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Fuel log graph
Efficiency log for: Mazdaspeed - 2004 mazda Mazdaspeed Miata MAZDASPEED
  • Lifetime Fuel Economy: 26.9 mpg (US), 8.7 L/100 km, 32.3 mpg (Imp)
  • 90-day Fuel Economy: 26.9 mpg (US), 8.7 L/100 km, 32.3 mpg (Imp)
  • 3-tank Fuel Economy: 27.7 mpg (US), 8.5 L/100 km, 33.3 mpg (Imp)
  • EPA Combined Rating / % over rating: 20 mpg (US) / 34.6% (based on 90-day fuel economy)
  • Total fills: 5
  • Average cost per gal/L: $3.52 per gal (US); $0.00 per L (price data entered for 5 fill/s)
  • Average cost per fill: $32.63
  • Average distance cost: $0.13 per mi. / $0.08 per km
  • Total fuel used: 46.39 gal (US), 175.6 L
  • Total distance traveled: 1292.5 mi. / 2080.1 km
  • Total cost: $163.17
  • Total fuel saved vs. EPA: 18.2 gal. (US) / 68.9 L
  • Total saved: $64.06 (based on avg. cost per gal./L)
  • Average tank distance: 258.5 mi. / 416 km
Fill date Distance Fill amount Price Fuel Economy Details
2011-11-02 297.6 mi
478.94 km
10.839 gal (US)
9.03 gal (Imp)
41.03 L
365.27 kWh
$3.439
($37.28 total for this fill)
27.46 mpg (US)
32.96 mpg (Imp)
8.57 L/100 km
3.64 gal (US)/100 mi
1227.39 Wh/mi
I don't know how I got the mileage I did. I didn't drive extra conservatively. I didn't EOC, I idled a lot, made use of the turbo, and did an 80mph stint on the interstate.
2011-10-25 292.6 mi
470.89 km
10.078 gal (US)
8.39 gal (Imp)
38.15 L
339.63 kWh
$3.519
($35.46 total for this fill)
29.03 mpg (US)
34.87 mpg (Imp)
8.1 L/100 km
3.44 gal (US)/100 mi
1160.73 Wh/mi
2011-10-17 276.5 mi
444.98 km
10.371 gal (US)
8.64 gal (Imp)
39.26 L
349.5 kWh
$3.59
($37.23 total for this fill)
26.66 mpg (US)
32 mpg (Imp)
8.82 L/100 km
3.75 gal (US)/100 mi
1264.01 Wh/mi
top-off from one click fill, number is skewed downward. I was going to start one click filling, but my calculation showed 34.9mpg and didn't trust the pump to click off the same every time. Other customers using the pumps affects the flow rate of the gas, thus the click-off point. I will be topping it off now.
2011-10-12 152.8 mi
245.91 km
4.877 gal (US)
4.06 gal (Imp)
18.46 L
164.35 kWh
$3.53
($17.22 total for this fill)
31.33 mpg (US)
37.64 mpg (Imp)
7.51 L/100 km
3.19 gal (US)/100 mi
1075.59 Wh/mi
This was a one click fill, so the results are skewed upward. I will be going to the same pump and doing one click fill ups unless I am out of town. If I could have fit in another gallon (unlikely) it would only have dropped to 26mpg.
2011-10-06 273 mi
439.35 km
10.221 gal (US)
8.51 gal (Imp)
38.69 L
344.45 kWh
$3.52
($35.98 total for this fill)
26.71 mpg (US)
32.08 mpg (Imp)
8.81 L/100 km
3.74 gal (US)/100 mi
1261.72 Wh/mi

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


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