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Fuel log graph
Efficiency log for: mild-mannered civic - 1997 Honda Civic LX
  • Lifetime Fuel Economy: 33.9 mpg (US), 6.9 L/100 km, 40.7 mpg (Imp)
  • 90-day Fuel Economy: 33.9 mpg (US), 6.9 L/100 km, 40.7 mpg (Imp)
  • 3-tank Fuel Economy: 30 mpg (US), 7.8 L/100 km, 36 mpg (Imp)
  • EPA Combined Rating / % over rating: 28 mpg (US) / 21% (based on 90-day fuel economy)
  • Total fills: 24
  • Average cost per gal/L: $2.29 per gal (US); $0.00 per L (price data entered for 24 fill/s)
  • Average cost per fill: $19.01
  • Average distance cost: $0.07 per mi. / $0.04 per km
  • Total fuel used: 199.14 gal (US), 753.8 L
  • Total distance traveled: 6755.6 mi. / 10872.1 km
  • Total cost: $456.16
  • Total fuel saved vs. EPA: 42.1 gal. (US) / 159.4 L
  • Total saved: $96.41 (based on avg. cost per gal./L)
  • Average tank distance: 281.5 mi. / 453 km
Fill date Distance Fill amount Price Fuel Economy Details
2017-11-16 326.2 mi
524.97 km
10.854 gal (US)
9.04 gal (Imp)
41.09 L
365.78 kWh
$2.64
($28.65 total for this fill)
30.05 mpg (US)
36.08 mpg (Imp)
7.83 L/100 km
3.33 gal (US)/100 mi
1121.34 Wh/mi
Time has become a more precious commodity than fuel
2017-11-13 255.5 mi
411.19 km
9.16 gal (US)
7.63 gal (Imp)
34.67 L
308.69 kWh
$2.3
($21.07 total for this fill)
27.89 mpg (US)
33.49 mpg (Imp)
8.43 L/100 km
3.59 gal (US)/100 mi
1208.18 Wh/mi
2017-11-07 315.6 mi
507.91 km
9.89 gal (US)
8.24 gal (Imp)
37.44 L
333.29 kWh
$2.36
($23.34 total for this fill)
31.91 mpg (US)
38.3 mpg (Imp)
7.37 L/100 km
3.13 gal (US)/100 mi
1056.05 Wh/mi
2017-11-03 220.6 mi
355.02 km
6.154 gal (US)
5.13 gal (Imp)
23.3 L
207.39 kWh
$2.36
($14.52 total for this fill)
35.85 mpg (US)
43 mpg (Imp)
6.56 L/100 km
2.79 gal (US)/100 mi
940.12 Wh/mi
Slowly not getting in such a big hurry again.
2017-11-01 245.1 mi
394.45 km
7.798 gal (US)
6.49 gal (Imp)
29.52 L
262.79 kWh
$2.4
($18.72 total for this fill)
31.43 mpg (US)
37.77 mpg (Imp)
7.48 L/100 km
3.18 gal (US)/100 mi
1072.17 Wh/mi
2017-10-30 349.8 mi
562.95 km
11.411 gal (US)
9.5 gal (Imp)
43.2 L
384.55 kWh
$2.4
($27.39 total for this fill)
30.65 mpg (US)
36.82 mpg (Imp)
7.67 L/100 km
3.26 gal (US)/100 mi
1099.34 Wh/mi
2017-10-25 133.5 mi
214.85 km
4.303 gal (US)
3.58 gal (Imp)
16.29 L
145.01 kWh
$2.15
($9.25 total for this fill)
31.02 mpg (US)
37.29 mpg (Imp)
7.58 L/100 km
3.22 gal (US)/100 mi
1086.22 Wh/mi
2017-10-24 330.2 mi
531.41 km
10.724 gal (US)
8.93 gal (Imp)
40.59 L
361.4 kWh
$2.49
($26.7 total for this fill)
30.79 mpg (US)
36.98 mpg (Imp)
7.64 L/100 km
3.25 gal (US)/100 mi
1094.49 Wh/mi
weather is cooling down. I need to get under the speed limit and stop using cruise...
2017-10-19 225.1 mi
362.26 km
7.522 gal (US)
6.26 gal (Imp)
28.47 L
253.49 kWh
$2.28
($17.15 total for this fill)
29.93 mpg (US)
35.96 mpg (Imp)
7.86 L/100 km
3.34 gal (US)/100 mi
1126.12 Wh/mi
2017-10-17 335.2 mi
539.45 km
10.613 gal (US)
8.84 gal (Imp)
40.17 L
357.66 kWh
$2.28
($24.2 total for this fill)
31.58 mpg (US)
37.92 mpg (Imp)
7.45 L/100 km
3.17 gal (US)/100 mi
1067 Wh/mi
cel has been on and off. Weather is cooling down. Having trouble getting back into my eco-groove.
2017-10-12 273.9 mi
440.8 km
7.784 gal (US)
6.48 gal (Imp)
29.47 L
262.32 kWh
$2.1
($16.35 total for this fill)
35.19 mpg (US)
42.27 mpg (Imp)
6.69 L/100 km
2.84 gal (US)/100 mi
957.72 Wh/mi
Starting to feel better/drive smarter.
2017-10-09 232.4 mi
374.01 km
7.76 gal (US)
6.46 gal (Imp)
29.37 L
261.51 kWh
$2.1
($16.3 total for this fill)
29.95 mpg (US)
35.98 mpg (Imp)
7.85 L/100 km
3.34 gal (US)/100 mi
1125.26 Wh/mi
CEL is on. Getting better, still sleeping later/driving faster.
2017-10-04 347.9 mi
559.89 km
10.779 gal (US)
8.97 gal (Imp)
40.8 L
363.25 kWh
$2.25
($24.25 total for this fill)
32.28 mpg (US)
38.78 mpg (Imp)
7.29 L/100 km
3.1 gal (US)/100 mi
1044.12 Wh/mi
Been sick and sleeping later=driving faster. Check engine light has been coming on and off, lean code.
2017-09-26 290.3 mi
467.19 km
7.657 gal (US)
6.37 gal (Imp)
28.98 L
258.04 kWh
$2.16
($16.54 total for this fill)
37.91 mpg (US)
45.57 mpg (Imp)
6.2 L/100 km
2.64 gal (US)/100 mi
888.87 Wh/mi
Normal commute. Maybe a little more AC and CC than usual.
2017-09-15 289.3 mi
465.58 km
8.313 gal (US)
6.92 gal (Imp)
31.47 L
280.15 kWh
$2.27
($18.87 total for this fill)
34.8 mpg (US)
41.81 mpg (Imp)
6.76 L/100 km
2.87 gal (US)/100 mi
968.37 Wh/mi
Lots of 70+ in heavy traffic.
2017-09-14 389.4 mi
626.68 km
9.642 gal (US)
8.03 gal (Imp)
36.5 L
324.94 kWh
$2.25
($21.69 total for this fill)
40.39 mpg (US)
48.49 mpg (Imp)
5.82 L/100 km
2.48 gal (US)/100 mi
834.46 Wh/mi
Upper grill block and half of the lower grill block were on for this tank.
1.5oz of acetone after last fill-up.
Warm-up with grill block takes .75 miles, intake temps are now 20-30F over ambient (originally 10F over ambient).
2017-09-08 270.1 mi
434.68 km
7.321 gal (US)
6.1 gal (Imp)
27.71 L
246.72 kWh
$2.39
($17.5 total for this fill)
36.89 mpg (US)
44.28 mpg (Imp)
6.37 L/100 km
2.71 gal (US)/100 mi
913.44 Wh/mi
Mostly back and forth to work. Block heater has coolant at 85-109F depending on exactly when I leave for work and on outside temps. Torque converter does not lock up until the engine hit 177F, it takes about 1.5 miles of driving to hit 177F.
2017-09-05 410.1 mi
659.99 km
10.627 gal (US)
8.85 gal (Imp)
40.23 L
358.13 kWh
$2.4
($25.5 total for this fill)
38.59 mpg (US)
46.34 mpg (Imp)
6.1 L/100 km
2.59 gal (US)/100 mi
873.27 Wh/mi
Mostly standard back and forth to work. Weather has been ~55F in the mornings. Just started the block heater last night. 400W, in the water jacket. 1 hr of on-time gave 90F on startup.
2017-08-29 330.4 mi
531.73 km
8.798 gal (US)
7.32 gal (Imp)
33.3 L
296.49 kWh
$2.13
($18.74 total for this fill)
37.55 mpg (US)
45.14 mpg (Imp)
6.26 L/100 km
2.66 gal (US)/100 mi
897.37 Wh/mi
First 65 miles were doing a "normal" driving experiment (34avg on that trip). Cruising speed has been around 45-60mph. Tires are 55psi.
2017-08-24 404.6 mi
651.14 km
10.204 gal (US)
8.5 gal (Imp)
38.63 L
343.87 kWh
$2.19
($22.35 total for this fill)
39.65 mpg (US)
47.6 mpg (Imp)
5.93 L/100 km
2.52 gal (US)/100 mi
849.9 Wh/mi
Removed power steering belt 60 miles into this tank. Mostly driving to and from work. Some interstate and city driving.
2017-08-18 332.6 mi
535.27 km
8.94 gal (US)
7.44 gal (Imp)
33.84 L
301.28 kWh
$2.03
($18.15 total for this fill)
37.2 mpg (US)
44.7 mpg (Imp)
6.32 L/100 km
2.69 gal (US)/100 mi
905.83 Wh/mi
Mostly normal back and forth to work. SG is not calibrated yet, it showed 42mpg avg for the tank. Car is still unmodded. all driving has been shoes on/cruise off 45-60mph plus a few small towns
2017-08-11 113 mi
181.86 km
3.605 gal (US)
3 gal (Imp)
13.65 L
121.49 kWh
$2.249
($8.11 total for this fill)
31.35 mpg (US)
37.67 mpg (Imp)
7.51 L/100 km
3.19 gal (US)/100 mi
1075.13 Wh/mi
Regular driving. Changed fuel filter and let engine idle extensively while burping cooling system after timing belt/water pump/block heater.
Fill procedure established:
Fuel full blast until pump kicks off, then fill on the first click until the pump shuts off, done. I am not a fan of "topping off", but with the filler neck being a little finicky, I don't want to wait 15 minuted to fill up, or mis-judge my gallons and have the pump shut off before I can slow it down.
2017-08-10 282.4 mi
454.48 km
7.829 gal (US)
6.52 gal (Imp)
29.64 L
263.84 kWh
$2.249
($17.61 total for this fill)
36.07 mpg (US)
43.31 mpg (Imp)
6.52 L/100 km
2.77 gal (US)/100 mi
934.28 Wh/mi
Driving mostly country roads, was able to do a lot of 48mph, torque converter just locked up. Gallons is probably too optimistic on this fill, need to nail down a better fill procedure as the filler neck backs up before tank is all the way full. Using torque app.
2017-07-29 52.4 mi
84.33 km
1.455 gal (US)
1.21 gal (Imp)
5.51 L
49.03 kWh
$2.209
($3.21 total for this fill)
36.01 mpg (US)
43.31 mpg (Imp)
6.53 L/100 km
2.78 gal (US)/100 mi
935.69 Wh/mi
Playing with engine on coasting and timing lights. Using torque app.

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


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