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Fuel log graph
Efficiency log for: Mazda 3 - 2014 Mazda 3 i Sport
  • Lifetime Fuel Economy: 44.3 mpg (US), 5.3 L/100 km, 53.3 mpg (Imp)
  • 90-day Fuel Economy: 44.3 mpg (US), 5.3 L/100 km, 53.3 mpg (Imp)
  • 3-tank Fuel Economy: 45.6 mpg (US), 5.2 L/100 km, 54.7 mpg (Imp)
  • EPA Combined Rating / % over rating: 33 mpg (US) / 34.4% (based on 90-day fuel economy)
  • Total fills: 8
  • Average cost per gal/L: $2.80 per gal (US); $0.00 per L (price data entered for 8 fill/s)
  • Average cost per fill: $27.83
  • Average distance cost: $0.06 per mi. / $0.04 per km
  • Total fuel used: 79.42 gal (US), 300.6 L
  • Total distance traveled: 3521.4 mi. / 5667.1 km
  • Total cost: $222.61
  • Total fuel saved vs. EPA: 27.3 gal. (US) / 103.3 L
  • Total saved: $76.44 (based on avg. cost per gal./L)
  • Average tank distance: 440.2 mi. / 708.4 km
Fill date Distance Fill amount Price Fuel Economy Details
2021-06-15 450.4 mi
724.85 km
10.385 gal (US)
8.65 gal (Imp)
39.31 L
349.97 kWh
$2.899
($30.11 total for this fill)
43.37 mpg (US)
52.07 mpg (Imp)
5.42 L/100 km
2.31 gal (US)/100 mi
777.02 Wh/mi
Higher speed driving and A/C use. Car computer said 44.8 MPG, and 35 mph average speed. Fuel light (2 bars) came on at 440.6 miles and still 2 bars on fill.
2021-06-07 452.1 mi
727.58 km
9.725 gal (US)
8.1 gal (Imp)
36.81 L
327.73 kWh
$2.899
($28.19 total for this fill)
46.49 mpg (US)
55.81 mpg (Imp)
5.06 L/100 km
2.15 gal (US)/100 mi
724.91 Wh/mi
More work commuting as usual. Average speed of 38 mph, 4 bars of fuel left, computer said 48.3 mpg.
2021-05-30 427.9 mi
688.64 km
9.095 gal (US)
7.57 gal (Imp)
34.43 L
306.5 kWh
$2.959
($26.91 total for this fill)
47.05 mpg (US)
56.53 mpg (Imp)
5 L/100 km
2.13 gal (US)/100 mi
716.29 Wh/mi
Work commutes and some longer trips. Fuel light did not come on, 5 bars remaining, car said 47.8 mpg and 38 mph average speed.
2021-05-23 501 mi
806.28 km
10.964 gal (US)
9.13 gal (Imp)
41.5 L
369.49 kWh
$2.959
($32.44 total for this fill)
45.7 mpg (US)
54.87 mpg (Imp)
5.15 L/100 km
2.19 gal (US)/100 mi
737.5 Wh/mi
Mostly work commutes and some longer highway driving. Average speed of 38 mph, fuel light (2 bars) came on at 466.8 miles. Filled with one bar showing for the last 10 miles or so. Car computer said 46.8 MPG.
2021-04-21 418.7 mi
673.83 km
9.807 gal (US)
8.17 gal (Imp)
37.12 L
330.5 kWh
$2.599
($25.49 total for this fill)
42.69 mpg (US)
51.25 mpg (Imp)
5.51 L/100 km
2.34 gal (US)/100 mi
789.35 Wh/mi
Part of deals gap trip, brother driving for about 120 miles, other is work commutes. Average speed of 42 mph, car said 44.5 mpg, 3 bars of fuel remaining.
2021-04-17 442.5 mi
712.13 km
9.852 gal (US)
8.2 gal (Imp)
37.29 L
332.01 kWh
$2.799
($27.58 total for this fill)
44.91 mpg (US)
53.96 mpg (Imp)
5.24 L/100 km
2.23 gal (US)/100 mi
750.31 Wh/mi
Work + deals gap trip. Got new tires during this tank, now correct size. Average speed of 38 mph. Fuel light came on at 419.3 miles, two bars left. Car said 44.1 MPG.
2021-04-14 434.3 mi
698.94 km
10.079 gal (US)
8.39 gal (Imp)
38.15 L
339.66 kWh
$2.639
($26.6 total for this fill)
43.09 mpg (US)
51.76 mpg (Imp)
5.46 L/100 km
2.32 gal (US)/100 mi
782.09 Wh/mi
Regular work commutes, average speed of 39 mph, four bars of fuel left, car computer said 46.3 MPG. Skip shifting more commonly. Still using horribly flat spotted tires. Attached scangauge and monitoring how the car behaves. Ignition timing advance seems pretty aggressive compared to the V6 accord, but will drop very low at high throttle. I suspect higher octane fuel would help make the most of the high compression ratio.
2021-04-08 394.5 mi
634.89 km
9.511 gal (US)
7.92 gal (Imp)
36 L
320.52 kWh
$2.659
($25.29 total for this fill)
41.48 mpg (US)
49.81 mpg (Imp)
5.67 L/100 km
2.41 gal (US)/100 mi
812.47 Wh/mi
Four bars remaining, didn't realize avg speed does not reset with avg mpg, so went ahead and reset that for next tank. Subtracted 3.16% for undersize tires. Car computer said 43.3 MPG.

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


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