Bought the Expedition new in 1996, just after they came out; no major problems, but several recalls. The two problems I had included an engine oil leak, but Ford covered 75% of the repair; it seems there is a problem with the early 5.4L. There is a service bulletin on this. The other problem was the 4WD quit. A vacuum line had hit the manifold and melted, an easy fix once found. I have averaged 14.4 MPG so far, I record ever fill, so this is an accurate number. This includes a lot of trailer towing. Overall this has been a great vehicle.
Great vehicle for over the road drives well and lots of room, handles trailers very well. Also works good in snow and off-road.
Trim pieces on the exterior around windows oxidize and don't clean up. Would like to be able to get a manual tranny.