How expensive is the maintenance of a Porsche Panamera Diesel?

I’m thinking of buying a preface lift Porsche Panamera Diesel(250hp). I’ve never had a car of my own and since I’m financially quite well after my successful school leaving and I live with my parents, I’d like to enjoy a small luxury. Of course I don’t want to throw the money out of the window and would like to ask: how expensive it would be for me (I’m 20 years old/young). My parents advise me a little bit from such an expensive car, since they don’t like to buy a car. he maintenance costs are high and I would use money for free. Has anyone had experiences with cars of similar price range or another suggestion/ advice? Have already asked in a “Forum” there are sums like 2000€-250€ a month fallen, for me personally a bit unrealistic, so I would like to ask here. Thanks for every answer! Sincerely 11qqaayy