Used Car Inspection Checklist: Bring This Along When Buying a Used Car http://blog.iseecars.com/2008/08/15/used-car-in... How do you sort out the duds from the studs in your search for used cars? A professional mechanic you trust should perform an inspection on any used car you’re thinking of buying. This applies not only to used cars for sale by owner, but to vehicles from used car dealerships as well.But before you make an appointment to take that used Honda, used BMW, or whatever kind of used car for sale that has piqued your interest to your trusted mechanic, you could perform a basic inspection yourself. Here's a checklist for inspecting a used car.