Given DC2 is on the way we're looking at larger cars so that we have a chance of fitting the 4 of us and luggage for a weekend away in without using a roof box. There's masses of vehicles that would enable that with ease, but in very few of them would it be possible for a 3rd adult to travel in comfort - and for those where there is space to put the adult in, getting into the centre back seat would be a challenge. We're trying to decide whether to shorten our list to mini-MPVs so that we have more flexibility on seats, or whether its just unnecessary.
So - if you have a family of 2 adults & 2 DC, how easy do you find it put a 3rd adult into your car and/or do you just not want to?