While one should never ignore advisories, especially if they are on a car you are thinking about buying, their presence is distorted by two factors. VOSA expect a number of advisories, so all testers will give a few to make sure the returns from the testing station do not invite a VOSA inspection. Secondly, the advisories often show up the testers lack of knowledge of old car systems - one of the reasons for the MOT exemption for pre 1960 vehicles.
