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Fuel log graph
Efficiency log for: Unit-02 Red Insight - 2000 Honda Insight 5MT
  • Lifetime Fuel Economy: 68.2 mpg (US), 3.4 L/100 km, 81.9 mpg (Imp)
  • 90-day Fuel Economy: 65.6 mpg (US), 3.6 L/100 km, 78.8 mpg (Imp)
  • 3-tank Fuel Economy: 68.9 mpg (US), 3.4 L/100 km, 82.8 mpg (Imp)
  • EPA Combined Rating / % over rating: 53 mpg (US) / 23.8% (based on 90-day fuel economy)
  • Total fills: 9
  • Average cost per gal/L: $3.71 per gal (US); $0.98 per L (price data entered for 9 fill/s)
  • Average cost per fill: $28.43
  • Average distance cost: $0.04 per mi. / $0.03 per km
  • Total fuel used: 85.33 gal (US), 323 L
  • Total distance traveled: 5821.4 mi. / 9368.6 km
  • Total cost: $255.90
  • Total fuel saved vs. EPA: 24.5 gal. (US) / 92.7 L
  • Total saved: $90.9 (based on avg. cost per gal./L)
  • Average tank distance: 646.8 mi. / 1041 km
Fill date Distance Fill amount Price Fuel Economy Details
2017-12-08 589.6 mi
948.87 km
8.988 gal (US)
7.48 gal (Imp)
34.02 L
302.9 kWh
$3.299
($29.65 total for this fill)
65.6 mpg (US)
78.82 mpg (Imp)
3.59 L/100 km
1.52 gal (US)/100 mi
513.74 Wh/mi
Used: 90 Octane Ethanol Free
Filled: 90 Octane Ethanol Free
FCD: 66.2 mpg
Type: Commute
Goal: Hypermiling

Half this tank was before I put the car in the shop, then it sat for 3 months!! Good thing I used ethanol-free because I didn't put any stabilizer in it.

IMA battery had lots of problems after I got it out of the shop, it's not good for them to sit like this. It might be totally toast.

About 500 miles into the tank I installed extensive underbody aero at the back of the car.
2017-08-05 775.7 mi
1248.37 km
10.07 gal (US)
8.39 gal (Imp)
38.12 L
339.36 kWh
$2.899
($29.19 total for this fill)
77.03 mpg (US)
92.46 mpg (Imp)
3.05 L/100 km
1.3 gal (US)/100 mi
437.49 Wh/mi
Used: 87 Octane Ethanol Free
Filled: 90 Octane Ethanol Free
FCD: 80.3 mpg
Type: Commute
Goal: Hypermiling

100% Hypermiling, went for the record.

300 miles in I got two new RE92s for the front of the car. They should finally be broken in now at the end of the tank.

Around 450 miles some idiot smashed into the car, damaging it. Some driving (about 100 miles) was done without the passenger side rocker panel or real wheel cover, which hurt aero. Also, at the same time one of the back tires, a 7-yr-old RE92 started to delaminate, so the last 300~ miles were done with the spare wheel on the back driver's side pumped up to 60 PSI. I ordered new RE92s for the back but they're not in yet.

Despite this adversity, this tank ended up being my 2nd best tank ever, only surpassed by a 78 mpg tank from October 2016 in my old Silver 2001 Insight. That tank was 90 Octane Ethanol Free while this one was 87 Octane Ethanol Free, so maybe on my next tank (which is 90 Octane E-Free like my record tank) I have a chance to set a new record.
2017-07-09 599.5 mi
964.8 km
9.446 gal (US)
7.87 gal (Imp)
35.76 L
318.33 kWh
$2.629
($24.83 total for this fill)
63.47 mpg (US)
76.18 mpg (Imp)
3.71 L/100 km
1.58 gal (US)/100 mi
530.99 Wh/mi
Used: 87 Octane Regular
Filled: 87 Octane Ethanol Free
FCD: 62.0 mpg
Type: Road Trip
Goal: 84 MPH

First 500 miles were the last of the trip back from Canada, trying to go real fast on the highway. I reverted to a more slow driving style for the last 100.
2017-07-07 597 mi
960.78 km
9.806 gal (US)
8.17 gal (Imp)
37.12 L
330.46 kWh
$2.359
($23.13 total for this fill)
60.88 mpg (US)
73.07 mpg (Imp)
3.86 L/100 km
1.64 gal (US)/100 mi
553.53 Wh/mi
Used: 87 Octane Regular
Filled: Same
FCD: 62.7 mpg
Type: Road Trip
Goal: --

Half driving around in Canada, the rest was trying to do 84 on the way back to Atlanta.
2017-07-05 631.1 mi
1015.66 km
37.595 L
9.93 gal (US)
8.27 gal (Imp)
334.64 kWh
$0.979
($36.81 total for this fill)
3.7 L/100 km
63.55 mpg (US)
76.31 mpg (Imp)
1.57 gal (US)/100 mi
530.25 Wh/mi
Used: 87 Octane Regular
Filled: Same
FCD: 65.8 mpg
Type: Road Trip
Goal: --

Driving around in Canada, including one longer road trip up to Georgian Bay. My EFAS button was malfunctioning for like the 2nd half of this gas tank.
2017-06-28 588.7 mi
947.42 km
8.705 gal (US)
7.25 gal (Imp)
32.95 L
293.36 kWh
$4.22
($36.74 total for this fill)
67.63 mpg (US)
81.2 mpg (Imp)
3.48 L/100 km
1.48 gal (US)/100 mi
498.32 Wh/mi
Used: 87 Octane Regular
Filled: Same
FCD: 65.0 mpg
Type: Road Trip
Goal: Hold 84 MPH

Rest of the trip to Canada.
2017-06-28 674.6 mi
1085.66 km
9.245 gal (US)
7.7 gal (Imp)
35 L
311.56 kWh
$2.169
($20.05 total for this fill)
72.97 mpg (US)
87.61 mpg (Imp)
3.22 L/100 km
1.37 gal (US)/100 mi
461.84 Wh/mi
Used: 90 Octane Ethanol Free
Filled: 87 Octane Regular
FCD: 73 mpg
Type: Half Commute//Half Road Trip
Goal: FE then hold 84MPH

First 350 miles were commute as normal, then I started on a drive to Canada. I try to hold 84 MPH on the long distance drives.

I overfilled, I always go to 4 clicks, but on click 2 this one like gas spilled, I was really surprised by it. This means this tank's mileage will be artificially deflated and the next one's will be inflated, but I estimate the error to be less than 1%.
2017-06-20 684.4 mi
1101.44 km
9.761 gal (US)
8.13 gal (Imp)
36.95 L
328.95 kWh
$2.899
($28.3 total for this fill)
70.12 mpg (US)
84.18 mpg (Imp)
3.35 L/100 km
1.43 gal (US)/100 mi
480.64 Wh/mi
Used: 90 Octane Ethanol Free
Filled: Same
FCD: 71.6 mpg
Type: Commute
Goal: FE

Notes:
I did an oil change about half-way. I used Mobil-1 0W20 and a new filter. On the last day of this tank I drove around with a passenger and used the AC a lot.
2017-06-14 680.8 mi
1095.64 km
9.382 gal (US)
7.81 gal (Imp)
35.51 L
316.17 kWh
$2.899
($27.2 total for this fill)
72.56 mpg (US)
87.17 mpg (Imp)
3.24 L/100 km
1.38 gal (US)/100 mi
464.41 Wh/mi
Used: 87 Octane Regular
Filled: 90 Ethanol Free
FCD: 70.2 mpg
Type: Commute
Goal: FE

Note: The price is of the 90 Oct E-Free, this tank's gas was just regular 10% ethanol 87 oct stuff and was cheaper.

First gas tank! The first couple days had a lot of rain.

For most of the tank I had cut a wire in the IMA compartment that meant it was constantly charging the 12V battery which could have put a little extra load on the IMA. I got the wire back together near the end. Also, I cleaned out the EGR passages around 400 miles but it was pretty clean as far as these cars go.

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


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