I puchased a 1998 Pathfinder SE 11/05 with only 60,000 miles mostly from city driving. I now have 82,000 miles on the vehicle and have overall been pleased. I am about to have the resonator (exhaust) replaced and have had the rear axle seals replaced as well. The only complaint other than limited power and lackluster fuel economy is the rear end feels as if it is not properly bolted to the axle--it feels like the back end is "floating" when making low speed turns. I have had it checked out by a shop and they claim is is common for the older pathfinders. It also has 1 small rust spot above the rear wheel on the drivers side. I was also told it will need new front rotors which will be about $300 a piece.
It's been reliable and comfortable to drive...
Interesting comment on the 98 Nissan Pathfinder. I had the right rear axle seals replaced under warranty at around 40,000 miles. Now they need to be replaced again at 138,000. Not a complaint, but I wonder if that is a glitch with the vehicle. It is kind of pricey since you have to replace the brakes that got ruined by the fluid all over them.
I have a '98 Chilkoot with 285,000 kilometers (about 180,000 miles). I did the exhaust manifold and right rear axle seal things over the past 6 years. Also, it has had the CEL (Check Engine Light) on for the past two years, but tried the advice of another commenter on this site, to turn my gas cap 8 clicks. It seemed like a silly thing to do, but as I drove away from the gas pump, there was no CEL visible. Thanks to the originator of this comment.