As has already been said so many times...all this is your problem..no point blaming anyone but yourself. If you buy a car that has issues there is no way to prove that they were there when you bought it or wether the owner had any idea that those issues existed.
Some kid bought a car off me two years ago, called me a week later and said "hey mate, just wrapped the car around a poll" I told him tuff luck mate, and hung up...not my problem...
Moral of the story get independant checks done on the car you are interested in ..get one, two, three as many as it takes so you are satisfied of the outcome...
Klown stop being a.....errr Klown.. :sorcerer:
My Two Cents (plus tip)