Hi and welcome,
Isofix is standard and will be there, just not easily visible. They are between the rear back and seat cushions, with one set on each side. To find them; put the two outer rear seat belts in position, push your hand deep between the cushions and slide your hand back and forth where the seatbelts show the passenger would be sitting. The fixings simply feel like flattened rings. I have been using the fixings in my B-Maxes since I got the first one. They can be a bit fiddly, but worth the effort for the safety they provide.
As an aside, there are also fixings behind the seat for those child seats which have an additional top strap to give even more stability.
Good driving and remember 'No we're not there yet, we've only just left home!
'
Cheers,
Geri
Edited by: Geriatricus