From a financial standpoint, does it make sense to get rid of my car?

When it really comes down to it, it dosent matter how much milage your car has, its really about how well you maintain your car. If you get a Honda Civic with less mileage you are going to have to maintain the car, and any car you take care, will be good to you. I say stick with the Prius, you had it for such a long time, and mileage is just a number, 2004 wasnt that long ago.