Advice for buyers
What should I look for in a used Citroën C8 MPV?
The electrically operated sliding rear doors have been known to give trouble and there have been a couple of recalls to check for potential problems. It's unlikely that the C8 you're looking at will have iffy rear doors, but it's still worth checking. The problem is nearly always electrical.
Premature or uneven tyre wear afflicts some models, so inspect the tyres carefully. Be especially vigilant if the C8 has 15-inch wheels, since these seem more prone to scrubbing off the rubber.