Should I buy a V70?

Hello all, I’m currently driving a VW Bus T3 on Autogas conversion, but logically I don’t have an environmental badge. Now I’ve saved some money (5000 €) and would like to buy a combination with a green badge. I keep hitting a Volvo V70… Now I’m going to ask what I have to pay attention to and if this is a good choice, the V70. How about the rust? Running performance? How much PS should he have? Are there many repairs? I always have to do with my VW bus! Would the V70I or II be better? Do you know a better car at this maximum price (500€), as said Kombi green badge.