We have 240,000 miles so far and the only complaint is the transmission. It cost $1800 to rebuild and it appears to be a common problem on 1995 - 2001 Explorers with over 100k miles. If you're looking at a used Explorer with 100k+ miles, pay attention to the transmission! Other than that we love this truck. It is great in snow, very comfortable, and extremely reliable (except when transmission left my wife stranded). Even with 240k miles I would not hesitate to drive it on a cross country trip. The fuel economy is around 14/18, which is about average for this type of vehicle. The vinyl on the center console cover will crack too. I have never seen one that wasn't cracked.
Exterior and interior styling, comfort and power.
It's too old for anyone to care, but the only promblem we have had was with the transmission.