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Fuel log graph
Efficiency log for: Marilyn - 2002 Chevrolet Prizm Base
  • Lifetime Fuel Economy: 34 mpg (US), 6.9 L/100 km, 40.8 mpg (Imp)
  • 90-day Fuel Economy: 34 mpg (US), 6.9 L/100 km, 40.8 mpg (Imp)
  • 3-tank Fuel Economy: 36.6 mpg (US), 6.4 L/100 km, 44 mpg (Imp)
  • EPA Combined Rating / % over rating: 27 mpg (US) / 25.7% (based on 90-day fuel economy)
  • Total fills: 9
  • Average cost per gal/L: $3.74 per gal (US); $0.00 per L (price data entered for 9 fill/s)
  • Average cost per fill: $36.98
  • Average distance cost: $0.11 per mi. / $0.07 per km
  • Total fuel used: 89 gal (US), 336.9 L
  • Total distance traveled: 3022 mi. / 4863.4 km
  • Total cost: $332.82
  • Total fuel saved vs. EPA: 22.9 gal. (US) / 86.7 L
  • Total saved: $85.65 (based on avg. cost per gal./L)
  • Average tank distance: 335.8 mi. / 540.4 km
Fill date Distance Fill amount Price Fuel Economy Details
2014-05-31 159 mi
255.89 km
4.231 gal (US)
3.52 gal (Imp)
16.02 L
142.58 kWh
$3
($12.69 total for this fill)
37.58 mpg (US)
45.17 mpg (Imp)
6.26 L/100 km
2.66 gal (US)/100 mi
896.73 Wh/mi
Initial fillup after UltraGauge installation; part of the fuel calibration.
Changed oil same day. A bit over 3000 miles since I bought the car. Put in a Mobil 1 oil filter, 1 qt of Marvel Mystery Oil, and the rest, Valvoline synthetic 5W-30 oil.
2014-05-28 394 mi
634.08 km
10.911 gal (US)
9.08 gal (Imp)
41.3 L
367.7 kWh
$3.85
($42.01 total for this fill)
36.11 mpg (US)
43.39 mpg (Imp)
6.51 L/100 km
2.77 gal (US)/100 mi
933.25 Wh/mi
2014-05-15 405 mi
651.78 km
11.029 gal (US)
9.18 gal (Imp)
41.75 L
371.68 kWh
$3.9
($43.01 total for this fill)
36.72 mpg (US)
44.12 mpg (Imp)
6.41 L/100 km
2.72 gal (US)/100 mi
917.73 Wh/mi
My highest MPG to date. What did I do different? AFAIK, nothing. Perhaps it was a fluke; I don't know.
2014-05-05 286 mi
460.27 km
8.99 gal (US)
7.49 gal (Imp)
34.03 L
302.96 kWh
$3.9
($35.06 total for this fill)
31.81 mpg (US)
38.18 mpg (Imp)
7.39 L/100 km
3.14 gal (US)/100 mi
1059.3 Wh/mi
2014-04-26 378 mi
608.33 km
11.142 gal (US)
9.28 gal (Imp)
42.18 L
375.49 kWh
$3.86
($43.01 total for this fill)
33.93 mpg (US)
40.73 mpg (Imp)
6.93 L/100 km
2.95 gal (US)/100 mi
993.36 Wh/mi
2014-04-17 357 mi
574.54 km
10.842 gal (US)
9.03 gal (Imp)
41.04 L
365.38 kWh
$3.69
($40.01 total for this fill)
32.93 mpg (US)
39.53 mpg (Imp)
7.14 L/100 km
3.04 gal (US)/100 mi
1023.47 Wh/mi
2014-04-07 333 mi
535.91 km
10.413 gal (US)
8.67 gal (Imp)
39.42 L
350.92 kWh
$3.65
($38.01 total for this fill)
31.98 mpg (US)
38.41 mpg (Imp)
7.36 L/100 km
3.13 gal (US)/100 mi
1053.81 Wh/mi
2014-03-28 372 mi
598.68 km
10.903 gal (US)
9.08 gal (Imp)
41.27 L
367.43 kWh
$3.67
($40.01 total for this fill)
34.12 mpg (US)
40.97 mpg (Imp)
6.89 L/100 km
2.93 gal (US)/100 mi
987.72 Wh/mi
First full tank of gas I've driven on since I got the car a couple of weeks ago. No special instrumentation; just watching my speed. My general rules of thumb: 55 mph max on the interstate except during coasting, speed limit on secondary roads, careful acceleration, coast in neutral when possible (this tank only, though, I'm afraid; I don't know if that's bad for an AT). Future adjustments to follow when I install an UltraGuage.
2014-03-20 338 mi
543.96 km
10.543 gal (US)
8.78 gal (Imp)
39.91 L
355.3 kWh
$3.7
($39.01 total for this fill)
32.06 mpg (US)
38.5 mpg (Imp)
7.34 L/100 km
3.12 gal (US)/100 mi
1051.18 Wh/mi
First tank of gas...

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


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