hi guys just picked up a 57 plate 1.2 punto for my daughter(first car) and ive just noticed that theres water in the spare wheel well and some damp marks in the top corner rear passenger side of the roof. has anyone had this fault before and if so how can i fix it, Also the only other fault with it is the exhaust blowing from by the sounds of it engine side. are these expensive to replace the whole exhaust