9-5 2,3T Aero /used – Buy or not?! (e.g. engine..)

Had actually needed to buy the 9-5 2.3 Turbo Aero before me. It has 87′ km on it. Never heard great about engine damage until here in the forum. But now the threads have made me VERY unsure, since with Saab often a motor damage occurs?! Is this actually like this or only on certain models? DO YOU REPLY THE DANK!!