I agree, I can reach 100% going down a hill and usually it hardly ever goes below 30%, maybe averaging around 40% to 70%.
Climate Control is on Auto permanently, set to 19c
I just wonder whether when driving in B mode, your giving the car a chance for B mode to work.
By that I mean when approaching a normal junction/stop, let the regeneration do the braking and only use the foot brake for the last few yards. Almost 1 pedal motoring !
I accept that it takes a bit of practice, but it does work. My mpg over the last tankful is 70.5 and as total mileage increases it seems to be getting better.