We're gettin' us a baybee! And now its time to buy a car, obviously

In Switzerland, life seems a bit difficult if you have a baby and don't have a car.
From your experience, which car seems to be good for carrying around babies (in the back seat babyseat of course) and all the baby related stuff.
Incidentally, the wife should fit in as well, so a coupé or a cabriolet won't do.
I'm seeing a lot of VW polo used cars being sold around here. But someone told me that there is not enough room if you have a family which includes a baby. Is this true?
Would love to know your opinions!
Cheers,
Nileblitz