I have a 9 year old...an 11 year old and a 4 month old and they all fit fine in the XR6T. Having said that my Mrs has an X-Trail and if we go away that has more space in the back for strollers etc. If you only have the one on the way then you have more than enough room. And congrats, you will be blown away when you see that little you for the first time. No matter how many people tell you, I promise you wont be prepared for how good it is. You get some spew on the seat..... Clean it. Trust me its better than a sh*tty nappy