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Fuel log graph
Efficiency log for: ND Miata - 2015 Mazda MX-5 Special Package
  • Lifetime Fuel Economy: 39.6 mpg (US), 5.9 L/100 km, 47.6 mpg (Imp)
  • 90-day Fuel Economy: 42.5 mpg (US), 5.5 L/100 km, 51.1 mpg (Imp)
  • 3-tank Fuel Economy: 42.3 mpg (US), 5.6 L/100 km, 50.8 mpg (Imp)
  • EPA Combined Rating / % over rating: 34 mpg (US) / 25.1% (based on 90-day fuel economy)
  • Total fills: 59
  • Average cost per gal/L: $11.20 per gal (US); $2.96 per L (price data entered for 59 fill/s)
  • Average cost per fill: $85.51
  • Average distance cost: $0.28 per mi. / $0.18 per km
  • Total fuel used: 450.08 gal (US), 1703.7 L
  • Total distance traveled: 17822.3 mi. / 28682.1 km
  • Total cost: $5,045.23
  • Total fuel saved vs. EPA: 74.1 gal. (US) / 280.5 L
  • Total saved: $829.92 (based on avg. cost per gal./L)
  • Average tank distance: 302.1 mi. / 486.1 km
Fill date Distance Fill amount Price Fuel Economy Details
2024-02-17 549.6 km
341.51 mi
32.31 L
8.54 gal (US)
7.11 gal (Imp)
287.8 kWh
$3.12
($100.81 total for this fill)
5.88 L/100 km
39.99 mpg (US)
48.03 mpg (Imp)
2.5 gal (US)/100 mi
842.73 Wh/mi
2024-01-27 516.33 km
320.83 mi
30.64 L
8.09 gal (US)
6.74 gal (Imp)
272.63 kWh
$3.13
($95.9 total for this fill)
5.93 L/100 km
39.66 mpg (US)
47.6 mpg (Imp)
2.52 gal (US)/100 mi
849.76 Wh/mi
Filled with BP 98. Warm, dry, mostly city driving.
2024-01-03 644.68 km
400.59 mi
32.13 L
8.49 gal (US)
7.07 gal (Imp)
286.11 kWh
$3.04
($97.68 total for this fill)
4.98 L/100 km
47.18 mpg (US)
56.66 mpg (Imp)
2.12 gal (US)/100 mi
714.22 Wh/mi
Road trip. Filled with Mobil 98. Travel between 80-110kph, mostly 100. Weather warm and clear. 50-50 top down.
2024-01-02 205.33 km
127.59 mi
10.07 L
2.66 gal (US)
2.22 gal (Imp)
89.64 kWh
$3.12
($31.42 total for this fill)
4.9 L/100 km
47.97 mpg (US)
57.47 mpg (Imp)
2.08 gal (US)/100 mi
702.56 Wh/mi
Road trip. Driving mostly at 100kph, some city driving. Mostly top down. Warm weather.
2024-01-01 662.27 km
411.52 mi
31.85 L
8.41 gal (US)
7.01 gal (Imp)
283.42 kWh
$3.12
($99.37 total for this fill)
4.81 L/100 km
48.93 mpg (US)
58.7 mpg (Imp)
2.04 gal (US)/100 mi
688.72 Wh/mi
Road trip. Traveling at 80-110kph, mostly 100. 50-50 top down. Filled with Mobil 98. Weather warm and dry.
2023-12-30 586.5 km
364.43 mi
31.42 L
8.3 gal (US)
6.91 gal (Imp)
279.71 kWh
$2.98
($93.63 total for this fill)
5.36 L/100 km
43.91 mpg (US)
52.74 mpg (Imp)
2.28 gal (US)/100 mi
767.53 Wh/mi
Local spirited driving. Filled with Mobil 98. Weather mixed rainy and clear, mostly warm.
2023-12-26 386.9 km
240.41 mi
24 L
6.34 gal (US)
5.28 gal (Imp)
213.66 kWh
$2.98
($71.52 total for this fill)
6.2 L/100 km
37.92 mpg (US)
45.53 mpg (Imp)
2.64 gal (US)/100 mi
888.73 Wh/mi
City driving, filled up just prior to road trip.
2023-12-07 431.2 km
267.94 mi
25.697 L
6.79 gal (US)
5.65 gal (Imp)
228.82 kWh
$3.27
($84.03 total for this fill)
5.96 L/100 km
39.46 mpg (US)
47.42 mpg (Imp)
2.53 gal (US)/100 mi
854 Wh/mi
2023-11-26 540.13 km
335.62 mi
32 L
8.45 gal (US)
7.04 gal (Imp)
284.77 kWh
$3.27
($104.64 total for this fill)
5.92 L/100 km
39.72 mpg (US)
47.67 mpg (Imp)
2.52 gal (US)/100 mi
848.49 Wh/mi
2023-11-04 510.43 km
317.17 mi
32.8 L
8.66 gal (US)
7.21 gal (Imp)
291.84 kWh
$3.27
($107.26 total for this fill)
6.43 L/100 km
36.62 mpg (US)
43.99 mpg (Imp)
2.73 gal (US)/100 mi
920.14 Wh/mi
Used car extensively for towing and moving. Filled with 98.
2023-10-19 539.32 km
335.12 mi
31.87 L
8.42 gal (US)
7.01 gal (Imp)
283.75 kWh
$3.256
($103.77 total for this fill)
5.91 L/100 km
39.8 mpg (US)
47.81 mpg (Imp)
2.51 gal (US)/100 mi
846.71 Wh/mi
Filled with 98 BP
2023-09-30 491.01 km
305.1 mi
31.75 L
8.39 gal (US)
6.98 gal (Imp)
282.74 kWh
$3.349
($106.33 total for this fill)
6.47 L/100 km
36.36 mpg (US)
43.71 mpg (Imp)
2.75 gal (US)/100 mi
926.71 Wh/mi
Filled with 98
2023-09-10 392.05 km
243.61 mi
21.99 L
5.81 gal (US)
4.84 gal (Imp)
195.8 kWh
$3.256
($71.6 total for this fill)
5.61 L/100 km
41.93 mpg (US)
50.33 mpg (Imp)
2.38 gal (US)/100 mi
803.74 Wh/mi
Road trip. Filled with npd 100.
2023-09-09 452.57 km
281.21 mi
27.54 L
7.28 gal (US)
6.06 gal (Imp)
245.34 kWh
$3.269
($90.03 total for this fill)
6.09 L/100 km
38.63 mpg (US)
46.4 mpg (Imp)
2.59 gal (US)/100 mi
872.44 Wh/mi
South island road trip. Filled with npd 100.
2023-09-04 380.05 km
236.15 mi
23.06 L
6.09 gal (US)
5.07 gal (Imp)
205.23 kWh
$3.389
($78.15 total for this fill)
6.07 L/100 km
38.78 mpg (US)
46.58 mpg (Imp)
2.58 gal (US)/100 mi
869.07 Wh/mi
Filled with BP 98, before getting on ferry for road trip on south island.
2023-08-31 518.26 km
322.03 mi
31.6 L
8.35 gal (US)
6.95 gal (Imp)
281.4 kWh
$3.249
($102.67 total for this fill)
6.1 L/100 km
38.57 mpg (US)
46.34 mpg (Imp)
2.59 gal (US)/100 mi
873.83 Wh/mi
Filled with 98
2023-08-04 566.06 km
351.73 mi
31.56 L
8.34 gal (US)
6.94 gal (Imp)
281.06 kWh
$3.109
($98.12 total for this fill)
5.58 L/100 km
42.17 mpg (US)
50.68 mpg (Imp)
2.37 gal (US)/100 mi
799.08 Wh/mi
Filled with 98
2023-07-29 527.01 km
327.47 mi
30.81 L
8.14 gal (US)
6.78 gal (Imp)
274.32 kWh
$3.007
($92.65 total for this fill)
5.85 L/100 km
40.23 mpg (US)
48.3 mpg (Imp)
2.49 gal (US)/100 mi
837.7 Wh/mi
Road trip, mountain driving, often below freezing. Filled with 95.
2023-07-23 497.82 km
309.33 mi
31.6 L
8.35 gal (US)
6.95 gal (Imp)
281.4 kWh
$2.949
($93.19 total for this fill)
6.35 L/100 km
37.05 mpg (US)
44.51 mpg (Imp)
2.7 gal (US)/100 mi
909.71 Wh/mi
Local driving. Rainy, windy, 5-12c. Filled with Mobil 98.
2023-06-19 554.77 km
344.72 mi
32.96 L
8.71 gal (US)
7.25 gal (Imp)
293.53 kWh
$2.61
($86.03 total for this fill)
5.94 L/100 km
39.58 mpg (US)
47.55 mpg (Imp)
2.53 gal (US)/100 mi
851.5 Wh/mi
2023-05-28 466.9 km
290.12 mi
26.42 L
6.98 gal (US)
5.81 gal (Imp)
235.23 kWh
$2.61
($68.96 total for this fill)
5.66 L/100 km
41.56 mpg (US)
49.93 mpg (Imp)
2.41 gal (US)/100 mi
810.8 Wh/mi
Mostly road trip, some in-town driving. Cool, wet weather. Filled with 98.
2023-05-13 495.77 km
308.06 mi
26.63 L
7.03 gal (US)
5.86 gal (Imp)
236.91 kWh
$2.489
($66.28 total for this fill)
5.37 L/100 km
43.82 mpg (US)
52.57 mpg (Imp)
2.28 gal (US)/100 mi
769.04 Wh/mi
Filled with 95 octane Z. Road trip, mostly uphill.
2023-05-12 437 km
271.54 mi
26.9 L
7.11 gal (US)
5.92 gal (Imp)
239.61 kWh
$2.62
($70.48 total for this fill)
6.16 L/100 km
38.19 mpg (US)
45.87 mpg (Imp)
2.62 gal (US)/100 mi
882.41 Wh/mi
Filled with Z 95 octane. First 100km is local driving, remainder is road trip.
2023-05-07 484.6 km
301.12 mi
32.34 L
8.54 gal (US)
7.11 gal (Imp)
287.8 kWh
$2.74
($88.61 total for this fill)
6.67 L/100 km
35.26 mpg (US)
42.35 mpg (Imp)
2.84 gal (US)/100 mi
955.77 Wh/mi
Local, spirited driving. Filled with Mobil 98.
2023-04-15 528.63 km
328.48 mi
31.66 L
8.36 gal (US)
6.96 gal (Imp)
281.73 kWh
$2.79
($88.33 total for this fill)
5.99 L/100 km
39.29 mpg (US)
47.2 mpg (Imp)
2.55 gal (US)/100 mi
857.68 Wh/mi
2023-03-23 523.96 km
325.57 mi
33.22 L
8.78 gal (US)
7.31 gal (Imp)
295.89 kWh
$2.67
($88.7 total for this fill)
6.34 L/100 km
37.08 mpg (US)
44.54 mpg (Imp)
2.7 gal (US)/100 mi
908.84 Wh/mi
100% local city driving, short tips. Weather mix of clear and rainy.
2023-03-04 462.23 km
287.22 mi
31.55 L
8.33 gal (US)
6.94 gal (Imp)
280.72 kWh
$2.88
($90.86 total for this fill)
6.83 L/100 km
34.48 mpg (US)
41.39 mpg (Imp)
2.9 gal (US)/100 mi
977.37 Wh/mi
Mostly short trips to pick up hardware, lots of rain.
2023-01-30 168.82 km
104.9 mi
11.79 L
3.11 gal (US)
2.59 gal (Imp)
104.81 kWh
$2.82
($33.25 total for this fill)
6.98 L/100 km
33.73 mpg (US)
40.5 mpg (Imp)
2.96 gal (US)/100 mi
999.14 Wh/mi
Short fill, exclusively from towing. Towed large, heavy cargo trailer through the mountains, at 80-100kph.
2023-01-30 498.84 km
309.96 mi
30.53 L
8.07 gal (US)
6.72 gal (Imp)
271.96 kWh
$2.82
($86.09 total for this fill)
6.12 L/100 km
38.41 mpg (US)
46.13 mpg (Imp)
2.6 gal (US)/100 mi
877.4 Wh/mi
Summer weather, mostly clear. Used car extensively for local trips and moving to a new house.
2023-01-19 564.33 km
350.66 mi
33.26 L
8.79 gal (US)
7.32 gal (Imp)
296.22 kWh
$2.78
($92.46 total for this fill)
5.89 L/100 km
39.89 mpg (US)
47.9 mpg (Imp)
2.51 gal (US)/100 mi
844.75 Wh/mi
Filled with 98. Temperature around 20 degrees. Mostly clear.
2023-01-01 449 km
279 mi
25.08 L
6.63 gal (US)
5.52 gal (Imp)
223.43 kWh
$2.78
($69.72 total for this fill)
5.59 L/100 km
42.08 mpg (US)
50.54 mpg (Imp)
2.38 gal (US)/100 mi
800.82 Wh/mi
Last tank of road trip. Filled with 98. Warm, clear, roof down, cargo rack behind car.
2022-12-31 331.8 km
206.17 mi
17.49 L
4.62 gal (US)
3.85 gal (Imp)
155.69 kWh
$3
($52.47 total for this fill)
5.27 L/100 km
44.63 mpg (US)
53.55 mpg (Imp)
2.24 gal (US)/100 mi
755.15 Wh/mi
Road trip. Filled with 98. Warm, clear, roof down, cargo rack behind car.
2022-12-30 594.5 km
369.41 mi
33.99 L
8.98 gal (US)
7.48 gal (Imp)
302.63 kWh
$2.81
($95.51 total for this fill)
5.72 L/100 km
41.14 mpg (US)
49.39 mpg (Imp)
2.43 gal (US)/100 mi
819.23 Wh/mi
Road trip. Filled with 95. Warm, clear, roof down, cargo rack behind car.
2022-12-29 541 km
336.16 mi
32.63 L
8.62 gal (US)
7.18 gal (Imp)
290.49 kWh
$2.86
($93.32 total for this fill)
6.03 L/100 km
39 mpg (US)
46.82 mpg (Imp)
2.56 gal (US)/100 mi
864.14 Wh/mi
Road trip. Filled with 95. Warm, clear, roof down, cargo rack behind car.
2022-12-27 533.4 km
331.44 mi
28.6 L
7.56 gal (US)
6.29 gal (Imp)
254.77 kWh
$2.49
($71.21 total for this fill)
5.36 L/100 km
43.84 mpg (US)
52.69 mpg (Imp)
2.28 gal (US)/100 mi
768.68 Wh/mi
Road trip. Filled with 95. Warm, clear, roof down, cargo rack behind car.
2022-12-26 599 km
372.2 mi
32.99 L
8.72 gal (US)
7.26 gal (Imp)
293.86 kWh
$2.55
($84.12 total for this fill)
5.51 L/100 km
42.68 mpg (US)
51.27 mpg (Imp)
2.34 gal (US)/100 mi
789.52 Wh/mi
Road trip. Filled with 95. Warm, clear, roof down, cargo rack behind car.
2022-12-24 163.3 km
101.47 mi
8.96 L
2.37 gal (US)
1.97 gal (Imp)
79.87 kWh
$2.68
($24.01 total for this fill)
5.49 L/100 km
42.81 mpg (US)
51.51 mpg (Imp)
2.34 gal (US)/100 mi
787.13 Wh/mi
Short fill. Filled with 98. Warm, clear, roof down, spirited local driving.
2022-12-19 537.8 km
334.17 mi
32.95 L
8.7 gal (US)
7.25 gal (Imp)
293.19 kWh
$2.59
($85.34 total for this fill)
6.13 L/100 km
38.41 mpg (US)
46.09 mpg (Imp)
2.6 gal (US)/100 mi
877.37 Wh/mi
Filled with 98. Mix of city and spirited local driving. Often rainy.
2022-12-02 551.6 km
342.75 mi
33.32 L
8.8 gal (US)
7.33 gal (Imp)
296.56 kWh
$2.74
($91.3 total for this fill)
6.04 L/100 km
38.95 mpg (US)
46.76 mpg (Imp)
2.57 gal (US)/100 mi
865.24 Wh/mi
Filled with 93. Mix of city and spirited driving.
2022-11-25 536.2 km
333.18 mi
28.44 L
7.51 gal (US)
6.26 gal (Imp)
253.09 kWh
$2.91
($82.76 total for this fill)
5.3 L/100 km
44.36 mpg (US)
53.22 mpg (Imp)
2.25 gal (US)/100 mi
759.62 Wh/mi
Filled with 98. Mixed highway and city driving. Used for a road trip.
2022-11-19 534.23 km
331.96 mi
28.81 L
7.61 gal (US)
6.34 gal (Imp)
256.46 kWh
$3.11
($89.6 total for this fill)
5.39 L/100 km
43.62 mpg (US)
52.36 mpg (Imp)
2.29 gal (US)/100 mi
772.56 Wh/mi
Road trip. Mostly driving at 100-110kph. Heavy rain. Varying altitude.
2022-11-18 585.49 km
363.81 mi
33.01 L
8.72 gal (US)
7.26 gal (Imp)
293.86 kWh
$3.05
($100.68 total for this fill)
5.64 L/100 km
41.72 mpg (US)
50.11 mpg (Imp)
2.4 gal (US)/100 mi
807.73 Wh/mi
Road trip, mostly driving at 100-105kph, increased in altitude approx 1500m. Mostly heavy rain. Filled with 98.
2022-11-17 370.39 km
230.15 mi
21.14 L
5.58 gal (US)
4.65 gal (Imp)
188.05 kWh
$2.82
($59.61 total for this fill)
5.71 L/100 km
41.25 mpg (US)
49.49 mpg (Imp)
2.42 gal (US)/100 mi
817.08 Wh/mi
Short fill. Tank was on 95RON. Mostly spirited local driving. Next tank is approx 50-50 95 and 98.
2022-11-06 531.08 km
330 mi
33.72 L
8.91 gal (US)
7.42 gal (Imp)
300.27 kWh
$2.55
($85.99 total for this fill)
6.35 L/100 km
37.04 mpg (US)
44.47 mpg (Imp)
2.7 gal (US)/100 mi
909.91 Wh/mi
Filled with 95. Possibly overfilled tank. First full tank with diffuser and underbody panels. Mostly leisure driving, often spirited.
2022-10-24 498.5 km
309.75 mi
32.16 L
8.5 gal (US)
7.07 gal (Imp)
286.45 kWh
$2.86
($91.98 total for this fill)
6.45 L/100 km
36.44 mpg (US)
43.81 mpg (Imp)
2.74 gal (US)/100 mi
924.78 Wh/mi
Filled with 98. Mixed city and highway driving. Lots of spirited driving.
2022-10-12 290.56 km
180.55 mi
16.91 L
4.47 gal (US)
3.72 gal (Imp)
150.64 kWh
$2.95
($49.88 total for this fill)
5.82 L/100 km
40.39 mpg (US)
48.53 mpg (Imp)
2.48 gal (US)/100 mi
834.34 Wh/mi
Work trip. Driving mostly 100kph, through the rain, with the car heavily loaded.
2022-10-12 534.03 km
331.83 mi
31.34 L
8.28 gal (US)
6.89 gal (Imp)
279.04 kWh
$3.039
($95.24 total for this fill)
5.87 L/100 km
40.08 mpg (US)
48.16 mpg (Imp)
2.5 gal (US)/100 mi
840.91 Wh/mi
Work trip. Driving mostly 100kph, through the rain, with the car heavily loaded.
2022-10-08 515.31 km
320.2 mi
32.57 L
8.6 gal (US)
7.16 gal (Imp)
289.82 kWh
$2.97
($96.73 total for this fill)
6.32 L/100 km
37.23 mpg (US)
44.72 mpg (Imp)
2.69 gal (US)/100 mi
905.12 Wh/mi
Mixed city, highway, and spirited driving. No longer being used daily. Filled with 98.
2022-09-27 530.16 km
329.43 mi
32.71 L
8.64 gal (US)
7.2 gal (Imp)
291.17 kWh
$2.97
($97.15 total for this fill)
6.17 L/100 km
38.13 mpg (US)
45.75 mpg (Imp)
2.62 gal (US)/100 mi
883.86 Wh/mi
Filled with 98
2022-09-19 494.67 km
307.37 mi
32.34 L
8.54 gal (US)
7.11 gal (Imp)
287.8 kWh
$2.97
($96.05 total for this fill)
6.54 L/100 km
35.99 mpg (US)
43.23 mpg (Imp)
2.78 gal (US)/100 mi
936.33 Wh/mi
Filled with with 98. Mostly rainy. Commuting to work.
2022-09-11 524.61 km
325.98 mi
32.24 L
8.52 gal (US)
7.09 gal (Imp)
287.12 kWh
$2.98
($96.08 total for this fill)
6.15 L/100 km
38.26 mpg (US)
45.98 mpg (Imp)
2.61 gal (US)/100 mi
880.79 Wh/mi
Filled with 98. Weather mostly not rainy, a bit warmer - 15ish most days. Lots of canyon driving.
2022-09-01 469.65 km
291.83 mi
28.91 L
7.64 gal (US)
6.36 gal (Imp)
257.47 kWh
$3.04
($87.89 total for this fill)
6.16 L/100 km
38.2 mpg (US)
45.89 mpg (Imp)
2.62 gal (US)/100 mi
882.26 Wh/mi
Mostly city driving, some highway, some canyon carving. Filled with 98. Weather mostly cloudy and cool, some rain.
2022-08-25 554.06 km
344.28 mi
33.06 L
8.73 gal (US)
7.27 gal (Imp)
294.2 kWh
$2.879
($95.18 total for this fill)
5.97 L/100 km
39.44 mpg (US)
47.36 mpg (Imp)
2.54 gal (US)/100 mi
854.54 Wh/mi
Filled with 98. Driving was approx 25% city, 25% spirited canyon carving, 50% 100kph country roads with a strong crosswind (~50-60kph).
2022-08-17 499.55 km
310.41 mi
31.47 L
8.31 gal (US)
6.92 gal (Imp)
280.05 kWh
$2.909
($91.55 total for this fill)
6.3 L/100 km
37.35 mpg (US)
44.86 mpg (Imp)
2.68 gal (US)/100 mi
902.19 Wh/mi
First full tank on new engine tune. 100% city driving. Rainy and wet ~40% of the time. Filled with 98.
2022-08-06 481.04 km
298.9 mi
30.71 L
8.11 gal (US)
6.76 gal (Imp)
273.31 kWh
$3.059
($93.94 total for this fill)
6.38 L/100 km
36.86 mpg (US)
44.22 mpg (Imp)
2.71 gal (US)/100 mi
914.39 Wh/mi
Later half of tank is first with new tune. Weather generally bad, rain and wind. 100% city driving, up and down the hill to Wellington, plus city traffic.
2022-07-29 420.33 km
261.18 mi
26.78 L
7.07 gal (US)
5.89 gal (Imp)
238.26 kWh
$3.059
($81.92 total for this fill)
6.37 L/100 km
36.94 mpg (US)
44.34 mpg (Imp)
2.71 gal (US)/100 mi
912.24 Wh/mi
Filled with 98. 100% city driving, often windy and rainy, coldest part of winter. Lots of short trips, a few spirited high RPM drives.
2022-07-19 458.67 km
285 mi
30.4 L
8.03 gal (US)
6.69 gal (Imp)
270.61 kWh
$3.38
($102.75 total for this fill)
6.63 L/100 km
35.49 mpg (US)
42.6 mpg (Imp)
2.82 gal (US)/100 mi
949.51 Wh/mi
Tire pressure at 40PSI half of the tank, then 44PSI. A bit of rain, temperature mostly 10-15c.
2022-07-07 537.74 km
334.14 mi
32.56 L
8.6 gal (US)
7.16 gal (Imp)
289.82 kWh
$3.48
($113.31 total for this fill)
6.05 L/100 km
38.85 mpg (US)
46.67 mpg (Imp)
2.57 gal (US)/100 mi
867.36 Wh/mi
25% highway driving (averaged 47.3mpg), 75% low speed city driving. Filled up with 98RON.
2022-07-01 431.1 km
267.87 mi
26.48 L
7 gal (US)
5.82 gal (Imp)
235.9 kWh
$3.29
($87.12 total for this fill)
6.14 L/100 km
38.27 mpg (US)
46.03 mpg (Imp)
2.61 gal (US)/100 mi
880.65 Wh/mi
Baseline tank. Untouched tyre pressure. 95 RON (91 AKI) fuel. 120kg / 265lbs of junk in the car. Entire tank was driven with the top down. Climbed to 825m / 2700ft.

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


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