There are the obvious considerations that Consumer Reports reviews: gas mileage, safety, reliability, and cost (which are all very important to me). But I also was looking for other things...like:
* adequate trunk space (for strollers, diaper bags, and floppy seats)
* a flat space for diaper changing
* lots of leg room in the back seat (where new moms often sit after baby is born)
Enter Mother Proof, a site "dedicated to providing women in general and mothers in particular with useful and entertaining new-car reviews." Check it out!