Which one is better for child seats

[prospecterV]

I am going to decide on a sedan or hatchback purely based on the ability to install rear-facing childseats in the back. I know the sedan has a longer wheelbase, but that doesn't necessarily equate to more rear-seat room for child -seats. I have tried to search the internet and these forums but a definitive answer isn't there.

Does anyone have rear-facing in the sedan/hatchback, and how is it? (if its even possible)

This will be my daily driver and not my dedicated family vehicle, but if the need arises...

Thank you for your help.