hello
Buying a Porsche Cayenne is good. it is one of the toughest car as that of Range Rover and Audi. but, same as it comes with a high price its maintenance is also little bit high too. i also brought an expensive car (Range Rover Sports). as per my experience i take her to Al Fardan for only major issues. (Warning symbol came in my dashboard) otherwise like routine thing like oil change, minor issues i take her to normal places like Waqod and shops in Al Sana ya or Barwa village. besides all that i know somewhat about vehicles.
if you are ready to do like that. i will say you can buy a Porsche.
however if you are going to buy a used car for a cheap price you have to ask for its previous record and you should take for a vehicle inspection in Porsche service center they can tell its in good condition or not. then you decide to buy any of the Porsche.
Drive Safely and Enjoy the Driving.. and if i said something wrong hmm... forgive it :)

Thanks Alisa..