Saab 9-5 Kombi – Which engine?

Hello Together, due to upcoming offspring, the purchase of a station wagon is planned. Since Saab is to be kept true, a 9-5 would be considered (Father drives 9-3 sports combi, but I find it too small in the rear). However, one reads with horror that the 3.0 TID engine is not exactly reliable. Therefore probably also the many relatively inexpensive used car offers. However, it does not necessarily have to be a diesel, but would be nice. Which engine is recommended as diesel? ll petrol engines robust, or is there also a type of which you should better leave your hands on? What is your opinion? I am grateful for every hint! Best regards Aluauto P.S. It should be already a used car (price advantage)