Fuel stats
Since I bought my Prius last February, I've been keeping all of my gas receipts and on each one I mark the mileage. I now have a bunch of stats that are likely only of interest to me.
Start time: 2009-02-09
End time: 2009-07-10
Duration: 516 days
Mile traveled: 18467
Fill ups: 43
Total gallons: 417.982
Total Money spent on gas: $1,364.82
Fuel cost per day: $2.65
Gallons per day: 0.81
Overall MPH: 1.49
Numerical Mean of weighted zipcodes of fill ups: 82881.954 (Northern Wyoming if it existed.)
Numerical Mean of unique zipcodes of fill ups: 76775.916 (West/Central Texas if it existed.)
Mean miles per day: 35
Mean miles between fill ups: 429.47
Max miles between fill ups: 550 [1]
Min miles between fill ups: 341 [2]
Mean days between fill ups: 12
Min days between fill ups: 5 hours [3]
Max days between fill ups: 46 days [4]
Mean per gallon paid: $3.27
Max per gallon paid: $4.559 [5]
Min per gallon paid: $1.799 [6]
Mean gallons per fill: 9.50
Max gallons per fill: 12.047 [7]
Min gallons per fill: 7.829 [8]
MPG, method one. (current mileage - previous mileage) / current gallons added
Mean miles per gallon: 44.25
Max miles per gallon: 49.52 [9]
Min miles per gallon: 38.43 [10]
MPG, method two. (current mileage - previous mileage) / previous gallons added
Mean miles per gallon: 44.48
Max miles per gallon: 53.9 [12]
Min miles per gallon: 34.4 [13]
MPG, method three. Total miles / total gallons.
44.26
Footnotes:
[1] This was the segment of the PIT -> SJC drive from a truck stop in Tennessee to Mesquite, TX on 2008-08-04.
[2] This was 2009-02-16 through 2009-03-13. I don't remember anything specific during that time. It might have been when I realized my tires were under-inflated. I was also out of town during 2 weeks of this period.
[3] Part of the PIT -> SJC drive on 2008-08-05. This was also the only time I've ever run out of gas. It was just outside of Lordsburg, New Mexico. I coasted into the gas station. Based on some calculations I'm not going to post, this is also the fastest average speed.
[4] 2008-05-25 through 2008-07-11. I was in Pittsburgh at this time and my car was mostly parked. Those dates are also the only times I filled up during my stay in Pittsburgh.
[5] 2008-08-06 in Blythe, Ca. My first stop upon returning to California after spending the summer in Pittsburgh. Welcome home.
[6] 2008-12-05 in Campbell, Ca. This excludes the initial tank that came with the car which I record as $0.
[7] 2008-05-08. Part of the SJC -> PIT drive. Waynesville, MO -> Eaton, OH. I'm positive I over filled because the bladder in the tank spit gas back out at me.
[8] 2009-03-13. In Campbell. No good reason.
[9] 2008-05-06. Part of the SJC -> PIT drive. Flagstaff, Az -> Tucumcari, NM.
[10] 2008-05-08. Part of the SJC -> PIT drive. Waynesville, MO -> Eaton, OH [11]
[11] With the min and max so close together in days, I think there is something odd happening with the math, or maybe the Prius batteries were used a lot get the max, but I paid for it shortly after.
[12] 2009-03-13 through 2009-03-21. Might be right after I added air to my tires. See [2].
[13] 2008-08-06. Part of PIT -> SCJ. Blythe, Ca -> Lost Hill, Ca
Start time: 2009-02-09
End time: 2009-07-10
Duration: 516 days
Mile traveled: 18467
Fill ups: 43
Total gallons: 417.982
Total Money spent on gas: $1,364.82
Fuel cost per day: $2.65
Gallons per day: 0.81
Overall MPH: 1.49
Numerical Mean of weighted zipcodes of fill ups: 82881.954 (Northern Wyoming if it existed.)
Numerical Mean of unique zipcodes of fill ups: 76775.916 (West/Central Texas if it existed.)
Mean miles per day: 35
Mean miles between fill ups: 429.47
Max miles between fill ups: 550 [1]
Min miles between fill ups: 341 [2]
Mean days between fill ups: 12
Min days between fill ups: 5 hours [3]
Max days between fill ups: 46 days [4]
Mean per gallon paid: $3.27
Max per gallon paid: $4.559 [5]
Min per gallon paid: $1.799 [6]
Mean gallons per fill: 9.50
Max gallons per fill: 12.047 [7]
Min gallons per fill: 7.829 [8]
MPG, method one. (current mileage - previous mileage) / current gallons added
Mean miles per gallon: 44.25
Max miles per gallon: 49.52 [9]
Min miles per gallon: 38.43 [10]
MPG, method two. (current mileage - previous mileage) / previous gallons added
Mean miles per gallon: 44.48
Max miles per gallon: 53.9 [12]
Min miles per gallon: 34.4 [13]
MPG, method three. Total miles / total gallons.
44.26
Footnotes:
[1] This was the segment of the PIT -> SJC drive from a truck stop in Tennessee to Mesquite, TX on 2008-08-04.
[2] This was 2009-02-16 through 2009-03-13. I don't remember anything specific during that time. It might have been when I realized my tires were under-inflated. I was also out of town during 2 weeks of this period.
[3] Part of the PIT -> SJC drive on 2008-08-05. This was also the only time I've ever run out of gas. It was just outside of Lordsburg, New Mexico. I coasted into the gas station. Based on some calculations I'm not going to post, this is also the fastest average speed.
[4] 2008-05-25 through 2008-07-11. I was in Pittsburgh at this time and my car was mostly parked. Those dates are also the only times I filled up during my stay in Pittsburgh.
[5] 2008-08-06 in Blythe, Ca. My first stop upon returning to California after spending the summer in Pittsburgh. Welcome home.
[6] 2008-12-05 in Campbell, Ca. This excludes the initial tank that came with the car which I record as $0.
[7] 2008-05-08. Part of the SJC -> PIT drive. Waynesville, MO -> Eaton, OH. I'm positive I over filled because the bladder in the tank spit gas back out at me.
[8] 2009-03-13. In Campbell. No good reason.
[9] 2008-05-06. Part of the SJC -> PIT drive. Flagstaff, Az -> Tucumcari, NM.
[10] 2008-05-08. Part of the SJC -> PIT drive. Waynesville, MO -> Eaton, OH [11]
[11] With the min and max so close together in days, I think there is something odd happening with the math, or maybe the Prius batteries were used a lot get the max, but I paid for it shortly after.
[12] 2009-03-13 through 2009-03-21. Might be right after I added air to my tires. See [2].
[13] 2008-08-06. Part of PIT -> SCJ. Blythe, Ca -> Lost Hill, Ca