I have a 1998 Jeep Grand Cherokee Laredo. It has over 162K on it and still runs great. I have to replace the brake rotors too often but other than that it's been very reliable. It failed to get me to my destination only twice. Once, with about 20K miles, the float in the gas tank failed, resulting in an inaccurate gas tank reading. Consequently I ran out of gas. Then at about 155K the ignition switch failed so it wouldn't start. I'm going to keep it until it dies! I do some minor off roading, nothing too tough - more ruts and rocks than anything else. I have the V6, and it gets 17-19 MPG.
Reliability, room, all weather traction, outside temperature reading.