Well these results are for the R, but I got higher for the 200 GT. ( upto 48mpg on my 150 mile drive home after buying it, but normally 41 - 44 mpg average )
I have tried the economical driving with a few foot to the floor overtakes ( that's the nice bit ) but generally I get back 39.1mpg average with 380 miles per tank with 35 miles range left.
I did get 43.4mpg on my last fill up , over 441 miles per tank with 21 miles range left.
No where near the 50 odd per galleon Peugeot states, and I have only filled up four times since buying, but my overall average on the trip since buying ( as I set the B trip for my ownership figures, as I don't often keep the car too long, and as others have noted the trip freezes at 10000km some 6213 miles ) is showing 39.1 smiles per galleon, which is pretty damned good for a performance car, even if I do say so myself !
:beer: