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Fuel log graph
Efficiency log for: HX1 - 1998 Honda Civic HX
  • Lifetime Fuel Economy: 45.7 mpg (US), 5.1 L/100 km, 54.9 mpg (Imp)
  • 90-day Fuel Economy: 48.1 mpg (US), 4.9 L/100 km, 57.7 mpg (Imp)
  • 3-tank Fuel Economy: 48.1 mpg (US), 4.9 L/100 km, 57.7 mpg (Imp)
  • EPA Combined Rating / % over rating: 34 mpg (US) / 41.4% (based on 90-day fuel economy)
  • Total fills: 33
  • Average cost per gal/L: $2.41 per gal (US); $0.00 per L (price data entered for 25 fill/s)
  • Average cost per fill: $20.40
  • Average distance cost: $0.05 per mi. / $0.03 per km
  • Total fuel used: 280.79 gal (US), 1062.9 L
  • Total distance traveled: 12833.2 mi. / 20653 km
  • Total cost: $510.11
  • Total fuel saved vs. EPA: 96.7 gal. (US) / 366 L
  • Total saved: $233.05 (based on avg. cost per gal./L)
  • Average tank distance: 388.9 mi. / 625.8 km
Fill date Distance Fill amount Price Fuel Economy Details
2010-04-28 424.4 mi
683.01 km
9.1 gal (US)
7.58 gal (Imp)
34.45 L
306.67 kWh
46.64 mpg (US)
55.99 mpg (Imp)
5.04 L/100 km
2.14 gal (US)/100 mi
722.6 Wh/mi
MPGuino made it a whole tank without resetting. This has been a big problem. Guino showed 9.02 gallons, pump showed 9.1 gallons. Not too bad for calibration.
2010-04-08 399 mi
642.13 km
9.07 gal (US)
7.55 gal (Imp)
34.33 L
305.66 kWh
43.99 mpg (US)
52.85 mpg (Imp)
5.35 L/100 km
2.27 gal (US)/100 mi
766.07 Wh/mi
Odometer and pump, adjusted 3.5% for vx wheels. Somehting is weird because guino showed 8 gallons used on this tank and last tank. However, last tank showed ~7 gallons at pump and this tank showed ~9 gallons at the pump, how can I be off 2 gallons when filling?
2010-04-01 405.3 mi
652.27 km
7.386 gal (US)
6.15 gal (Imp)
27.96 L
248.91 kWh
54.87 mpg (US)
65.9 mpg (Imp)
4.29 L/100 km
1.82 gal (US)/100 mi
614.14 Wh/mi
Didn't log fuel over the winter, got out of the habit. I have now installed MPGuino and have a new zest to hit high MPGs. I drove to get best instant MPG on guino. Calibration is still off a little. The weather was not best for this tank so expect more this summer. Figured MPG the old way, odometer minus 3.5% for vx wheels. Guino only looks to be off by 9% on this tank, but I will not adjust it until two tanks are done.
2009-11-02 401.5 mi
646.15 km
9.588 gal (US)
7.98 gal (Imp)
36.29 L
323.12 kWh
$2.559
($24.54 total for this fill)
41.88 mpg (US)
50.31 mpg (Imp)
5.62 L/100 km
2.39 gal (US)/100 mi
804.78 Wh/mi
adjusted 3.5%
2009-10-26 344.2 mi
553.94 km
8.314 gal (US)
6.92 gal (Imp)
31.47 L
280.18 kWh
$2.499
($20.78 total for this fill)
41.4 mpg (US)
49.74 mpg (Imp)
5.68 L/100 km
2.42 gal (US)/100 mi
814 Wh/mi
adjusted 3.5%
2009-10-21 367.4 mi
591.27 km
9.181 gal (US)
7.64 gal (Imp)
34.75 L
309.4 kWh
40.02 mpg (US)
48.09 mpg (Imp)
5.88 L/100 km
2.5 gal (US)/100 mi
842.13 Wh/mi
adjusted 3.5%
2009-10-17 263.5 mi
424.06 km
5.266 gal (US)
4.38 gal (Imp)
19.93 L
177.46 kWh
$2.429
($12.79 total for this fill)
50.04 mpg (US)
60.16 mpg (Imp)
4.7 L/100 km
2 gal (US)/100 mi
673.47 Wh/mi
adjusted 3.5%, short fill so not correct on mpg
2009-10-13 345.5 mi
556.03 km
8.498 gal (US)
7.08 gal (Imp)
32.17 L
286.38 kWh
$2.199
($18.69 total for this fill)
40.66 mpg (US)
48.8 mpg (Imp)
5.79 L/100 km
2.46 gal (US)/100 mi
828.89 Wh/mi
adjusted 3.5%
2009-10-07 402.1 mi
647.12 km
8.61 gal (US)
7.17 gal (Imp)
32.59 L
290.16 kWh
$2.189
($18.85 total for this fill)
46.7 mpg (US)
56.08 mpg (Imp)
5.04 L/100 km
2.14 gal (US)/100 mi
721.61 Wh/mi
Adjusted 3.5% for vx wheels. UPDATE: thermostat was indeed bad and leaking. New thermostat holds temp steady on long downhill coasts. Lean burn kicks in much more now when ambient temps are below 60 degrees, would never kick in before unless above 60 degrees. Thermostat had been bad since I bought the car. Finger crossed for record MPG on the next few tanks!!
2009-10-01 355 mi
571.32 km
8.471 gal (US)
7.05 gal (Imp)
32.07 L
285.47 kWh
$2.259
($19.14 total for this fill)
41.91 mpg (US)
50.35 mpg (Imp)
5.61 L/100 km
2.39 gal (US)/100 mi
804.14 Wh/mi
Adjusted 3.5% for vx wheels, have not replaced thermostat yet.
2009-09-27 360 mi
579.36 km
8.237 gal (US)
6.86 gal (Imp)
31.18 L
277.59 kWh
$2.329
($19.18 total for this fill)
43.71 mpg (US)
52.48 mpg (Imp)
5.38 L/100 km
2.29 gal (US)/100 mi
771.08 Wh/mi
Adjusted 3.5% for VX wheels, weather has been cold and rainy, high winds. I believe my thermostat is not closing which is causing the car to take a long time to warm up and it won't stay warmed up when gliding with engine on. Bought a new thermostat and will install shortly.
2009-09-21 391 mi
629.25 km
7.87 gal (US)
6.55 gal (Imp)
29.79 L
265.22 kWh
$2.319
($18.25 total for this fill)
49.68 mpg (US)
59.69 mpg (Imp)
4.73 L/100 km
2.01 gal (US)/100 mi
678.31 Wh/mi
adjusted 3.5% for vx wheels. Did more P&G which I have been neglecting on the last couple tanks.
2009-09-14 389 mi
626.03 km
8.801 gal (US)
7.33 gal (Imp)
33.32 L
296.59 kWh
$2.449
($21.55 total for this fill)
44.2 mpg (US)
53.07 mpg (Imp)
5.32 L/100 km
2.26 gal (US)/100 mi
762.44 Wh/mi
adjusted 3.5% for vx wheels.
2009-09-02 373.5 mi
601.09 km
8.212 gal (US)
6.84 gal (Imp)
31.09 L
276.74 kWh
$2.399
($19.7 total for this fill)
45.48 mpg (US)
54.61 mpg (Imp)
5.17 L/100 km
2.2 gal (US)/100 mi
740.94 Wh/mi
2009-08-25 432.4 mi
695.88 km
8.667 gal (US)
7.22 gal (Imp)
32.81 L
292.08 kWh
$2.459
($21.31 total for this fill)
49.89 mpg (US)
59.89 mpg (Imp)
4.71 L/100 km
2 gal (US)/100 mi
675.49 Wh/mi
Got back to more serious P&G. Odometer read 448, adjusted 3.5% for VX wheels.
2009-08-16 386 mi
621.21 km
8.962 gal (US)
7.46 gal (Imp)
33.92 L
302.02 kWh
$2.499
($22.4 total for this fill)
43.07 mpg (US)
51.74 mpg (Imp)
5.46 L/100 km
2.32 gal (US)/100 mi
782.44 Wh/mi
Odometer read 400, adjusted 3.5% for vx wheels
2009-08-12 371 mi
597.07 km
8.232 gal (US)
6.85 gal (Imp)
31.16 L
277.42 kWh
$2.499
($20.57 total for this fill)
45.07 mpg (US)
54.16 mpg (Imp)
5.22 L/100 km
2.22 gal (US)/100 mi
747.76 Wh/mi
Wife drove some, lot of AC useage. Odometer read 384.5, adjusted 3.5% for vx wheels.
2009-08-07 426.4 mi
686.22 km
8.532 gal (US)
7.11 gal (Imp)
32.3 L
287.53 kWh
$2.409
($20.55 total for this fill)
49.98 mpg (US)
59.97 mpg (Imp)
4.71 L/100 km
2 gal (US)/100 mi
674.32 Wh/mi
odometer read 441.9, adjusted 3.5% as usual for the smaller 13" VX wheels.
2009-07-30 437.1 mi
703.44 km
9.168 gal (US)
7.63 gal (Imp)
34.7 L
308.96 kWh
$2.399
($21.99 total for this fill)
47.68 mpg (US)
57.29 mpg (Imp)
4.93 L/100 km
2.1 gal (US)/100 mi
706.84 Wh/mi
Caught some bad weather again, but I know the potential is here for 55mpg, just have to P&G more.
Odometer read 452.9
2009-07-22 424.4 mi
683.01 km
8.722 gal (US)
7.26 gal (Imp)
33.02 L
293.93 kWh
$2.359
($20.58 total for this fill)
48.66 mpg (US)
58.46 mpg (Imp)
4.83 L/100 km
2.06 gal (US)/100 mi
692.58 Wh/mi
More P&G. Odometer read 439.8
2009-07-15 428.2 mi
689.12 km
9.172 gal (US)
7.64 gal (Imp)
34.72 L
309.1 kWh
$2.359
($21.64 total for this fill)
46.69 mpg (US)
56.05 mpg (Imp)
5.04 L/100 km
2.14 gal (US)/100 mi
721.86 Wh/mi
A lot of things worked against me on this tank, lot of bad traffic and head winds. Odometer read 443.7 and I adjusted 3.5% as usual.
2009-07-07 403.4 mi
649.21 km
7.998 gal (US)
6.66 gal (Imp)
30.28 L
269.53 kWh
$2.419
($19.35 total for this fill)
50.44 mpg (US)
60.57 mpg (Imp)
4.66 L/100 km
1.98 gal (US)/100 mi
668.15 Wh/mi
All commuting and some extra in town running around, but I did a lot more engine on P&G. It really made a difference. odometer read 418, adjusted 3.5% as usual.
2009-06-26 411 mi
661.44 km
8.2 gal (US)
6.83 gal (Imp)
31.04 L
276.34 kWh
$2.479
($20.33 total for this fill)
50.12 mpg (US)
60.18 mpg (Imp)
4.69 L/100 km
2 gal (US)/100 mi
672.36 Wh/mi
Mixed highway and commuting. Odometer read 426, adjusted by 3.5%.
2009-06-16 400 mi
643.74 km
9.239 gal (US)
7.69 gal (Imp)
34.97 L
311.35 kWh
$2.479
($22.9 total for this fill)
43.29 mpg (US)
52.02 mpg (Imp)
5.43 L/100 km
2.31 gal (US)/100 mi
778.38 Wh/mi
Partial trip back from Glenwood. Odometer read 414.7 so adjusted to 400 for 3.5%. I got after it climbing the hills, I should have stayed in the efficiency range.
2009-06-11 421.7 mi
678.66 km
8.19 gal (US)
6.82 gal (Imp)
31 L
276 kWh
$2.899
($23.74 total for this fill)
51.49 mpg (US)
61.83 mpg (Imp)
4.57 L/100 km
1.94 gal (US)/100 mi
654.49 Wh/mi
Partial commute and trip to Glenwood. Weather was bad, lots of rain during trip. Odometer read 437, adjusted 3.5% to 421.7. This was my first time on the interstate for a longer trip. I tried to stay at or below 65 even though the speed limit was 75.
2009-06-08 382 mi
614.77 km
8.2 gal (US)
6.83 gal (Imp)
31.04 L
276.34 kWh
$2.439
($20 total for this fill)
46.59 mpg (US)
55.93 mpg (Imp)
5.05 L/100 km
2.15 gal (US)/100 mi
723.4 Wh/mi
I decided to only adjust the trip mileage by 3.5% to account for the VX wheels and 175/70R13 tires like the calculator shows me. That will keep my numbers the same as before instead of getting into the issue of the mileage always being off with the stock size tires. So numbers in the future should correlate correctly to my previous fuel logs. This trip mileage was adjusted 3.5% (odometer read 396)
2009-06-03 376 mi
605.11 km
8.345 gal (US)
6.95 gal (Imp)
31.59 L
281.23 kWh
$2.419
($20.19 total for this fill)
45.06 mpg (US)
54.1 mpg (Imp)
5.22 L/100 km
2.22 gal (US)/100 mi
747.95 Wh/mi
After this refill I swapped to the VX wheels and 175/70R13 tires. It looks like my speedo has always been off by 6% with the factory 14" tires (185/65R14). The speedo was reading high so all of my previous tanks including this one should really be adjusted down by 6%. The VX wheels now add another 3.5% change, so tanks in the future are going to need an adjustment somehwere in the 9% range to really be accurate or a 3.5% change to match up with previous measurements. Now I know why people use a GPS to get more accurate mileage info.
2009-05-28 393.6 mi
633.44 km
8.813 gal (US)
7.34 gal (Imp)
33.36 L
297 kWh
$2.339
($20.61 total for this fill)
44.66 mpg (US)
53.62 mpg (Imp)
5.27 L/100 km
2.24 gal (US)/100 mi
754.57 Wh/mi
Got stuck at an unusual amount of lights.
2009-05-18 403 mi
648.57 km
9.1 gal (US)
7.58 gal (Imp)
34.45 L
306.67 kWh
$2.25
($20.48 total for this fill)
44.29 mpg (US)
53.17 mpg (Imp)
5.31 L/100 km
2.26 gal (US)/100 mi
760.97 Wh/mi
I encountered a lot of wind during this tank.
2009-05-11 360.9 mi
580.81 km
7.77 gal (US)
6.47 gal (Imp)
29.41 L
261.85 kWh
46.45 mpg (US)
55.78 mpg (Imp)
5.06 L/100 km
2.15 gal (US)/100 mi
725.55 Wh/mi
This was not straight commuting, it had a trip to Salida.
2009-05-08 417 mi
671.1 km
8.93 gal (US)
7.43 gal (Imp)
33.8 L
300.94 kWh
46.7 mpg (US)
56.12 mpg (Imp)
5.04 L/100 km
2.14 gal (US)/100 mi
721.68 Wh/mi
Finally got the vacuum gauge in and started trying harder to drive for mileage. Weather was nice again.
2009-05-02 359.7 mi
578.88 km
9.22 gal (US)
7.68 gal (Imp)
34.9 L
310.71 kWh
39.01 mpg (US)
46.84 mpg (Imp)
6.03 L/100 km
2.56 gal (US)/100 mi
863.8 Wh/mi
Still did not have vacuum gauge and weather was cold and rainy a few days.
2009-04-27 378 mi
608.33 km
8.73 gal (US)
7.27 gal (Imp)
33.05 L
294.2 kWh
43.3 mpg (US)
51.99 mpg (Imp)
5.43 L/100 km
2.31 gal (US)/100 mi
778.31 Wh/mi
First tank after buying the car, took it easy but was learning about the car and did not have a vacuum gauge. Weather was nice and I could feel lean burn working.

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


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