Hey Fruit, everyone will have a different opinion according to their history. Carfax is good, also "whatever" your choice of car is,when you are serious about buying - take it to a reputable shop and have it checked out, alot of times they won't even charge you cause they are hoping to get your future business.
They will always come up with something (after all it is a used car)so don't freik out just have them tell you how serious and how much it is to fix----you can weigh the repair costs with the KBB to determine if it's a fair deal and also use it to negotiate the price down on the car! If the sellar doesn't want to let you have it checked out RUN FROM IT LIKE FORREST GUMP!