2006 Ford Econoline Wagon E-350 SD XLT 3dr Van (5.4L 8cyl 4A)
I bought this van to be used at work to haul a cargo trailer plus take family vacations with a camper trailer in tow. The 5.4l motor gets about 16- 17mpg on the interstate at 72mph lightly loaded. When pulling a 22' trailer, the mileage drops to about 8mpg (I installed a ScanGage to measure mpg, rpm, etc). Yes, there are squeaks and rattles, handles mediocre, and gives a rough ride. What else would you expect from a 1 ton van/truck? I would still buy another one.
Removing some of the bench seats. For example, on a long trip, we removed the 1st and 3rd row seats. This gave us a lot of room stretch out.
120v outlets. Eliminate the rear door swing limiting link (allow the doors to swing 180 degrees without the fuss).