Nice write-up as usual Andrew. Always a pleasure reading your stuff.
Not that it would ever make me buy a Merc with Opamatik and red seats (my other half would kill me anyway), but it's a nice enough car. Driven in lots as a taxi passenger over here and they're nice and comfy.
Great fuel consumption too. I've only got my 330d to 40mpg when I drive like grandad, but then (see above Opamatik) maybe you do...
Are you going to remap it ?