Saab 9-3 some question & purchase advice

Dear Saab drivers, until now always with VW on the road and quite satisfied, I liked the Saab 9-3 II as a combination already then. Now the question arises: What is to be observed with the 9-3 1.9ttid Sport Kombi? 1) Rust protection ok? 2) Engine life approx.? 3) Timing belt changing intervals? 4) Something special to consider with Saab, defects? 5) What does the spare parts supply look like – Saab has released similar much, like VW: i.e. I can use wholesalers like Matthies, Heil etc. a similar kind of Expect care? As an example for a Saab as he calls me:http://suchen.mobile.de/…/202212775.html?… Thank you in advance!