if you suspect prior damage check the folllowing:

rear fender to rear door gap
rear door to front door gap
front fender to fornt door gap
hood to fender gap
overspray on lights
missing factory tags( i.e. tire pressure, coolant recomendation, etc.)
and finally a slight missmatch of paint between metal panels. pastic
panels do not count as usually they are paint some where else and
generally do not match factory color.