It's hard to say as it was only tried in the car briefly when I was at Mothercare. I sat my little one in it and even at his age (9months) his feet were close to the front seat when in recline - would have to move seat forward more. I didn't expect anything less though as space is limited and put it down to one of the things you have to live with when you have kids and minis!
Maybe compare them side by side in Mothercare or similar?
My car is non Isofix, not heard of the Jane Indy Plus. Let me know how you get on as I won't be buying one for a month or so.
