Saab 9-3 Aero to a Saab Diesel?

[Jonjo91]

I’ve currently got a 2003 9-3 aero HOT. 112k and still running beautifully, interior is immaculate and external is VGC for age and mileage.
Anway, my circumstances may change and I’m looking for a car that can tow a trailer, mainly for a motorbike or two. I think my current car will get a bit too thirsty for hauling my bikes around the country although I am averaging 30-32 MPG, with mindful driving.
Now I really do enjoy my 9-3, it’s the most comfortable car I’ve had and eats up the miles.

So, do I sell the Aero and get a similar age diesel version with the same interior (heated leather, cruise control etc etc) or should I just fit a tow bar to my aero?
What tow bar for the aero?
Which version diesel?

Thanks,