Tip for buying used:
Purchase while still under warranty from the new car dealer that carries the brand.
Why?
I used to work for a Chrysler dealer.
When we would get a low mileage vehicle they were probably better than new when they left our facility.
These vehicles would come in and us techs got to fix everything and anything wrong with them that was covered by warranty, no questions asked. We inspected them from stem to stern and some of them were good money makers for us. We would do anything to get a big engine job, that's one of the few things warranty paid a decent wage for. I don't mean like sabotoge, but if we heard an engine noise or felt something wasn't right, it got looked into with a microscope.
All recalls were done, and all the TSB's were searched for the possibility of more warranty work.
All the required maintenance was caught up and done using OEM products.
This is quite different than a private or non-dealer seller. Sure, they could bring the car to the dealer and tell them to keep it as long as they need to in order to fix every possible warranty defect found. But, as a former tech in a dealership, I can tell you they won't. I can also tell you they won't catch up on the maintenance using factory parts and products.
That's for full warranty vehicles.
Now, once the warranty runs out, the used car dept. got real fussy about what they were going to fix and what they weren't.
Oh, and the main reason people sold nearly new cars was usually because they got new ones every couple years, not because they didn't like the old ones.