More Questions about the computer

The mileage computer is quite accurate, with most people finding it a touch optimistic (maybe a percent or two). Keep in mind that the average mileage is the average from the last time you reset it. Most people drive off the lot with a poor average. Make sure you reset yours if you want to see tank to tank averages, trip averages, or anything other than the total accumulated mileage.

As for improving your mileage, there are many excellent threads on this forum devoted to just that. Spend a little time reading and it will help.

Tom

 

I suspect that you haven't reset the MPG display since you purchased the car. This means that it is displaying the lifetime average.

Prior to this weekend:

3850 miles / 33.3 MPG = 115.62 gallons of gasoline used since purchase.


After this weekend:

50 miles at 55 mpg this weekend = 0.91 gallons of gasoline

3850 + 50 = 3900 total miles

115.62 gallons + 0.91 gallons = 116.53 total gallons

3900 miles / 116.53 gallons = 33.47 MPG (rounds up to 33.5 MPG)

So yes, If your lifetime average was 33.3 MPG and you drove this weekend at 55 MPG for approx 50 miles, then you should expect your lifetime average to display 33.5 MPG.

I use reset everytime I fill my tank so I know what my tank average is instead of my lifetime average. Then I enter the tank information into a spreadsheet (and into greenhybrid.com) to keep track of my lifetime average.