No.
Pre 2006 models the bluetooth is an option, and you may require the purchase of this module, about £80 if I recall, depending on whether the previous owner has fitted one or not.
After 2006, it should be a standard fitment, but of course the previous owner may have had no use for it and sold it to someone with a 2005 modle for £80.
My advice would be to check first if you require this and haggle if necessary.