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Fuel log graph
Efficiency log for: MPGiata - 1990 Mazda Miata
  • Lifetime Fuel Economy: 50.7 mpg (US), 4.6 L/100 km, 60.9 mpg (Imp)
  • 90-day Fuel Economy: 52.8 mpg (US), 4.5 L/100 km, 63.4 mpg (Imp)
  • 3-tank Fuel Economy: 52.4 mpg (US), 4.5 L/100 km, 62.9 mpg (Imp)
  • EPA Combined Rating / % over rating: 24 mpg (US) / 120% (based on 90-day fuel economy)
  • Total fills: 13
  • Total fuel used: 112.37 gal (US), 425.4 L
  • Total distance traveled: 5696.2 mi. / 9167.1 km
  • Average tank distance: 438.2 mi. / 705.2 km
Fill date Distance Fill amount Price Fuel Economy Details
2019-10-17 737.45 km
458.23 mi
35.506 L
9.38 gal (US)
7.81 gal (Imp)
316.11 kWh
4.81 L/100 km
48.85 mpg (US)
58.67 mpg (Imp)
2.05 gal (US)/100 mi
689.85 Wh/mi
3 clicks, Cooler weather, more trips roof up. Mark drove ~50 km of this tank. Trips to Kville, lake xN, C&P's. 90% scenic route driving, 10% local, 50 PSI.
2019-10-01 1133.1 km
704.08 mi
50.397 L
13.31 gal (US)
11.09 gal (Imp)
448.55 kWh
4.45 L/100 km
52.9 mpg (US)
63.49 mpg (Imp)
1.89 gal (US)/100 mi
637.07 Wh/mi
3 clicks, Cooler weather, 1 trip from lake with kayak (roof up). Trips to lake, M's cottage, Merrick. 90% scenic route driving, 10% local, 90% top down with tonneau cover. Decreased to 50 PSI partway through tank, drove first half with MPGuino off. CEL came on briefly after oil spilled on valve cover (contaminated plug wires?)
2019-08-25 784.75 km
487.62 mi
33.377 L
8.82 gal (US)
7.34 gal (Imp)
297.23 kWh
4.25 L/100 km
55.29 mpg (US)
66.43 mpg (Imp)
1.81 gal (US)/100 mi
609.55 Wh/mi
3 clicks, More hot (upper 20's) weather, 0 trips with kayak. Trips to lake, M's cottage, Ktown. More driving with side windows up. All scenic route driving, except ~15 km local, 95% top down with tonneau cover, 55 PSI
2019-08-13 850.33 km
528.37 mi
37.088 L
9.8 gal (US)
8.16 gal (Imp)
330.26 kWh
4.36 L/100 km
53.92 mpg (US)
64.75 mpg (Imp)
1.85 gal (US)/100 mi
625.05 Wh/mi
4 clicks, More hot weather (upper 20's), 1 trip with kayak. Trips to lake, M's cottage, Montreal, Ktown. All scenic route driving, except ~25 km Montreal city, ~40 km HWY 720. 95% top down with tonneau cover
2019-08-03 952.45 km
591.82 mi
42.224 L
11.15 gal (US)
9.29 gal (Imp)
375.76 kWh
4.43 L/100 km
53.08 mpg (US)
63.71 mpg (Imp)
1.88 gal (US)/100 mi
634.92 Wh/mi
3 clicks, Includes end of 2018 tank + very hot (upper 20's) Jul/Aug, 2 trips with kayak. Includes 10L splash last week. Trips to lake, locks, etc. All scenic route driving, except ~25 km local. 100% top down 2019 portion with tonneau cover, 55 PSI. So: 10L reg (mostly used up) + 20 L prem + 12L reg.
2018-10-14 813.775 km
505.66 mi
37.419 L
9.89 gal (US)
8.23 gal (Imp)
333.29 kWh
4.6 L/100 km
51.13 mpg (US)
61.44 mpg (Imp)
1.96 gal (US)/100 mi
659.12 Wh/mi
3 clicks (~.2L overflow), Includes 2nd trip with kayak at ~15C. More trips to lake, locks, etc. All scenic route driving, except ~25 km local. 90% top down, low/mid teens C, with tonneau cover most trips. New mod: more extensive "removable" grille block for cooler temps.
2018-09-21 835.28 km
519.02 mi
37.293 L
9.85 gal (US)
8.2 gal (Imp)
331.95 kWh
4.46 L/100 km
52.69 mpg (US)
63.3 mpg (Imp)
1.9 gal (US)/100 mi
639.57 Wh/mi
4 clicks (visible fuel). First trip with kayak at ~10-15 C. Rest were milder trips to lake, etc. One round trip loaded with tools, outboard motor etc. All scenic route driving, except ~25 km sub/urban trips. All but one trip top down, mid/upper teens C. New mod: tonneau cover most trips
2018-09-08 785.83 km
488.29 mi
36.993 L
9.77 gal (US)
8.14 gal (Imp)
329.25 kWh
4.71 L/100 km
49.98 mpg (US)
59.99 mpg (Imp)
2 gal (US)/100 mi
674.29 Wh/mi
4 clicks (visible fuel), half was end of cool last year, including last trip top up to S Falls ~15C. All scenic route driving, except ~50 local. No new mods this tank. Trips: to lake x2, Picton, all top down, mid/upper 20's C.
2017-10-18 695.53 km
432.18 mi
32.092 L
8.48 gal (US)
7.06 gal (Imp)
285.78 kWh
4.61 L/100 km
50.96 mpg (US)
61.22 mpg (Imp)
1.96 gal (US)/100 mi
661.25 Wh/mi
4 clicks (visible fuel), includes 200ml injector cleaner additive. Warm weather first 2/3 of tank, cool last part. Scenic route driving. New mods this tank: synth fluid changed: oil (5w20 2/3, 10w30 1/3), trans (GM Synchromesh + 70w90); diff 70w90); MAF tweaked; WAI last 100 km; first FULL tank with 15 inch wheels; rear skirts on for ~100 km.
2017-09-18 618.22 km
384.14 mi
29.164 L
7.7 gal (US)
6.42 gal (Imp)
259.49 kWh
4.72 L/100 km
49.89 mpg (US)
59.83 mpg (Imp)
2 gal (US)/100 mi
675.51 Wh/mi
5 clicks (visible fuel). Warm (hot) and unusually wind-less weather. Back road driving. NEW mods this tank: larger rear wheels, rear wheel discs. MPGuino calibration (for larger wheels): 8208 VSS pulses/mile; 250300000 Microsec/Gal this tank, dropped to 240000000 at fill-up (+4.1% will make previous 47 mpg indicated = 45.1 new indicated.)

Trips include: Ivy Lea/Gan (faster than usual); Barrhaven Mazda (15km 416 @ ~95) - S.Falls; C&P's - Charleston; Fort Town
2017-09-11 458.64 km
284.99 mi
24.4 L
6.45 gal (US)
5.37 gal (Imp)
217.37 kWh
5.32 L/100 km
44.18 mpg (US)
53.07 mpg (Imp)
2.26 gal (US)/100 mi
762.73 Wh/mi
5 clicks (visible fuel), includes 1.5L top-up for failed MPGuino calibration; back road driving, 1 trip to Kville (C&T) (~200 km @ 75-78 kph DWL), Existing mods all of this tank: 50 PSI; AC/PS del; 1 mirror del; partial g.b.; front plate relocated. NEW mods 2nd half of tank: air dam; Enasaves on front (last 50 km); driver's mirror del & oil change at very end.
2017-08-30 238.14 km
147.97 mi
12.861 L
3.4 gal (US)
2.83 gal (Imp)
114.58 kWh
5.4 L/100 km
43.52 mpg (US)
52.29 mpg (Imp)
2.3 gal (US)/100 mi
774.35 Wh/mi
4 clicks (visible fuel); mostly back road driving, 1 trip to C&P's (~200 km @ 75-78 kph DWL), Manoll's run; calibrating MPGUino HWY 2. 5 Mods most of this tank: 50 PSI; AC/PS del; 1 mirror del; partial g.b.; front plate relocated.
2016-11-20 263.6 km
163.79 mi
16.535 L
4.37 gal (US)
3.64 gal (Imp)
147.27 kWh
6.27 L/100 km
37.48 mpg (US)
45 mpg (Imp)
2.67 gal (US)/100 mi
899.14 Wh/mi
See this post for driving techniques and route details.

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


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