Be sure to do your homework if you're buying a pre-owned car.
Pre-owned cars are cheaper than new cars,
but they might come with unknown problems.
It's best to look online and elsewhere to read as much as you can to learn about the car and determine the value of the car.
Also, you should have a mechanic test it before you might want to get a warranty on it.
But if you buy from a private owner,
make sure that they have all of the paperwork showing regular maintenance throughout their ownership.