V70 2.4 163 PS opinion of experts

Hello dear community, I just opened up here and look for your opinion about a used V70 2.4 163 HP Black Edition. The vehicle has an EZ 03/2004 and about 31000km down. What do you have to look at or take a closer look at? Is such a purchase at the moment (Particle filter drama ) advisable? Did the vehicle test and did not find the engine bad. What does such a machine need on average? It was striking for me that the suspensions of the exhaust system (a kind of round iron ) already were very rusty?? So, let’s hear from you! Greetings from ER Lalla at the moment. Saab 900S