i dnt like the seats in the back of ours if the car seats are strapped in you can not move the bench forward to bring up the back two.
also (silly little thing i know) theres no cup holders in the back for the girls drinks, or a socket for thier dvd players, in my opinion there are better cars out there, just got to find the right one for me.
My back seats have cup holders, must be cos mine is the Z range prior to Zafira B they done a bit of a face lift, silver goes all the way round the front grill is another one but still pretty much same car
Am not one for chopping and changing my cars so the car seat issue would not always be a problem once the child is about 3 then its onto a booster seat or something
Have you seen the Citreon C4 Picasso, they make the Zaffi look like a mini, not sure id'e get used to the speed dials being central on the dash though