Advice on the purchase of a used XC90 (up to 20,000 €)

Hello Volvo community, I’ve always been driving VW/Audi and I might be thinking about buying an XC90 D5 instead of a used Touareg R5. However, since I’m totally inexperienced with Volvo, it would be nice if you would give me a few tips on what I have to pay attention to. Due to the price frame of about 20000 Euros (i.e. nix with MJ2006 and 185PS) the following vehicle will become (as clues) an XC90 D5 with 163hp and a mileage between 80000-140000 km MJ 2004/2005 with leather, Navi, Xenon What do you have to pay attention to, what problems the XC90 has at this age/running performance Thank you for your support … goose