Nowadays in the UK when at car passes its MOT (which is a measure of its condition and roadworthiness) there is a section which says whether or not an advisory note has been issued.

If you are looking at buying secondhand and you see this on the certificate..

Top Tip:

always ask to see the advisory note. This will show all the points that the mechanic, on inspecting the car, feels need attention over the next year of the car. Study this closely, for it is a very good indicator of whats going to need fixing and therefore how much it will cost to keep it roadworthy. If they refuse to show it or say they dont have it, politely decline to buy.

Also check the advisory note has the same car details as the MOT and the car you are looking at