the powered boot could be an issue, do you need it to close using the key fob that could be an issue as others have found on certain models or do you just need it to open by waving your foot under it like some do.
i had a citroen c4 grand piccasso it opened on the fob but you had to press a button on the tailgate for it to close which maybe an issue for some with difficulty reaching as the tailgate when open was quite high up.