2 posts tagged “mpg”

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Prius Year in Review (2008)

Jan 5, 2009
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Another year of statistics is in the books for the Prius. Nothing much out of the ordinary from previous posts, except it's interesting seeing how quickly the price of gas fell and I didn't have any fillups during the month of September.

The table has a bunch of statistics for the life of the car and then shows the trend over the last 90, 180, and 365 days. Savings comparisons are approximate (I'm calculating based on averages and I'm not sure it's accurate). Pretty charts are below.

	Lifetime	Last 90	Last 180	Last 365
Number of Days in Service	1852	90	180	365
Number of Fillups	129	6	12	28
Miles	46130.1	2107.9	4343.8	9896.2
Gallons	1003.4	46.2	93.1	219.7
Cost	$ 2,558.10	$ 96.01	$ 264.94	$ 685.00
Avg. Days between Fillups	14.4	15.0	15.0	13.0
Avg. Gallons per Fillup	7.78	7.71	7.76	7.85
Avg. Gallons per Day	0.54	0.51	0.52	0.60
Avg. Miles per Tank	357.6	351.3	362.0	353.4
Avg. Miles per Day	24.9	23.4	24.1	27.1
Avg. Cost per Gallon	$ 2.55	$ 2.08	$ 2.84	$ 3.12
Avg. Cost per Mile	$ 0.0555	$ 0.0455	$ 0.0610	$ 0.0692
Avg. Cost per Day	$ 1.38	$ 1.07	$ 1.47	$ 1.88
Avg. MPG	46.0	45.6	46.6	45.0
Avg. Estimated MPG	46.5	46.3	47.1	45.7
Avg. Daily Temperature	50.5	43.0	56.1	52.1
Savings vs. 25 MPG	$2,146.31	$ 79.06	$ 229.37	$ 548.98
Savings vs. 30 MPG	$1,362.24	$ 49.88	$ 146.98	$ 343.32
Savings vs. 35 MPG	$ 802.19	$ 29.04	$ 88.14	$ 196.42
Savings vs. 40 MPG	$ 382.16	$ 13.41	$ 44.00	$ 86.24

Prius MPG for 2008

Prius Lifetime Average MPG by Month

Prius MPG Distribution

Gas Prices

Prius mid-year statistics for 2008

Jun 29, 2008
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Another six months of Prius statistics is in the books. I've changed my work commute to mostly public transportation, which has significantly decreased my average miles per day. The table below shows a bunch of statistics for the life of the car compared to the last 90, 180, and 365 days of service.

	Lifetime	Last 90	Last 180	Last 365
Number of Days in Service	1662	90	180	365
Number of Fillups	117	7	17	44
Miles	41786.3	2667.5	5886.1	16257.0
Gallons	910.2	56.7	134.4	346.7
Cost	$ 2,293.16	$ 210.21	$ 443.31	$ 1,032.66
Avg. Days between Fillups	14.2	12.9	10.6	8.3
Avg. Gallons per Fillup	7.78	8.10	7.90	7.88
Avg. Gallons per Day	0.55	0.63	0.75	0.95
Avg. Miles per Tank	357.1	381.1	346.2	369.5
Avg. Miles per Day	25.1	29.6	32.7	44.5
Avg. Cost per Gallon	$ 2.52	$ 3.71	$ 3.30	$ 2.98
Avg. Cost per Mile	$ 0.0549	$ 0.0788	$ 0.0753	$ 0.0635
Avg. Cost per Day	$ 1.38	$ 2.34	$ 2.46	$ 2.83
Avg. MPG	45.9	47.0	43.8	46.9
Avg. Estimated MPG	46.5	48.1	44.6	47.5
Avg. Daily Temperature	49.8	59.0	46.6	51.1

With the rising cost of gas, I was wondering the savings of owning a Prius versus cars that got lower gas mileage. Here are calculations of savings for the entire 4.5 years of ownership: