Cayenne Turbo 2002 - Any drawbacks in comparison to 2003 and newer models
 

I am writing from Moscow, Russian Federation.
I was planning to buy an 2003 or 2004 Cayenne S. However when i saw a Cayenne Turbo at the local Porsche dealer which is cheaper than 2003 Cayenne S i decided to choose this variant.
Since the car has gone through diagnostics and currently being traded by official Porsche dealer i have the guarantee that when i buy it there wont be any existing technical problems.
The car looks very clean. Has all the optional features which were teorotically available in 2002.(Sinceit was initially configured to take part in an exhibition)Has run 98000km and serviced on regular basis.
However i am feelingsuspicious since i think that this car shouldnt normaly cost cheaper than a 2003 Cayenne S.
When i asked the reason i was told that since it was producedat the beginning of Cayennehistory there might be some problems of production which were possibily eleminated till2003 model.
I would appreciate if anybody in this forum could tell me any drawbacks 2002 Cayennes have in comparison to 2003.
Thnx in advance for help!