Looking at buying a 159sw this year and will be shipping 3 to 4 kids about in it most days so my question is do they have plenty of room? The 159 will Defo be a diesel.
I've also two Maxi-cosi in the back and my slim 11 year old boy can just about fit between them in the back, though he has to go in before the seat and its defo not comfortable for a long journey.I doubt very much that I'd get an extra car seat between our two. I think it depends a LOT on which car seats you have. We have a group 1 Maxi-Cosi Priorifix (Isofix) and it protudes into the middle seat. I'd suggest non-ISOfix seats allow you to fit them slightly closer to the doors thus allowing room in the middle.