Quote:
Originally Posted by n55x3
I definitely take the computer's estimate with a grain of salt but I equally take the manual calculation numbers with that same grain of salt. The manual calculation works if it is always you filling the vehicle up at same temps, exact same gas station and exact same pump, etc. Some pumps shut off sooner, some later.
Honestly, the only way manual calcs can be very accurate if you only ever put in the exact same volume after each fill up. Say you put in exactly 10 gallons every time then that is a repeatable controlled variable that stays constant. I'm too lazy to do that though. I just top it off every time to maximize the time I spent away from said gas station.
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I doubt the variables you cite would "move the needle" much at all.
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2013 x35i (Space Gray, MSport, CW/CWII, DHP, Premium, Premium Sound, Technology, BMW-Apps)
Retired: '09 C300 4Matic, '09 GTI, '06 750i, '05 C55, '04 R32, '03 M5, '02 GTI, '01 M5, '00 M-Coupe, '00 540i/6, '99 M3 Coupe, '98 M3 Coupe, '96 328i,... '86 4000 CS Quattro... too many to list.