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Fuel log graph
Efficiency log for: Hyper Black - 2010 Honda Insight LX
  • Lifetime Fuel Economy: 48.1 mpg (US), 4.9 L/100 km, 57.7 mpg (Imp)
  • 90-day Fuel Economy: 48.6 mpg (US), 4.8 L/100 km, 58.4 mpg (Imp)
  • 3-tank Fuel Economy: 48.7 mpg (US), 4.8 L/100 km, 58.5 mpg (Imp)
  • EPA Combined Rating / % over rating: 41 mpg (US) / 18.5% (based on 90-day fuel economy)
  • Total fills: 11
  • Average cost per gal/L: $2.35 per gal (US); $0.00 per L (price data entered for 11 fill/s)
  • Average cost per fill: $22.18
  • Average distance cost: $0.05 per mi. / $0.03 per km
  • Total fuel used: 103.9 gal (US), 393.3 L
  • Total distance traveled: 4993.2 mi. / 8035.8 km
  • Total cost: $243.96
  • Total fuel saved vs. EPA: 17.9 gal. (US) / 67.8 L
  • Total saved: $42.07 (based on avg. cost per gal./L)
  • Average tank distance: 453.9 mi. / 730.5 km
Fill date Distance Fill amount Price Fuel Economy Details
2017-03-09 485.9 mi
781.98 km
9.607 gal (US)
8 gal (Imp)
36.37 L
323.76 kWh
($21.51 total for this fill)
50.58 mpg (US)
60.74 mpg (Imp)
4.65 L/100 km
1.98 gal (US)/100 mi
666.31 Wh/mi
Used: 90 Octane Ethanol Free
Filled: 87 Octane Regular
FCD: 53.9mpg (but it got reset)
Type: 75 rideshare, rest commute
Goal: Focused more on hypermiling than usual

I got very ill for about 10 days which stopped me from rideshare driving until yesterday, when I did 75 miles of that. The rest was all commute driving. I did try some more serious hypermiling on some of the trips.
2017-02-28 453.8 mi
730.32 km
9.379 gal (US)
7.81 gal (Imp)
35.5 L
316.07 kWh
($24.38 total for this fill)
48.38 mpg (US)
58.1 mpg (Imp)
4.86 L/100 km
2.07 gal (US)/100 mi
696.5 Wh/mi
Used: 87 Octane Regular
Filled: 90 Octane Ethanol Free
FCD: 50.3mpg (but it got reset)
Type: Mostly commute
Goal: Keep up with traffic

This tank was almost totally commute miles. I think I did one or two rideshare trips at the start.

At the middle of this tank I had the car taken in for warranty repairs (takata airbags, roof moulding). While it was in the shop Honda did two ECM software updates that affect IMA usage. These may have a small positive effect on fuel economy going forward.
2017-02-19 458.4 mi
737.72 km
9.73 gal (US)
8.1 gal (Imp)
36.83 L
327.9 kWh
($22.37 total for this fill)
47.11 mpg (US)
56.59 mpg (Imp)
4.99 L/100 km
2.12 gal (US)/100 mi
715.31 Wh/mi
Used: 87 Octane Regular
Filled: 87 Octane Regular
FCD: 50.0mpg
Type: Half rideshare, half commute
Goal: Keep up with traffic

50/50 this tank, rideshare and commute driving.
2017-02-14 430.9 mi
693.47 km
9.186 gal (US)
7.65 gal (Imp)
34.77 L
309.57 kWh
($22.96 total for this fill)
46.91 mpg (US)
56.33 mpg (Imp)
5.01 L/100 km
2.13 gal (US)/100 mi
718.43 Wh/mi
Used: 87 Octane Ethanol-Free
Filled: 87 Octane Regular
FCD: 50.2mpg
Type: Mostly Rideshare, some commute
Goal: Keep up with traffic

This tank was also mostly rideshare driving.
2017-02-11 431.6 mi
694.59 km
9.164 gal (US)
7.63 gal (Imp)
34.69 L
308.83 kWh
($23.82 total for this fill)
47.1 mpg (US)
56.57 mpg (Imp)
4.99 L/100 km
2.12 gal (US)/100 mi
715.55 Wh/mi
Used: 87 Octane Regular
Filled: 87 Octane Ethanol-Free
FCD: 51.4mpg
Type: Mostly Rideshare, some commute
Goal: Keep up with traffic

Drove kinda like a normal person, that is to say, bad for MPG. But at least 60% of this tank was rideshare driving.
2017-02-09 432.8 mi
696.52 km
9.138 gal (US)
7.61 gal (Imp)
34.59 L
307.95 kWh
($22.84 total for this fill)
47.36 mpg (US)
56.87 mpg (Imp)
4.97 L/100 km
2.11 gal (US)/100 mi
711.53 Wh/mi
Used: 87 Octane Regular
Filled: Same
FCD: 51.4mpg
Type: Commute and Ridesharing
Goal: Light Hypermiling

I wasn't going for a record this time, instead I was trying to get around, but I also wasn't going super fast the whole time. I used some hypermiling techniques, I was just a little more liberal with the speed than usual. I also finally got to do some rideshare driving again. For that type of driving I can't hypermile the way I would if I was going for a record like last time.
2017-02-04 502.1 mi
808.05 km
9.414 gal (US)
7.84 gal (Imp)
35.64 L
317.25 kWh
($20.7 total for this fill)
53.34 mpg (US)
64.04 mpg (Imp)
4.41 L/100 km
1.87 gal (US)/100 mi
631.85 Wh/mi
Used: 87 Octane Regular
Filled: Same
FCD: 55.7mpg
Type: Commute
Goal: Hypermiling

I installed a coroplast radiator block (blocks about 60% of the rad) and pumped the tires to 48 PSI before beginning this tank. I also installed brake drag reduction clips. The weather was kinda cold a couple days, kinda lukewarm for some of the other days.

I was trying to hypermile as best I could throughout the tank, and saw a max of 56.2 on the FCD. Unless I do some other mods this is probably the best kind of MPG I can get in this car with my commute. When we get to summer and it's warmer that will help of course, but like as far as driving goes, I was frequently doing 50 MPH in 65 MPH zones, going slow on regular roads, etc. I'll be hard-pressed to drive more fuel efficiently over this length of time again.

As I mentioned on the previous tank there might have been an issue with filling up all the way at the gas pump, which could have knocked that tank down a bit in comparison to previous ones, I went to 4 clicks this time to be sure. (Previous to the prior tank I had gone only to 3 clicks.)
2017-01-25 477.5 mi
768.46 km
9.952 gal (US)
8.29 gal (Imp)
37.67 L
335.38 kWh
($22.68 total for this fill)
47.98 mpg (US)
57.6 mpg (Imp)
4.9 L/100 km
2.08 gal (US)/100 mi
702.37 Wh/mi
Used: 87 Octane Regular
Filled: Same
FCD: 52.5mpg
Type: Commute
Goal: Hypermiling

This tank was mostly commute miles, but there was a little bit of rideshare driving. I installed my ScanGauge II into the car about halfway through, and started using it to look at TPS to help keep me in a higher MPG bracket. I'm still learning though. The TPS seems to behave a little different from the G1 Insight.

I'm suspicious that prior to this I may not have been filling it all the way or something. I took this tank farther than any previous tanks, and I did end up putting more gas in than previous, but the discrepancy between FCD reported mpg and tank calculated mpg is really big. I need to figure out how to measure MPG with my ScanGauge to see what it thinks. I also hypermiled like to the max for most of this tank, way more than I could have on tank 1 since I was so new to the car with that one. But I do know the tires may be a bit low because I haven't pumped them in a few months, so that could be a factor.
2016-12-01 445.7 mi
717.28 km
9.812 gal (US)
8.17 gal (Imp)
37.14 L
330.66 kWh
($20.01 total for this fill)
45.42 mpg (US)
54.55 mpg (Imp)
5.18 L/100 km
2.2 gal (US)/100 mi
741.89 Wh/mi
Tank was 87 octane regular, refilled with the same. FCD read 48.8 mpg at the end of the tank. This was almost exclusively rideshare driving.
2016-11-29 439 mi
706.5 km
9.47 gal (US)
7.89 gal (Imp)
35.85 L
319.14 kWh
($20.45 total for this fill)
46.36 mpg (US)
55.64 mpg (Imp)
5.07 L/100 km
2.16 gal (US)/100 mi
726.97 Wh/mi
Tank was 87 Ethanol Free, but now filled with 87 Regular. Second tank in the black car, tried to go a little further with it, but economy wasn't as good. I'm using this car for Uber and Lyft mostly, I try to take the silver one if it's just going to be a commute.
2016-11-23 435.5 mi
700.87 km
9.044 gal (US)
7.53 gal (Imp)
34.24 L
304.78 kWh
($22.24 total for this fill)
48.15 mpg (US)
57.84 mpg (Imp)
4.89 L/100 km
2.08 gal (US)/100 mi
699.84 Wh/mi
This tank was 87 Octane Regular, I refilled with 87 Octane Ethanol Free. This was my first tank, the FCD said I had 50.1 MPG at the end of it. I ended the tank early because I'm not used to the fuel gauge yet.

I pumped the tires to 44 PSI after the very first drive. I did a lot of driving in areas I had never been to before so I made quite a few U-turns. At least half of the driving was on the highway.

View: spreadsheet friendly fuel log output (for copy/paste)

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