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Fuel log graph
Efficiency log for: Purple Penny Pincher - 1995 Pontiac Firefly Base
  • Lifetime Fuel Economy: 40.3 mpg (US), 5.8 L/100 km, 48.4 mpg (Imp)
  • 90-day Fuel Economy: 38.4 mpg (US), 6.1 L/100 km, 46.1 mpg (Imp)
  • 3-tank Fuel Economy: 38.4 mpg (US), 6.1 L/100 km, 46.1 mpg (Imp)
  • EPA Combined Rating / % over rating: 40 mpg (US) / -4.1% (based on 90-day fuel economy)
  • Total fills: 21
  • Average cost per gal/L: $4.39 per gal (US); $1.16 per L (price data entered for 21 fill/s)
  • Average cost per fill: $38.36
  • Average distance cost: $0.11 per mi. / $0.07 per km
  • Total fuel used: 183.98 gal (US), 696.4 L
  • Total distance traveled: 7408.4 mi. / 11922.7 km
  • Total cost: $805.60
  • Total fuel saved vs. EPA: 1.2 gal. (US) / 4.5 L
  • Total saved: $5.27 (based on avg. cost per gal./L)
  • Average tank distance: 352.8 mi. / 567.7 km
Fill date Distance Fill amount Price Fuel Economy Details
2017-01-14 485.1 km
301.43 mi
30.72 L
8.12 gal (US)
6.76 gal (Imp)
273.64 kWh
$1.199
($36.83 total for this fill)
6.33 L/100 km
37.12 mpg (US)
44.59 mpg (Imp)
2.69 gal (US)/100 mi
907.81 Wh/mi
First consistent sub-zero temperatures she's seen.
2016-12-20 542.6 km
337.16 mi
32.123 L
8.49 gal (US)
7.07 gal (Imp)
286.11 kWh
$1.099
($35.3 total for this fill)
5.92 L/100 km
39.71 mpg (US)
47.69 mpg (Imp)
2.52 gal (US)/100 mi
848.59 Wh/mi
Grill block, 195f thermostat put in before this tank.
2016-12-02 499.2 km
310.19 mi
30.762 L
8.13 gal (US)
6.77 gal (Imp)
273.98 kWh
$1.139
($35.04 total for this fill)
6.16 L/100 km
38.15 mpg (US)
45.82 mpg (Imp)
2.62 gal (US)/100 mi
883.27 Wh/mi
Last fill up before winter eco mods!
2016-05-11 559.6 km
347.72 mi
33.435 L
8.83 gal (US)
7.35 gal (Imp)
297.57 kWh
$1.089
($36.41 total for this fill)
5.97 L/100 km
39.38 mpg (US)
47.31 mpg (Imp)
2.54 gal (US)/100 mi
855.77 Wh/mi
2016-04-19 558.1 km
346.79 mi
34.9 L
9.22 gal (US)
7.68 gal (Imp)
310.71 kWh
$1.059
($36.96 total for this fill)
6.25 L/100 km
37.61 mpg (US)
45.15 mpg (Imp)
2.66 gal (US)/100 mi
895.96 Wh/mi
2016-03-24 586.6 km
364.5 mi
34.86 L
9.21 gal (US)
7.67 gal (Imp)
310.38 kWh
$1.059
($36.92 total for this fill)
5.94 L/100 km
39.58 mpg (US)
47.52 mpg (Imp)
2.53 gal (US)/100 mi
851.52 Wh/mi
2016-02-18 545.3 km
338.83 mi
33.048 L
8.73 gal (US)
7.27 gal (Imp)
294.2 kWh
$1.029
($34.01 total for this fill)
6.06 L/100 km
38.81 mpg (US)
46.61 mpg (Imp)
2.58 gal (US)/100 mi
868.28 Wh/mi
2016-02-11 554.8 km
344.74 mi
32.7 L
8.64 gal (US)
7.19 gal (Imp)
291.17 kWh
$0.979
($32.01 total for this fill)
5.89 L/100 km
39.9 mpg (US)
47.95 mpg (Imp)
2.51 gal (US)/100 mi
844.61 Wh/mi
Winter tires & colder weather = yuck.
Cheaper gas = yay!
2015-12-19 526.6 km
327.21 mi
31.99 L
8.45 gal (US)
7.04 gal (Imp)
284.77 kWh
$1.129
($36.12 total for this fill)
6.07 L/100 km
38.72 mpg (US)
46.48 mpg (Imp)
2.58 gal (US)/100 mi
870.3 Wh/mi
Winter tires, colder weather. Effect on fuel mileage...?
2015-11-28 543.3 km
337.59 mi
31.836 L
8.41 gal (US)
7 gal (Imp)
283.42 kWh
$1.149
($36.58 total for this fill)
5.86 L/100 km
40.14 mpg (US)
48.23 mpg (Imp)
2.49 gal (US)/100 mi
839.54 Wh/mi
Getting cold...just put winter tires on...next tank might be interesting.
2015-11-11 607.7 km
377.61 mi
34.58 L
9.14 gal (US)
7.61 gal (Imp)
308.02 kWh
$1.189
($41.12 total for this fill)
5.69 L/100 km
41.31 mpg (US)
49.62 mpg (Imp)
2.42 gal (US)/100 mi
815.71 Wh/mi
2015-10-14 613.6 km
381.27 mi
35.037 L
9.26 gal (US)
7.71 gal (Imp)
312.06 kWh
$1.069
($37.45 total for this fill)
5.71 L/100 km
41.17 mpg (US)
49.45 mpg (Imp)
2.43 gal (US)/100 mi
818.48 Wh/mi
2015-08-28 617.6 km
383.76 mi
34.952 L
9.23 gal (US)
7.69 gal (Imp)
311.05 kWh
$1.199
($41.91 total for this fill)
5.66 L/100 km
41.58 mpg (US)
49.9 mpg (Imp)
2.41 gal (US)/100 mi
810.53 Wh/mi
2015-08-06 615.6 km
382.52 mi
33.848 L
8.94 gal (US)
7.45 gal (Imp)
301.28 kWh
$1.269
($42.95 total for this fill)
5.5 L/100 km
42.79 mpg (US)
51.34 mpg (Imp)
2.34 gal (US)/100 mi
787.62 Wh/mi
2015-07-20 567 km
352.32 mi
34.141 L
9.02 gal (US)
7.51 gal (Imp)
303.97 kWh
$1.279
($43.67 total for this fill)
6.02 L/100 km
39.06 mpg (US)
46.91 mpg (Imp)
2.56 gal (US)/100 mi
862.77 Wh/mi
Too much city driving!
2015-06-29 623.8 km
387.61 mi
32.477 L
8.58 gal (US)
7.14 gal (Imp)
289.15 kWh
$1.299
($42.19 total for this fill)
5.21 L/100 km
45.18 mpg (US)
54.29 mpg (Imp)
2.21 gal (US)/100 mi
745.98 Wh/mi
Replaced that wheel bearing at last. Had a 250 km highway trip on this tank. Might have overfilled the tank...time will tell.
2015-06-09 598.6 km
371.95 mi
33.44 L
8.83 gal (US)
7.36 gal (Imp)
297.57 kWh
$1.239
($41.43 total for this fill)
5.59 L/100 km
42.12 mpg (US)
50.54 mpg (Imp)
2.37 gal (US)/100 mi
800.03 Wh/mi
Still need to replace that wheel bearing!
2015-05-15 581.5 km
361.33 mi
32.81 L
8.67 gal (US)
7.22 gal (Imp)
292.18 kWh
$1.249
($40.98 total for this fill)
5.64 L/100 km
41.68 mpg (US)
50.05 mpg (Imp)
2.4 gal (US)/100 mi
808.62 Wh/mi
2015-04-20 541.5 km
336.47 mi
31.528 L
8.33 gal (US)
6.94 gal (Imp)
280.72 kWh
$1.179
($37.17 total for this fill)
5.82 L/100 km
40.39 mpg (US)
48.48 mpg (Imp)
2.48 gal (US)/100 mi
834.31 Wh/mi
No changes, other than rear wheel bearing on the way out...
2015-03-26 643.5 km
399.85 mi
35.212 L
9.3 gal (US)
7.75 gal (Imp)
313.41 kWh
$1.189
($41.87 total for this fill)
5.47 L/100 km
42.99 mpg (US)
51.59 mpg (Imp)
2.33 gal (US)/100 mi
783.82 Wh/mi
Almost ran it dry this time. First fresh tank of gas. Only changes were higher tire pressure and switching parking lights to LED bulbs for a lighter electrical load.
2015-03-04 511.1 km
317.58 mi
31.993 L
8.45 gal (US)
7.04 gal (Imp)
284.77 kWh
$1.209
($38.68 total for this fill)
6.26 L/100 km
37.58 mpg (US)
45.11 mpg (Imp)
2.66 gal (US)/100 mi
896.69 Wh/mi
First measured fuel up. Mixed driving.

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


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