I purchased the car at around 45,000 miles and drove it for about 103,000 miles. I had to have the timing belt and clutch replaced when the vehicle hit around 100,000 on the odometer (normal maintenance). The drivers seat also became very uncomfortable and needed to be replaced at around 100,000 miles. At around 148,000 miles the catalytic converter went and that is when I decided the car was just too old and needed to go. Water pump blew up for the next owner not too long after that (good thing I gave him the car).
I drove this vehicle for about eight years without having to put a lot of money into it. I got around 45 miles per gallon highway mileage. I liked it a lot.
I am making a commentary on my own review of the 1990 Geo Metro. One thing I also didn't mention that I should have is since it did have a three cylinder engine the car didn't have a lot of power. Obviously how much power are you going to get out of a three cylinder engine anyway? But the miles per gallon were unbeatable on this car.
If you want power, buy a bigger car! Chevy screwed the Geo when they gave it more power. A 4 cylinder automatic has poor mileage, and it is difficult to work on it when your hand can't fit (because of the extra cylinder).