How many miles do you do per year? How much is short trips rounds town
If you don’t do many miles then I wouldn’t recommend a diesel. The servicing costs are Higher and the engines are more complex and expensive to repair.
I’d avoid the Saab. It’s based on a 14 year old car and the world has moved on
Id be looking at
Octavia estate (golf based so a bit narrower than other cars with the same load space)
Mondeo estate
Focus estate
Mazda 6 estate
Seat exeo – based on the last a4 but not great for load space
Alfa 159 (because it looks niiice)
Would run a mile from anything with an electric parking brake and any vw group dsg (auto) gearbox.