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Fuel log graph
Efficiency log for: Porthos - 1996 Chevrolet Cavalier
  • Lifetime Fuel Economy: 32.1 mpg (US), 7.3 L/100 km, 38.5 mpg (Imp)
  • 90-day Fuel Economy: 31.3 mpg (US), 7.5 L/100 km, 37.6 mpg (Imp)
  • 3-tank Fuel Economy: 30.2 mpg (US), 7.8 L/100 km, 36.3 mpg (Imp)
  • EPA Combined Rating / % over rating: 25 mpg (US) / 25.2% (based on 90-day fuel economy)
  • Total fills: 36
  • Average cost per gal/L: $2.30 per gal (US); $0.00 per L (price data entered for 10 fill/s)
  • Average cost per fill: $32.46
  • Average distance cost: $0.07 per mi. / $0.04 per km
  • Total fuel used: 547.88 gal (US), 2074 L
  • Total distance traveled: 17574.6 mi. / 28283.6 km
  • Total cost: $324.57
  • Total fuel saved vs. EPA: 155.1 gal. (US) / 587.1 L
  • Total saved: $356.73 (based on avg. cost per gal./L)
  • Average tank distance: 488.2 mi. / 785.7 km
Fill date Distance Fill amount Price Fuel Economy Details
2009-01-27 481.6 mi
775.06 km
15.21 gal (US)
12.67 gal (Imp)
57.58 L
512.58 kWh
$1.939
($29.49 total for this fill)
31.66 mpg (US)
38.01 mpg (Imp)
7.43 L/100 km
3.16 gal (US)/100 mi
1064.33 Wh/mi
2009-01-11 422.4 mi
679.79 km
12.85 gal (US)
10.7 gal (Imp)
48.64 L
433.05 kWh
$1.899
($24.4 total for this fill)
32.87 mpg (US)
39.48 mpg (Imp)
7.16 L/100 km
3.04 gal (US)/100 mi
1025.21 Wh/mi
2008-12-22 404.2 mi
650.5 km
15.27 gal (US)
12.71 gal (Imp)
57.8 L
514.6 kWh
$1.499
($22.89 total for this fill)
26.47 mpg (US)
31.8 mpg (Imp)
8.89 L/100 km
3.78 gal (US)/100 mi
1273.13 Wh/mi
stupid 0 degree weather
2008-12-12 470.4 mi
757.04 km
14.08 gal (US)
11.72 gal (Imp)
53.3 L
474.5 kWh
$1.399
($19.7 total for this fill)
33.41 mpg (US)
40.14 mpg (Imp)
7.04 L/100 km
2.99 gal (US)/100 mi
1008.72 Wh/mi
2008-11-20 487.7 mi
784.88 km
14.99 gal (US)
12.48 gal (Imp)
56.74 L
505.16 kWh
$1.599
($23.97 total for this fill)
32.54 mpg (US)
39.08 mpg (Imp)
7.23 L/100 km
3.07 gal (US)/100 mi
1035.8 Wh/mi
2008-11-01 429.7 mi
691.54 km
13.69 gal (US)
11.4 gal (Imp)
51.82 L
461.35 kWh
$1.899
($26 total for this fill)
31.39 mpg (US)
37.69 mpg (Imp)
7.49 L/100 km
3.19 gal (US)/100 mi
1073.66 Wh/mi
stupid cold weather
2008-10-21 426.7 mi
686.71 km
12.73 gal (US)
10.6 gal (Imp)
48.19 L
429 kWh
$2.349
($29.9 total for this fill)
33.52 mpg (US)
40.25 mpg (Imp)
7.02 L/100 km
2.98 gal (US)/100 mi
1005.39 Wh/mi
cooler weather, trouble keeping engine temp up.
2008-10-06 475.3 mi
764.92 km
13.71 gal (US)
11.42 gal (Imp)
51.9 L
462.03 kWh
$2.899
($39.75 total for this fill)
34.67 mpg (US)
41.62 mpg (Imp)
6.79 L/100 km
2.88 gal (US)/100 mi
972.08 Wh/mi
short trips and weather
2008-09-10 503.7 mi
810.63 km
14.37 gal (US)
11.97 gal (Imp)
54.4 L
484.27 kWh
35.05 mpg (US)
42.08 mpg (Imp)
6.71 L/100 km
2.85 gal (US)/100 mi
961.43 Wh/mi
2008-08-21 520.7 mi
837.99 km
14.46 gal (US)
12.04 gal (Imp)
54.74 L
487.3 kWh
$3.549
($51.32 total for this fill)
36.01 mpg (US)
43.25 mpg (Imp)
6.53 L/100 km
2.78 gal (US)/100 mi
935.86 Wh/mi
2008-07-14 525.3 mi
845.39 km
14.29 gal (US)
11.9 gal (Imp)
54.09 L
481.57 kWh
$3.999
($57.15 total for this fill)
36.76 mpg (US)
44.14 mpg (Imp)
6.4 L/100 km
2.72 gal (US)/100 mi
916.75 Wh/mi
2008-06-19 506.8 mi
815.62 km
13.61 gal (US)
11.33 gal (Imp)
51.52 L
458.66 kWh
37.24 mpg (US)
44.73 mpg (Imp)
6.32 L/100 km
2.69 gal (US)/100 mi
905.01 Wh/mi
2008-06-01 489.8 mi
788.26 km
13.29 gal (US)
11.07 gal (Imp)
50.31 L
447.87 kWh
36.85 mpg (US)
44.25 mpg (Imp)
6.38 L/100 km
2.71 gal (US)/100 mi
914.39 Wh/mi
2008-05-12 502.1 mi
808.05 km
14.2 gal (US)
11.82 gal (Imp)
53.75 L
478.54 kWh
35.36 mpg (US)
42.48 mpg (Imp)
6.65 L/100 km
2.83 gal (US)/100 mi
953.08 Wh/mi
2008-04-28 507.3 mi
816.42 km
13.98 gal (US)
11.64 gal (Imp)
52.92 L
471.13 kWh
36.29 mpg (US)
43.58 mpg (Imp)
6.48 L/100 km
2.76 gal (US)/100 mi
928.7 Wh/mi
Summer gas. Yay!
2008-04-14 496.4 mi
798.88 km
15.47 gal (US)
12.88 gal (Imp)
58.56 L
521.34 kWh
32.09 mpg (US)
38.54 mpg (Imp)
7.33 L/100 km
3.12 gal (US)/100 mi
1050.24 Wh/mi
2008-03-26 443 mi
712.94 km
14.01 gal (US)
11.66 gal (Imp)
53.03 L
472.14 kWh
31.62 mpg (US)
37.99 mpg (Imp)
7.44 L/100 km
3.16 gal (US)/100 mi
1065.78 Wh/mi
2008-03-12 443.1 mi
713.1 km
14.53 gal (US)
12.1 gal (Imp)
55 L
489.66 kWh
30.5 mpg (US)
36.62 mpg (Imp)
7.71 L/100 km
3.28 gal (US)/100 mi
1105.08 Wh/mi
added wiper cowling and WAI. no change. grrr
2008-02-25 470.4 mi
757.04 km
15.05 gal (US)
12.53 gal (Imp)
56.97 L
507.19 kWh
31.26 mpg (US)
37.54 mpg (Imp)
7.53 L/100 km
3.2 gal (US)/100 mi
1078.21 Wh/mi
2008-02-07 428.4 mi
689.44 km
15.32 gal (US)
12.76 gal (Imp)
57.99 L
516.28 kWh
27.96 mpg (US)
33.57 mpg (Imp)
8.41 L/100 km
3.58 gal (US)/100 mi
1205.14 Wh/mi
argh
2008-01-23 477.3 mi
768.14 km
14.13 gal (US)
11.77 gal (Imp)
53.49 L
476.18 kWh
33.78 mpg (US)
40.55 mpg (Imp)
6.96 L/100 km
2.96 gal (US)/100 mi
997.65 Wh/mi
aha! Aero mods and radiator block really worked.
2008-01-08 140.5 mi
226.11 km
5.241 gal (US)
4.36 gal (Imp)
19.84 L
176.62 kWh
26.81 mpg (US)
32.22 mpg (Imp)
8.77 L/100 km
3.73 gal (US)/100 mi
1257.08 Wh/mi
Mod: grill block & front end areo. ran errands, high winds. short tank.
2008-01-03 416.8 mi
670.77 km
14.17 gal (US)
11.8 gal (Imp)
53.64 L
477.53 kWh
29.41 mpg (US)
35.32 mpg (Imp)
8 L/100 km
3.4 gal (US)/100 mi
1145.71 Wh/mi
Winter and errands.
2007-12-10 397.1 mi
639.07 km
13.83 gal (US)
11.52 gal (Imp)
52.35 L
466.07 kWh
28.71 mpg (US)
34.47 mpg (Imp)
8.19 L/100 km
3.48 gal (US)/100 mi
1173.68 Wh/mi
Mod: new LRR tires. Loaned car to son. he got 22mpg for the day . But he mounted the tires
2007-11-26 439.2 mi
706.82 km
13.28 gal (US)
11.06 gal (Imp)
50.27 L
447.54 kWh
33.07 mpg (US)
39.71 mpg (Imp)
7.11 L/100 km
3.02 gal (US)/100 mi
1018.99 Wh/mi
ha! I reset the ECU again, like I did when I installed the new O2 sensor. seems to help.
2007-11-07 465.3 mi
748.83 km
15.5 gal (US)
12.91 gal (Imp)
58.67 L
522.35 kWh
30.02 mpg (US)
36.04 mpg (Imp)
7.83 L/100 km
3.33 gal (US)/100 mi
1122.61 Wh/mi
This was the last tank of premium. though i see an advance in the ignition timing, there is no noticeable change in FE.
2007-10-24 449.6 mi
723.56 km
14.54 gal (US)
12.11 gal (Imp)
55.04 L
490 kWh
30.92 mpg (US)
37.13 mpg (Imp)
7.61 L/100 km
3.23 gal (US)/100 mi
1089.86 Wh/mi
sheesh
2007-10-14 485.6 mi
781.5 km
14.68 gal (US)
12.22 gal (Imp)
55.57 L
494.72 kWh
33.08 mpg (US)
39.74 mpg (Imp)
7.11 L/100 km
3.02 gal (US)/100 mi
1018.78 Wh/mi
premium again. Ignition timing is running +3deg BTDC on premium. haven't calc'd if cost effective yet.
2007-09-05 428.9 mi
690.25 km
13.39 gal (US)
11.15 gal (Imp)
50.69 L
451.24 kWh
32.03 mpg (US)
38.47 mpg (Imp)
7.34 L/100 km
3.12 gal (US)/100 mi
1052.09 Wh/mi
Filled w/ premium
2007-08-22 172.2 mi
277.13 km
5.596 gal (US)
4.66 gal (Imp)
21.18 L
188.59 kWh
30.77 mpg (US)
36.95 mpg (Imp)
7.64 L/100 km
3.25 gal (US)/100 mi
1095.18 Wh/mi
WTF, Mate? Something's wrong here. edit: apparently the ECU had run lean while it learned to average the new O2 sensor.
2007-08-16 161.9 mi
260.55 km
5.656 gal (US)
4.71 gal (Imp)
21.41 L
190.61 kWh
28.62 mpg (US)
34.37 mpg (Imp)
8.22 L/100 km
3.49 gal (US)/100 mi
1177.33 Wh/mi
Ugh
2007-08-09 473.1 mi
761.38 km
12.62 gal (US)
10.51 gal (Imp)
47.77 L
425.29 kWh
37.49 mpg (US)
45.01 mpg (Imp)
6.27 L/100 km
2.67 gal (US)/100 mi
898.94 Wh/mi
New PB. mod: XcelPlus Lubrilon engine treatment, lower oil level in engine
2007-07-23 445.1 mi
716.32 km
13.11 gal (US)
10.92 gal (Imp)
49.63 L
441.81 kWh
33.95 mpg (US)
40.76 mpg (Imp)
6.93 L/100 km
2.95 gal (US)/100 mi
992.61 Wh/mi
mod: 40psi in tires, partial grill block
2007-07-11 491 mi
790.19 km
13.46 gal (US)
11.21 gal (Imp)
50.95 L
453.6 kWh
36.48 mpg (US)
43.8 mpg (Imp)
6.45 L/100 km
2.74 gal (US)/100 mi
923.83 Wh/mi
mod: new O2 sensor, shaved passenger mirror
2007-06-25 312 mi
502.12 km
10.85 gal (US)
9.03 gal (Imp)
41.07 L
365.65 kWh
28.76 mpg (US)
34.55 mpg (Imp)
8.18 L/100 km
3.48 gal (US)/100 mi
1171.96 Wh/mi
2007-06-11 2384 mi
3836.68 km
82.72 gal (US)
68.88 gal (Imp)
313.13 L
2787.66 kWh
28.82 mpg (US)
34.61 mpg (Imp)
8.16 L/100 km
3.47 gal (US)/100 mi
1169.32 Wh/mi
This is Porthos' average for the last two months, adjusted for the incorrect odometer. Previous best was 32.9 mpg.

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


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