The car would have had its specification sticker under the boot carpet,  I have had 2 stuck onto the boot floor and 1 stuck on the spare wheel tray  Its a white paper thing about 7cm square.   I had 1 car wher it was loose in the document pack.  AT the time i didnt think it had any use and chucked it away. Not that its easy to make out what is fitted from just series of numbers printed on it.  A dealer parts man would be able to interpret though if you can find it.  From A3jeroens post it seems you may well not ever even have had one.  Its a Fiat.  They cant even supply the engine stated on the delivery note so options info is a bit of a stretch and Im not sure if I would believe it anyway!  My present Panda had a pile of options fitted as it was a factory order  If I can find the sticker I will take a pic.  Most are just as delivered I suspect.  The dealers can look up your car and tell you what extras it has fitted is you chat up the parts man.