I have a citroen C2 which has a much smaller boot than a Corsa and I found the only thing that would fit in my car was the Mamas & Papas Skate which is compatible with the Prima Viaggio Car seat!
https://www.mamasandpapas.co.uk/skate/the_complete_package.php
Hope this help xxxx:thumpup::thumpup:
What's the Skate like off road/Over bumps?