Why it's on the list: Depreciation; Fuel; InsuranceThe next car on our list isn't even in production anymore, but if you want to buy it used, you have to watch out for these three money pits associated with the car. The Mitsubishi Eclipse Spyder depreciates quickly over time, and whenever you need to fill up at the pump, make sure you're aware that it might hurt your wallet, especially with today's gas prices. But what is really going to get you is the insurance cost. It has one of the most expensive insurance costs on the list, and for good reason. This little coupe is fast, and as it is more sporty than most, it comes with a higher premium.