I'd advise against it.
I've had mine since my boy was about 15 months, he's now 2 and it still is perfectly suitable for him.
There's plenty of space for pushchairs, nursery bags and all the other misc stuff. It also has the ISOFIX bars is as safe a place as you're going to find for your most treasured bambino.
I fit two adults in back beside him without too much fuss.
Also, as they get older they love the car - my boy is obsessed with it - he laso locks the car by pressing the handles :)