Why it's on the list: Fuel; Used Price; Repairs
The BMW 3 Series Sedan kicks off the BMW section of the list. The first thing that will cost you more than it should is the used price. Although these cars depreciate as soon as they drive off the lot, their value doesn't drop as much as you might think, or hope. Next up is how much you'll be spending on fuel. This car takes premium gasoline, so don't think you can skimp and get regular. You'll see performance issues, which leads to the third and most costly reason this car shouldn't be on your list. Repairs alone will put you in a pinch, so if you can't afford to cover all these expenses, it would be best to move on.