I will add as well, if you're just using the pram base and the car seat it is possible to get a 6 stone labrador in the boot too!
I'm not sure just how we are going to fair in a month or two when we are off to Dorset for a week with said labrador, two kids, full carry cot and a weeks worth of clothes and food but friends of my wife's have managed this with a little tiny corsa for a few years. I do think we'll be adding an ever so trendy collapsible roofbox though
I've had all sorts of cars since having our daughter including two Range Rover Vogues, an Audi A4 B7 estate and a Volvo Estate and to be fair once you factor a dog into the equation as well its still a struggle lugging all the gear about no matter how big the boot is, I'd personally say that the golf is just as well equipped to do the task as both of the smaller estates due to having a deep boot rather than a long shallow one.
Mike