb travel trailer is around 12 mpg. Best I ever got for one tank of gas was 15.5 mpg & the worst was 8 mpg. This was against a 40-50 mph headwind.  I  have one rear shock replaced under warranty as it was leaking and rear trailer arm replaced as part of a service bulletin also under warranty.  Rides nice, tows great, and comfortable ride.