As a potential new-car buyer, you probably know that your biggest enemy is depreciation. This dark villain starts attacking your car the minute you drive it off the lot, siphoning away your hard-earned dollars by reducing the value of your vehicle. To help you outsmart this insidious nemesis, we've put together this list of the 10 cars likely to depreciate the least during ownership. Our list includes the percentage of its original value that each vehicle is likely to retain after five years with an annual mileage of 15,000. Our residual value percentages are based on each car's national True Market Value® (TMV) price, plus typical options and destination charge.