How does this help you at all when buying used? The number of 15 year old cars with maintenance records at all is abysmally small. And usually it’s an enthusiast car that’s not gonna be reliable anyway. Being on top of tire pressure and oil changes is definitely not nearly enough to keep a car maintained for 15 years. It really sounds like you’re not familiar enough with cars and just have a contrived idealistic view of the car market.
This is not the fundental attribution error. The fundamental attribution error is seeing an action from a person and assuming it is a fundamental attribute of them. Literally in the name. E.g. you seem someone being rude in public so you assume they are a rude person. Meanwhile if you are rude in public you chalk it up to being in a bad mood as a result of something that happened to you, not because you are a rude person.