In reply to Sheffield Sam:
Had a 140ps Caddy Maxi window van for 11 months & love it.
I've got an average of 43mpg over 16,000 miles.
Powerwise more than adequate for me; cruises effortlessly at motorway speeds.
Sleep 2 in the back on a bed platform and there's still loads of room for gear.
I don't think the 104ps does significantly more mpg