Things I check when looking at a (newish) car.
books : service history, any major repairs, make sure any/all recalls are done, who was prior owner (fleet, private etc)
Signs of impact damage
Mechanical issues
Flood or hail damage.
(Hail is easy as a panel will never be the same, roof in particular. Flood generally by under the carpet. Behind sill panels, radiator, plugs, and under center console.)
Lol and make sure everything works as it should.
missed a few on my last car due to flying in so late, Never again lol.
feel free to add any for me to do guys.
Cheers
Evo