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Fuel log graph
Efficiency log for: MPGiata - 1990 Mazda Miata
  • Lifetime Fuel Economy: 48.8 mpg (US), 4.8 L/100 km, 58.7 mpg (Imp)
  • 90-day Fuel Economy: 51.3 mpg (US), 4.6 L/100 km, 61.6 mpg (Imp)
  • 3-tank Fuel Economy: 51.3 mpg (US), 4.6 L/100 km, 61.6 mpg (Imp)
  • EPA Combined Rating / % over rating: 24 mpg (US) / 113.6% (based on 90-day fuel economy)
  • Total fills: 8
  • Total fuel used: 59.91 gal (US), 226.8 L
  • Total distance traveled: 2926 mi. / 4709 km
  • Average tank distance: 365.8 mi. / 588.6 km
Fill date Distance Fill amount Price Fuel Economy Details
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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