2010-06-03	397.4	6.048	$2.67	65.71	"Tank #1 Tank Dates: 5/22-6/3 (13 days) Avg. Temp: 78 degrees 389.0 miles (397.35 adjusted to match HSI) HSI: 65.7 mpg Fill: 64.3 mpg SGII: 66.7 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: Tires at 50 psi (44 psi rated tires). Working off dealer filled tank so may take another tank or two to get accurate fill & SGII figures. This tank was mostly city driving. Getting used to new car and various driving techniques that work in it compared to my 2009 Prius. Overall, it looks like higher mpg is possible from stock vehicle. ---Fill Stats--- Date: 6/3/10 Tank Miles (ODO): 389.0 Gallons Filled: 6.048"
2010-06-06	456	7.862	$2.69	58	"Tank #2 Tank Dates: 6/3-6/6 (4 days) Avg. Temp: 80 degrees 497.6 miles (456.0 adjusted to match HSI) HSI: 58.0 mpg Fill: 63.3 mpg SGII: 59.0 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: All highway from MA to PA. Mixed use of hypermiling and cruise control (mainly to see effects of both on mpg as I learn the new car). Possible tank error on fill mpg as usually calc'd mpg will be lower than HSI mpg...should correct itself upon next fill. ---Fill Stats--- Date: 6/6/10 Tank Miles (ODO): 497.6 Gallons Filled: 7.862"
2010-06-10	577.5	9.609	$2.67	60.1	"Tank #3 Tank Dates: 6/6-10 (5 days) Avg. Temp: 72 degrees 489.3 miles (577.5 adjusted to match HSI) HSI: 60.1 mpg Fill: 50.9 mpg SGII: 61.5 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: Mostly highway from PA to MA (last 100 miles of tank was city driving...rest was highway). Mixed use of hypermiling and cruise control during highway driving. Obvious tank fill error...off by way too much...hopefully will correct itself on next tank. Used A/C for some of the driving...does not show up in mpg but shows up in fill...could be reason for tank error. ---Fill Stats--- Date: 6/10/10 Tank Miles (ODO): 489.3 Gallons Filled: 9.609"
2010-06-23	506.9	7.822	$2.59	64.8	"Tank #4 Tank Dates: 6/10-23 (14 days) Avg. Temp: 76 degrees 495.1 miles (506.9 adjusted to match HSI) HSI: 64.8 mpg Fill: 63.3 mpg SGII: 52.8 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: Getting hang of driving both city and highway with improved results. Seeing routine 80 mpg commutes to work over 11 miles (65 mpg on return trip due to low to high elevation along route). Weather on this tank was tremendous...still trying to post 66+ mpg tanks...work in progress. ---Fill Stats--- Date: 6/23/10 Tank Miles (ODO): 495.1 Gallons Filled: 7.822"
2010-06-30	392.4	6.249	$2.61	62.79	"Tank #5 Tank Dates: 6/23-30 (8 days) Avg. Temp: 83 degrees 376.4 miles (392.4 adjusted to match HSI) HSI: 62.8 mpg Fill: 60.2 mpg SGII: 57.1 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: Short tanked for road trip. This tank was 50/50 city/highway. Pretty good results for being 50/50. ---Fill Stats--- Date: 6/30/10 Tank Miles (ODO): 376.4 Gallons Filled: 6.249"
2010-07-01	444.9	7.916	$2.69	56.2	"Tank #6 Tank Dates: 6/30-7/1 (2 days) Avg. Temp: N/A degrees 427.5 miles (444.9 adjusted to match HSI) HSI: 56.2 mpg Fill: 54.0 mpg SGII: 54.7 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: All highway...very little hypermiling. A/C on and cruise control on. Had a passenger in car that didn't want to sweat and wanted to get to the destination quickly! ---Fill Stats--- Date: 7/1/10 Tank Miles (ODO): 427.5 Gallons Filled: 7.916"
2010-07-05	378.3	7.006	$2.65	54	"Tank #7 Tank Dates: 7/1-5 (5 days) Avg. Temp: N/A degrees 366.2 miles (378.3 adjusted to match HSI) HSI: 54.0 mpg Fill: 52.3 mpg SGII: 51.9 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: All highway...very little hypermiling. A/C on and cruise control on. Had a passenger in car that didn't want to sweat and wanted to get to the destination quickly! ---Fill Stats--- Date: 7/5/10 Tank Miles (ODO): 366.2 Gallons Filled: 7.006"
2010-07-11	519.5	9.05	$2.53	57.4	"Tank #8 Tank Dates: 7/5-11 (7 days) Avg. Temp: N/A degrees 488.4 miles (519.47 adjusted to match HSI) HSI: 57.4 mpg Fill: 54.0 mpg SGII: 52.7 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: First 325 miles of this tank was all highway from PA to MA...very little hypermiling. A/C on and cruise control on. Had a passenger in car that didn't want to sweat and wanted to get to the destination quickly! Somewhat saved tank with final 150+ miles of hypermiling. ---Fill Stats--- Date: 7/11/10 Tank Miles (ODO): 488.4 Gallons Filled: 9.050"
2010-07-30	608.5	9.138	$2.57	66.59	"Tank #9 Tank Dates: 7/11-30 (20 days) Avg. Temp: 84 degrees 585.3 miles (608.59 adjusted to match HSI) HSI: 66.6 mpg Fill: 64.1 mpg SGII: 61.3 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: Put max effort into seeing what I could get out of the car for mpg...seems to have produced great results. Weather was mostly dry and hot for entire tank. Had one long highway day and did pretty well with mpg logging 60+ mpg over 100+ miles. 66.6 mpg is highest I have posted since owning a Prius (2009 and 2010 models). ---Fill Stats--- Date: 7/30/10 Tank Miles (ODO): 585.3 Gallons Filled: 9.138"
2010-08-09	598.2	9.391	$2.63	63.7	"Tank #10 Tank Dates: 7/30-8/9 (20 days) Avg. Temp: 85 degrees 563.7 miles (598.2 adjusted to match HSI) HSI: 63.7 mpg Fill: 60.0 mpg SGII: 60.4 mpg Inputing only HSI MPG for 10 tanks until deviation of HSI vs. Fill can be accurately tracked. Will adjust for weighted deviation at that time and again after every 10 tanks. Notes: 50/50 highway/city driving. Lost a chunk of mpg on a long highway trip but not bad for 50/50. Weather was good and have been driving earlier in the morning and later at night so traffic is less. ---Fill Stats--- Date: 8/9/10 Tank Miles (ODO): 563.7 Gallons Filled: 9.391"
2010-08-25	535.6	8.252	$2.53	64.91	"Tank #11 Tank Dates: 8/9-25 (17 days) Avg. Temp: 78 degrees 512.3 miles (535.6 adjusted to match HSI) HSI: 64.9 mpg Fill: 62.1 mpg SGII: 58.9 mpg Tank Deviation After 10 Tanks has settled at around 4%. Notes: 20/80 highway/city driving. Solid tank with mostly city driving to and from work. Temps have settled down so good chance this is my last ""warm"" tank of the summer. ---Fill Stats--- Date: 8/25/10 Tank Miles (ODO): 512.3 Gallons Filled: 8.252"
2010-08-27	517.4	8.695	$2.75	59.51	"Tank #12 Tank Dates: 8/25-27 (3 days) Avg. Temp: NA 498.9 miles (517.4 adjusted to match HSI) HSI: 59.5 mpg Fill: 57.4 mpg SGII: 56.7 mpg Tank Deviation After 10 Tanks has settled at around 4%. Notes: 80/20 highway/city driving. Mostly highway driving on road trip from MA to PA. Thought I could get it over 60 mpg but fell just short. ---Fill Stats--- Date: 8/27/10 Tank Miles (ODO): 498.9 Gallons Filled: 8.695"
2010-09-06	517.8	8.502	$2.59	60.9	"Tank #13 Tank Dates: 8/27-9/6 (11 days) Avg. Temp: NA 489.8 miles (517.8 adjusted to match HSI) HSI: 60.9 mpg Fill: 57.6 mpg SGII: 56.2 mpg Tank Deviation After 10 Tanks has settled at around 4%. Notes: 75/25 highway/city driving. Mostly highway driving on road trip through PA. Got the mpg over 60 mpg despite heavy highway miles. ---Fill Stats--- Date: 9/06/10 Tank Miles (ODO): 489.8 Gallons Filled: 8.502"
2010-09-13	545.3	9.369	$2.49	58.2	"Tank #14 Tank Dates: 9/6-13 (8 days) Avg. Temp: NA 523.1 miles (545.3 adjusted to match HSI) HSI: 58.2 Fill: 55.8 SGII: 55.3 HSI vs. Tank Deviation has settled at around 4% optomistic. Notes: 75/25 highway/city driving. Mostly highway driving on road trip back from PA...final 100 miles of tank was normal work commute driving. ---Fill Stats--- Date: 9/13/10 Tank Miles (ODO): 523.1 Gallons Filled: 9.369"
2010-09-28	587.9	9.391	$2.5	62.6	"Tank #15 Tank Dates: 9/13-28 (16 days) Avg. Temp: 73 degrees 551.8 miles (587.9 adjusted to match HSI) HSI: 62.6 Fill: 58.8 SGII: 59.0 HSI vs. Tank Deviation has settled at around 4% optomistic. Notes: 20/80 highway/city driving. Regular commute routes...temps have dipped quite a bit over the past few weeks...some rain as well. ---Fill Stats--- Date: 9/28/10 Tank Miles (ODO): 551.8 Gallons Filled: 9.391"
2010-10-18	576.3	9.37	$2.75	61.5	"Tank #16 Tank Dates: 9/28-10/18 (21 days) Avg. Temp: 65 degrees 551.2 miles (576.3 adjusted to match HSI) HSI: 61.5 Fill: 58.8 SGII: 55.6 HSI vs. Tank Deviation has settled at around 4% optomistic. Notes: 25/75 highway/city driving. Regular commute routes...temps continue to get lower as does mpg. ---Fill Stats--- Date: 10/18/10 Tank Miles (ODO): 551.2 Gallons Filled: 9.370"
2010-11-03	571.6	9.31	$2.78	61.4	"Tank #17 Tank Dates: 10/18-11/3 (16 days) Avg. Temp: 59 degrees 533.9 miles (571.6 adjusted to match HSI) HSI: 61.4 Fill: 57.4 SGII: 57.0 HSI vs. Tank Deviation has settled at around 4% optomistic. Notes: 25/75 highway/city driving. Regular commute routes...temps continue to get lower but mpg is hanging on for now. No significant precipiation to speak of yet. ---Fill Stats--- Date: 11/03/10 Tank Miles (ODO): 533.9 Gallons Filled: 9.31"
2010-11-18	397.7	6.628	$2.87	60	"Tank #18 Tank Dates: 11/3-18 (16 days) Avg. Temp: 53 degrees 372.1 miles (397.7 adjusted to match HSI) HSI: 60.0 Fill: 54.3 SGII: 54.3 HSI vs. Tank Deviation has settled at around 4% optomistic. Notes: 25/75 highway/city driving. Regular commute routes...temps much lower this tank than last (a full 6 degrees on average) but managed to keep mpg at 60. Short tanked here to fill up for trip to PA. ---Fill Stats--- Date: 11/18/10 Tank Miles (ODO): 372.1 Gallons Filled: 6.628"
2010-11-19	440.4	9.272	$2.89	47.5	"Tank #19 Tank Dates: 11/18-19 (2 days) Avg. Temp: N/A 418.1 miles (440.4 adjusted to match HSI) HSI: 47.5 Fill: 45.1 SGII: 43.8 HSI vs. Tank Deviation has settled at around 5% optomistic. Notes: 90/10 highway/city driving. All highway on roadtrip from MA to PA. Used cruise the entire trip...heat on in car. No hypermiling. ---Fill Stats--- Date: 11/19/10 Tank Miles (ODO): 418.1 Gallons Filled: 9.272"
2010-11-22	396.1	7.97	$3.19	49.7	"Tank #20 Tank Dates: 11/19-22 (4 days) Avg. Temp: N/A 373.8 miles (396.1 adjusted to match HSI) HSI: 49.7 Fill: 46.9 SGII: 45.5 HSI vs. Tank Deviation has settled at around 5% optomistic. Notes: 75/25 highway/city driving. Motly highway on roadtrip from MA to PA and back to MA. Used cruise the entire trip...heat on in car. No hypermiling. ---Fill Stats--- Date: 11/22/10 Tank Miles (ODO): 373.8 Gallons Filled: 7.970"
2010-12-05	506.6	9.523	$3.39	53.2	"Tank #21 Tank Dates: 11/22-12/5 (14 days) Avg. Temp: N/A 440.8 miles (506.6 adjusted to match HSI) HSI: 53.2 Fill: 46.3 SGII: 49.1 HSI vs. Tank Deviation has settled at around 5% optomistic. Notes: 75/25 highway/city driving. 75% of tank was trip back from PA to MA. Cruise on...heat on...no hypermiling. Last 25% of tank was normal commute routes to and from work. ---Fill Stats--- Date: 12/05/10 Tank Miles (ODO): 440.8 Gallons Filled: 9.523"