Unless it's leaking, it probably just needs to be topped off and that's normal in the winter for many cars as I'm doing it daily to cars at work (topped off once in a while that is). If you add coolant and it's low again soon, then I'd say chances are that it's leaking somewhere and you should see coolant on the floor where its parked.

As for other repairs, all cars have problems with many differant things as time/mileage goes on. Even new cars are plagued with problems from what I see. There is no perfect car made by anyone.