I used to sell a lot of new Volvo parts back when I managed a parts store.
The diesel Volvo, with proper care, is a reliable motor.
With it's aluminum head even slight overheating can lead to a cracked/warped head, keeping engine cool goes a long way.

It doesn't take abuse like a old B20 4cyl Volvo engine.

People love them or hate them.

I would find a shop that has worked with these cars. A good tech will make ownership a joy. A parts changer will make you wish you never heard of a diesel Volvo.

Good luck.