19th Jan 2026, 18:02
Not miles per tank as your tank is never empty when you fill. Miles between fill up is better and more accurate. Always reset the ODO and completely fill up.
Not miles per tank as your tank is never empty when you fill. Miles between fill up is better and more accurate. Always reset the ODO and completely fill up.
15th Oct 2013, 13:37
Miles per tank won't be very accurate, as there will be an error due to the reserve amount once the fuel light is on or the gauge is on empty. Better use the displacement method. Fill the tank only to the point that the nozzle shuts off by itself, zero the odometer, drive however long (say, a week or the next time you fill up), then fill it again until the nozzle kicks the pump off. Note how many litres/gallons were used between fill-ups, and divide the mileage by the amount of gas used (yielding MPG or km/L). I find that my trip computer is a tad optimistic.