I have like over 97000 miles on my car. It's a 2K GT. My next scheduled oil change will be when at 10O+K. Sometimes I wonder if I should spend money modding it. I'm planning on getting a kit before the summer is over. My next car's gonna be a 350Z or a G35 Coupe and I want to get either one before or by the time I graduate (May 2005).
Anyway, to answer your question
I don't think you'll have too many problems. The only thing that I had to do with my car so far was change the clutch and flywheel and brakes. And like I said, I'm over 97000 so with that in mind, I think it's pretty good. Toyota makes excellent quality cars.