The Buyers Guide also tells you to:

The Buyers Guide also tells you to:

Get all promises in writing;
Keep the Buyers Guide for reference after the sale;
Ask to have the car inspected by an independent mechanic before the purchase.
Buying a car from a private individual is different from buying from a dealer. That’s because private sales generally aren’t covered by the Used Car Rule, or by "implied warranties" of state law. A private sale probably will be "as-is";
you’ll have to pay for anything that goes wrong after the sale.

USED CARS AND PRICE GUIDE