I'm getting low to mid 30's on my 17 mile comute which is mainly A roadster and dual cabbageway. A bit more stop start on the way home at the islands...

I have seen it creep up to 42 while going through miles of 50mph motorway roadworks back along.

2011 SD4

26mpg around town
2010 Tde

With the increase in bio in diesel all mpg will drop, I always wondered why I could never achieve 40 mpg in France when travelling at the same speed as in the UK , then it clicked, France used more bio in their diesel which has a lower calorific value than pure oil produced diesel so you use more fuel to attain the same speed. [/img] my PC is slightly to the right of Genghis
2012 HSE SD4 In Orkney Grey now gone, best car ever.

Just got back from Abergavenny, surprised to see petrol AND Diesel being sold at the Morrisons Esso filling station for about £135p/litre.

10p cheaper than home. FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 74k+ miles) (MY2015)

Likewise, I’ve just returned from Banchory, which is very rural near Balmoral Estate and diesel there £1.34! Whereas back home in Perth £1.43.