The average.On the average readout or the live readout? We frequently see 99mpg on the live, but the average is much lower.
A lot of my driving is done on the motorway and duel carriageways such as the A1(M) and the A19. To be fair I drive the car frugally between 55 and 60mph. I tend not to accelerate harshly, I do all the things to mitigate fuel consumption such as gradual deceleration where possible. I drive 23 miles to work each day on motorway, there and back. Yes at 55mph it takes me a couple of extra minutes to get home. But the savings in my pocket each month are BIG and real.Crikey, that's some figure! I'm guessing you do much less town driving than ours gets!
In my car I have an A6 notebook in which I keep records of all fuel purchased, together with the date and the odometer reading. Every month I then use Excel to plot graphs of fuel consumption against date and odometer reading. I do it just out of interest, not because I'm obsessed with driving economically. Fuel consumption is affected by the weather/season as well as the journey pattern and driving style.Do you track the fuel usage on any websites?