Is there an easy way to check if the cambelt has been changed.
Not really if you have no history, try Renault for the history first. If you have no joy with the history get it checked by someone qualified. It's expensive if it breaks.
Also they are a bit noisy on accelaration but a mate has a 1.4 version and he said it was normal, is that right?
Mine was the 2.0 4x4, but yes they can be a little noisy when pushed.