Scott3:
Regarding The Outlander PHEV, the battery health on them, can be highly variable. Some seem to degrade slowly, and some concerning fast. Generally their reputation for battery health is pretty bad. You definitely would want to scan your prospective purchase to check the battery health.
However I see this as a massive advantage buying used.
If you buy new you don't know if your battery will live forever or prematurely give up.
If you buy second hand you can easily scan and find out which group the car belongs to.
If you are lucky you find an immortal battery and that's the car I'd buy.