Quote:
Originally Posted by d1saster
Are you using the car’s MPG or calculated? The car’s BC has a correction factor which most probably is off.
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One of the few knocks against my particular TDI model was that it had zilch for onboard computer hardware, not even outside temp. So I had to do the tank-fill manual calculation every time for over that decade (nuts for an eco car). It feels like a luxury having that info on my X1 now.
So I am relying on the trip computer, mostly. I did try the correlation experiment early on with the X1, where it gave me even worse mpg than the trip computer.
But good point... I should try the experiment again at my next few fill ups.