I’ve got a 2006 Volvo XC70, my 58cm road bike and 19” dadbike MTB both fit inside wheels-on.
I looked at a Superb, but the sloping rear and lack of flat folding seats were real turn-offs. Why does no one, not even Volvo, make slab-ended estates anymore?
My dad had a superb estate the boot was huge, easily big enough to get my 56cm road bike in one go.
He also had a Passat for a bit which was decent too
Volvo V70/XC70 surely worth a look too.
We have a legacy outback which also has a huge boot