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Fuel log graph
Efficiency log for: Gerald - 1991 Pontiac Firefly 3dr
  • Lifetime Fuel Economy: 41.3 mpg (US), 5.7 L/100 km, 49.6 mpg (Imp)
  • 90-day Fuel Economy: 40.1 mpg (US), 5.9 L/100 km, 48.1 mpg (Imp)
  • 3-tank Fuel Economy: 40.1 mpg (US), 5.9 L/100 km, 48.1 mpg (Imp)
  • EPA Combined Rating / % over rating: 40 mpg (US) / 0.2% (based on 90-day fuel economy)
  • Total fills: 12
  • Average cost per gal/L: $1.04 per gal (US); $0.00 per L (price data entered for 12 fill/s)
  • Average cost per fill: $7.14
  • Average distance cost: $0.03 per mi. / $0.02 per km
  • Total fuel used: 82.1 gal (US), 310.8 L
  • Total distance traveled: 3393 mi. / 5460.5 km
  • Total cost: $85.65
  • Total fuel saved vs. EPA: 2.7 gal. (US) / 10.2 L
  • Total saved: $2.81 (based on avg. cost per gal./L)
  • Average tank distance: 282.8 mi. / 455 km
Fill date Distance Fill amount Price Fuel Economy Details
2010-01-01 334 mi
537.52 km
8.685 gal (US)
7.23 gal (Imp)
32.88 L
292.68 kWh
$1.055
($9.16 total for this fill)
38.46 mpg (US)
46.2 mpg (Imp)
6.12 L/100 km
2.6 gal (US)/100 mi
876.29 Wh/mi
New tires installed at 200.4km. went from 145/80R12 to 175/65R14. filled at P1 millstream. This gas might be E10.
2009-11-20 377 mi
606.72 km
9.5 gal (US)
7.91 gal (Imp)
35.96 L
320.15 kWh
$1.049
($9.97 total for this fill)
39.68 mpg (US)
47.66 mpg (Imp)
5.93 L/100 km
2.52 gal (US)/100 mi
849.2 Wh/mi
Filled at royal oak co-op. HAI installed near end of tank. Also removed back seat stuff. been raining for two weeks.
2009-10-29 435.4 mi
700.71 km
10.42 gal (US)
8.68 gal (Imp)
39.44 L
351.15 kWh
$1.069
($11.14 total for this fill)
41.79 mpg (US)
50.16 mpg (Imp)
5.63 L/100 km
2.39 gal (US)/100 mi
806.5 Wh/mi
tried to drain tank. car started to stall. added 50ml methanol at 674km. added ~1L at 678km. filled at co-op on millstream. oil at 3/5ths at fill.
2009-09-30 283.1 mi
455.61 km
7.154 gal (US)
5.96 gal (Imp)
27.08 L
241.09 kWh
$1.029
($7.36 total for this fill)
39.57 mpg (US)
47.5 mpg (Imp)
5.94 L/100 km
2.53 gal (US)/100 mi
851.61 Wh/mi
@millstream co-op. installed remote starter at this time.
2009-08-21 258.6 mi
416.18 km
5.826 gal (US)
4.85 gal (Imp)
22.05 L
196.34 kWh
$1.039
($6.05 total for this fill)
44.39 mpg (US)
53.32 mpg (Imp)
5.3 L/100 km
2.25 gal (US)/100 mi
759.24 Wh/mi
at wilkinson co-op.
2009-07-25 361.5 mi
581.78 km
7.561 gal (US)
6.3 gal (Imp)
28.62 L
254.81 kWh
$1.019
($7.7 total for this fill)
47.81 mpg (US)
57.38 mpg (Imp)
4.92 L/100 km
2.09 gal (US)/100 mi
704.87 Wh/mi
filled at gov't co-op
2009-06-30 307.6 mi
495.03 km
6.987 gal (US)
5.82 gal (Imp)
26.45 L
235.46 kWh
$1.069
($7.47 total for this fill)
44.02 mpg (US)
52.85 mpg (Imp)
5.34 L/100 km
2.27 gal (US)/100 mi
765.47 Wh/mi
did the half shafts on this tank
2009-06-12 292 mi
469.93 km
6.407 gal (US)
5.33 gal (Imp)
24.25 L
215.92 kWh
$1.069
($6.85 total for this fill)
45.58 mpg (US)
54.78 mpg (Imp)
5.16 L/100 km
2.19 gal (US)/100 mi
739.45 Wh/mi
at pump 5 of millstream rd co-op (by wades).
discovered rad fan not working.
2009-05-09 297.9 mi
479.42 km
7.107 gal (US)
5.92 gal (Imp)
26.9 L
239.51 kWh
$1.079
($7.67 total for this fill)
41.92 mpg (US)
50.32 mpg (Imp)
5.61 L/100 km
2.39 gal (US)/100 mi
803.99 Wh/mi
camping @ french beach
2009-04-30 139.4 mi
224.34 km
3.39 gal (US)
2.82 gal (Imp)
12.83 L
114.24 kWh
$0.989
($3.35 total for this fill)
41.12 mpg (US)
49.43 mpg (Imp)
5.72 L/100 km
2.43 gal (US)/100 mi
819.51 Wh/mi
fixed dist vacuum advance lines
2009-04-21 176.8 mi
284.53 km
5.112 gal (US)
4.26 gal (Imp)
19.35 L
172.27 kWh
$0.999
($5.11 total for this fill)
34.59 mpg (US)
41.5 mpg (Imp)
6.8 L/100 km
2.89 gal (US)/100 mi
974.38 Wh/mi
2009-04-02 129.7 mi
208.73 km
3.947 gal (US)
3.29 gal (Imp)
14.94 L
133.01 kWh
$0.969
($3.82 total for this fill)
32.86 mpg (US)
39.42 mpg (Imp)
7.16 L/100 km
3.04 gal (US)/100 mi
1025.52 Wh/mi
first half tank on the firefly. from friday to thursday. pump 5 @ brentwood.

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


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