I've got a 2000 XE 4x4. It has almost 90K on the odometer and I haven't had any problems with it. Owned it since it had 54K. The stated towing capacity for 00' with AT is 5000lbs. The MT is 3250lbs. I think?
I'm running 31" mud tires and getting around 16mpg, when I had street tires on I was getting close to 19mpg.
My brother in-law has an 02' Supercharged model with 32" AT tires and get's only 11-12mpg.
Not sure if this is helpful, but I haven't had any issues with my rig. No repairs at all. Just basic care.