<human>:  I'm looking at a used vehicle and I want to know if the mileage is worth it, what should I look out for before making a purchase?
<bot>: You should look for signs of wear and tear that indicate the vehicle has been driven for a long period of time and has incurred a lot of mileage. Look for rust, signs of oil leakage, tire wear and tear, worn out shocks, and so on. Check the service records of the vehicle as well to get an idea of how well the car has been maintained in the past. Also, take a good look at the engine, transmission, and other major parts to ensure they are all in working order. Finally, take the car for a test drive to see if it runs smoothly and feels like an overall reliable purchase.