One Car One Inspection informs you: When assessing used cars, it's crucial to thoroughly inspect the vehicle's condition and take a test drive. Good condition is practical, not just a matter of mileage numbers on the odometer. More mileage doesn't necessarily mean worse condition, and less mileage doesn't always equate to better condition, especially when you're aware of the existence of mileage rollback. The true condition of a used car can only be determined through careful inspection and actual test drives.