What should a thorough pre-purchase inspection include for a 2018 sedan from a priva

[GeorgeOB]

I'm in the process of buying my first used car from a private seller, a 2018 sedan with about 60,000 miles, and I want to be as thorough as possible before handing over any money. I've looked up generic pre-purchase inspection checklists online, but I'm worried I'll miss something specific to this make and model or not know what certain engine sounds or visual cues actually mean. For experienced buyers or mechanics, what are the absolute must-check items on your personal pre-purchase inspection checklist beyond the obvious tire tread and fluid levels? Should I insist on a compression test for a car of this age, and what are the red flags that would make you walk away immediately, even if the price seems good?