Re the capacity of A2s I presume that with a new baby the following might be helpful: I have put a large washing machine (new, in its box) into the back of the A2 with the seats folded, and it slide in with plenty to spare! I don't know where this 'there's no room for luggage' myth comes from as they are HUGE in comparison to most superminis (the A2 luggage space, not the baby).
My A2 has all the gizmo's like Stuarts space-floor-box and a seperate cover shelf that sits at the cill level in the very rear concealing the space where the spare wheel ought to be (mines previous owner forgot to take the no-cost option) It also has heated seats, dimming rear view mirror, full glass roof, 6 cd player (which means I cannot get a towbar....) and the real waste of time SAT NAV. Glad I bought it as a second user and the first guy took the hit.....
HOWEVER since I've had it I could have sold at least three to friends IF there was an automatic gearbox option. Why don't AUDI do a tiptronic for it as at the new price its mainly old men like me (not) that will be looking to buy new ones. And that's an 'automatic' market if ever there was one....