2000 Navigator

I'm looking into buying one of these. Are there any common problems with these trucks? Also how much does it cost to fill these bad boys tanks an how far am i gonna get on a tank??

I've had my 2000 for a little over 2 years and love it. The only problem I have had was a broken vacuum line. I get an average of 14.5 mpg on regular fuel and a very conferrable ride. My configuration is 4 bucket seats and a third seat bench. It is not a 4x4.

Hope this helps

Lou