Question about Legacy 3.0R AWD

Hello, I saw a Legacy 3.0R AWD at a dealer’s shop today, which I find quite appealing:http://www.autoscout24.ch/…/Detail.aspx?… What can you tell me about the Lagecy? What about the reliability, engine, automaic transmissions. What should be paid attention to when driving the test drive and when buying? Perhaps the vintage has well-known flaws? And it’s also important to me what to keep from the offer ) Thank you very much for your help in advance. Ciao and Gruss, Tom