Some years ago they had 3 height limits, the lowest being 1.48 metres(?). In those days we booked by phone, and for some reason they booked our old Renault Espace in as being within the lower band. It wasn't, and we had to go on standby. We were number 2 of 6, but they didn't load the standby vehicles in order and we ended up being left all alone on the dockside. As it happens we were taking a double mattress over to our cottage, and had visions of spending the night there, but we ended up being squeezed onto their freight ship, the Purbeck. That was an experience, especially going up & down on the lorry lift & being told that whatever we did, don't open the door! On balance, I think I would change the booking.