User Manual > FAQ > Statistics
How are the statistics calculated?
Consider the following three fill-ups:
| Date | Odometer | Amount | Full? |
|---|---|---|---|
| Jan 1 | 1500 mi. | 25 gal. | Yes |
| Jan 15 | 1950 mi. | 20 gal. | Yes |
| Jan 25 | 2505 mi. | 28 gal. | Yes |
Between Jan 1 and Jan 15, you travelled 450 miles (1950 - 1500) and consumed 20 gallons of fuel (the amount of fuel it took to re-fill the tank). Therefore, your fuel economy for that time period is 450/20 = 22.5 MPG.
Similarly, between Jan 15 and Jan 25 you travelled 555 miles (2505 - 1950) and consumed 28 gallons of fuel. Your fuel economy for that time period is 555/28 = 19.7 MPG.
This calculation requires that you fill your tank. When you don’t fill your tank the software will not know exactly how much fuel you’ve consumed since the last fill.