This was from last weekend in my 35i. I drove from Wokingham, Berks up to Norwich, Norfolk for the weekend. I was in no rush so just cruised it both ways.
It’s about as high as I get. Normally it’s mid to low 20s.
Yes, your 17.5 mpg is at an average of 34.9 mph, which in reality is quite quick on B roads over the given 53 miles. That said, my global figure is 26.4 mpg at an average of 30.1 mph.
