The 4 banger is practically a 4.0 with two cylinders missing. Very reliable. Normal wear and tear items like water pumps, pulleys, hoses, etc. You can tell a lot by the sounds under the hood and the exhaust. Have a look at the interior. It tells you a lot how the previous owner took care of it.
For instance; I drove a long way (and $120 worth of ferry fares) to look at a 2000. The story had an older woman owning for 13 years and low mileage. When I got there, the interior was sh*t, seats torn, and it looked tired and beat everywhere. I didn't think you could trash a vehicle that badly in 16 years. The same day, I checked out a 2001 (same everything) and it was in far better condition. All original interior in great shape, no rust, and just needed some maintenance items. Sometimes you need to step back if your not sure.