The B235-based 9-5 models have suffered an abnormally high rate of engine failures due to engine oil sludge. This primarily affected the 1999-2002 models. SAAB refined the engine's positive crankcase ventilation system (PCV) for the 2003 and later model years, virtually alleviating the problem. Additionally, SAAB created update kits to retrofit to the 1999-2002 cars since they cannot be easily modified to accept the 2003 and later system. Mounting complaints by 9-5 owners forced GM to offer an 8 year warranty on the engine in 4 cylinder models, provided the owner can produce proof that they followed the manufacturer's oil change intervals.
...it was said that an all new 9-5 would be presented by the end of 2008, for the 2009 model year. Recent information however suggests that the current 9-5 will be replaced in 2009, for the 2010 model year. The new model will be based on GM's Epsilon 2 platform, shared with the next generation 9-3, and probably built in Ruesselsheim, Germany at the Opel plant.
Das bedeutet, ab 2010 sind die nichts mehr wert, was für einen Kauf dann spricht. Mir ist jedoch die Verwandschaft mit Opel zu groß, als daß ich mich dafür erwärmen könnte.