Rounding out the ten popular used cars to avoid is the Subaru Impreza sedan. This car has high costs all-around. Maintenance costs alone are going to do you in, and that's before you look at how much fuelling this thing up is going to cost. The Impreza has some of the highest costs on this list, and the one that will hurt the most is repairs. As always, it's important to keep your car in good repair so you don't have to worry about the added expenses it will cost you to fix it. But in the event that something does happen, this alone will have you questioning your decision to purchase this vehicle.