Well, popped over to my Dad's at lunchtime in the "R" (about 9 miles each way), 7 miles of motorway and 2 of 50 mph A roads.
As the motorway was really busy (Friday afternoon traffic), I could only do 55-60 mph. Again the "R" really surprised me with an overall return of 42 mpg. Don't get me wrong, I'm sure if I'd have been tanking it it would have been well below 30
Not sure if this "R" isn't part diesel
Also, that's a good point Joe, I'll have to try it in Eco mode tonight with the free wheeling to see what's the best I can get before I destroy the dealers fuel tank over the weekend