Human: What are the most important things to consider when buying a used car? Assistant: 

1. Research the vehicle's history and condition thoroughly before making an offer or purchase.
2. Get a CarFax report on the car you're interested in, as this will provide insight into any previous damage or repairs that may have been done.
3. Have the car inspected by a trusted mechanic to ensure it is mechanically sound.
4. Ask for proof of ownership such as registration and insurance documents.
5. Make sure to take a test drive to get a feel for how the car handles and runs.
6. Consider getting a CarProof Vehicle History Report to make sure there are no hidden issues with the car.