<human>:  What are the most important things to consider when buying a used car?
<bot>: The most important things to consider when buying a used car are: 1) the vehicle's history and condition; 2) the car's features and amenities; 3) its reliability and safety ratings; 4) its total cost of ownership; 5) the advice of trusted mechanics or friends; 6) the availability of warranty coverage; and 7) the resale value of the car.