Once a car leaves a dealer's lot, its resale value starts to decrease. There are a few key factors that determine resale value, according to experts at Black Book and Vincentric, two companies in the used-car valuation business. They are
Age, which automatically decreases a car's resale value with each passing year.
Mileage affects value if it's higher or lower than the average for your car. Extremely low mileage can affect a car's value, too, as it may hint at a…