Which used Citroën C8 MPV should I buy?
Simple - go for a diesel. The petrol 2.0 is cheaper, but it doesn't have the pulling power of the diesels and drinks fuel quicker - likewise the 2.2 petrol.
There are two excellent turbodiesels - a 110bhp 2.0 and a 130bhp 2.2. We prefer the 2.2 for its extra 24lb ft of muscle, and there's only a minimal penalty in fuel consumption. However, it will cost more, so the 2.0 HDI is a good second-best.
Most have seven seats (although some plusher models have six) and the electric sliding rear doors that are preferable if you have kids.
All models are stuffed with safety kit, and entry-level LX trim comes with climate control, power steering, electric front windows, remote locking and a CD player. However, we'd go for SX, which adds an alarm, electric rear windows and electrically adjustable seats.
If you want still more, Exclusive is plush and Exclusive CC is plushest, with leather seats.
You should have no problem tracking a good car down. Citroen dealers, supermarkets and MPV specialists all have a good choice.