I'm a Toyota woman, and my car is a 2001 with 115K miles on it. You are coming up to a big repair at around 100K - the timing belt (or chain - it varies). Depending on how the engine is set up, it can be a pricy thing to fix.
While I put in a fair amount of money into my car (tire replacement, brakes, etc) and some people said I put too much into a car that wasn't worth it, I considered instead the replacement cost. My original plan was to drive it 15-20 years, possibly replacing the engine at some point if need be. As it is, I'm going on 13 years, and consider my car still "low mileage" for a Toyota. So I'd rather pump in 2-3K over the next 5-7 years than buy a new car.
And yes, I wrote new and meant new. I grew up on the poor side, and my first couple of cars were the rip-off ones sold to poor youth. The family wasn't much better in terms of having success with cars. I cannot tell you how much time and agony (and money that I didn't have) were spent in my youth with beater cars. Never again. I bought this one new (at a fair price) with 2.99% financing, and paid it off a little earlier to get rid of the car payment. I didn't worry about 'losing' all the money from driving it off the lot that I would never 'get back' since I didn't really plan to sell or trade it in. That money I "lost " was what I paid for peace of mind.
But what a stroke of luck to get this car!