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Fuel log graph
Efficiency log for: ZoomFreakingZoom - 1988 Mazda RX7 Convertible
  • Lifetime Fuel Economy: 21.7 mpg (US), 10.9 L/100 km, 26 mpg (Imp)
  • 90-day Fuel Economy: 19 mpg (US), 12.4 L/100 km, 22.8 mpg (Imp)
  • 3-tank Fuel Economy: 18.7 mpg (US), 12.6 L/100 km, 22.5 mpg (Imp)
  • EPA Combined Rating / % over rating: 18 mpg (US) / 5.7% (based on 90-day fuel economy)
  • Total fills: 25
  • Total fuel used: 328.24 gal (US), 1242.5 L
  • Total distance traveled: 7105 mi. / 11434.4 km
  • Average tank distance: 284.2 mi. / 457.4 km
Fill date Distance Fill amount Price Fuel Economy Details
2013-01-26 253.3 mi
407.65 km
13.91 gal (US)
11.58 gal (Imp)
52.66 L
468.77 kWh
18.21 mpg (US)
21.87 mpg (Imp)
12.92 L/100 km
5.49 gal (US)/100 mi
1850.65 Wh/mi
76-->fred meyer gas
2013-01-17 254 mi
408.77 km
13.775 gal (US)
11.47 gal (Imp)
52.14 L
464.22 kWh
18.44 mpg (US)
22.14 mpg (Imp)
12.76 L/100 km
5.42 gal (US)/100 mi
1827.64 Wh/mi
cheveron-->76
2013-01-09 267.9 mi
431.14 km
13.778 gal (US)
11.47 gal (Imp)
52.16 L
464.32 kWh
19.44 mpg (US)
23.36 mpg (Imp)
12.1 L/100 km
5.14 gal (US)/100 mi
1733.18 Wh/mi
76-->cheveron
2013-01-02 244 mi
392.68 km
12.276 gal (US)
10.22 gal (Imp)
46.47 L
413.7 kWh
19.88 mpg (US)
23.87 mpg (Imp)
11.83 L/100 km
5.03 gal (US)/100 mi
1695.49 Wh/mi
Brownsville gas station-->76

Changed to heavier 16x8 rims with 225/50's from 15x6.5 with 205/60's mid tank. New tires had low pressure (~20-25psi). Pumped up to 35-38 during fill up.
2012-12-21 82.7 mi
133.09 km
5.5 gal (US)
4.58 gal (Imp)
20.82 L
185.35 kWh
15.04 mpg (US)
18.06 mpg (Imp)
15.64 L/100 km
6.65 gal (US)/100 mi
2241.23 Wh/mi
76-->Brownsville gas station.

Changed fuel injectors. Several test drives on cold starts. Lots of idling. Fuel spillage. Short tank.
2012-12-05 292.4 mi
470.57 km
14.921 gal (US)
12.42 gal (Imp)
56.48 L
502.84 kWh
19.6 mpg (US)
23.54 mpg (Imp)
12 L/100 km
5.1 gal (US)/100 mi
1719.7 Wh/mi
76-->a different 76
2012-11-27 290.4 mi
467.35 km
14.406 gal (US)
11.99 gal (Imp)
54.53 L
485.48 kWh
20.16 mpg (US)
24.22 mpg (Imp)
11.67 L/100 km
4.96 gal (US)/100 mi
1671.76 Wh/mi
76-->76
2012-11-20 249.5 mi
401.53 km
12.761 gal (US)
10.63 gal (Imp)
48.31 L
430.05 kWh
19.55 mpg (US)
23.47 mpg (Imp)
12.03 L/100 km
5.11 gal (US)/100 mi
1723.65 Wh/mi
76-->76
2012-11-13 275.3 mi
443.05 km
13.923 gal (US)
11.59 gal (Imp)
52.7 L
469.21 kWh
19.77 mpg (US)
23.75 mpg (Imp)
11.89 L/100 km
5.06 gal (US)/100 mi
1704.36 Wh/mi
76-->76
2012-11-07 289.5 mi
465.91 km
14.46 gal (US)
12.04 gal (Imp)
54.74 L
487.3 kWh
20.02 mpg (US)
24.04 mpg (Imp)
11.75 L/100 km
4.99 gal (US)/100 mi
1683.25 Wh/mi
76-->Leathers
2012-10-29 272.7 mi
438.87 km
13.535 gal (US)
11.27 gal (Imp)
51.24 L
456.13 kWh
20.15 mpg (US)
24.2 mpg (Imp)
11.68 L/100 km
4.96 gal (US)/100 mi
1672.64 Wh/mi
Safeway-->76
2012-10-22 302.4 mi
486.67 km
13.284 gal (US)
11.06 gal (Imp)
50.29 L
447.67 kWh
22.76 mpg (US)
27.34 mpg (Imp)
10.33 L/100 km
4.39 gal (US)/100 mi
1480.39 Wh/mi
Leathers-->Safeway
2012-10-17 279.3 mi
449.49 km
13.982 gal (US)
11.64 gal (Imp)
52.93 L
471.19 kWh
19.98 mpg (US)
23.99 mpg (Imp)
11.78 L/100 km
5.01 gal (US)/100 mi
1687.04 Wh/mi
Safeway-->Leathers
2012-10-08 296.8 mi
477.65 km
14.314 gal (US)
11.92 gal (Imp)
54.18 L
482.38 kWh
20.73 mpg (US)
24.9 mpg (Imp)
11.34 L/100 km
4.82 gal (US)/100 mi
1625.27 Wh/mi
Safeway-->Safeway
2012-10-01 309.8 mi
498.57 km
12.921 gal (US)
10.76 gal (Imp)
48.91 L
435.44 kWh
23.98 mpg (US)
28.79 mpg (Imp)
9.81 L/100 km
4.17 gal (US)/100 mi
1405.55 Wh/mi
Start: Texico, CA. End: Safeway, OR

End of trip
2012-09-30 288.3 mi
463.97 km
11.503 gal (US)
9.58 gal (Imp)
43.54 L
387.65 kWh
25.06 mpg (US)
30.09 mpg (Imp)
9.38 L/100 km
3.99 gal (US)/100 mi
1344.61 Wh/mi
Start: Cheveron, CA. End: Texico, CA.
2012-09-30 347.9 mi
559.89 km
12.883 gal (US)
10.73 gal (Imp)
48.77 L
434.16 kWh
27 mpg (US)
32.42 mpg (Imp)
8.71 L/100 km
3.7 gal (US)/100 mi
1247.94 Wh/mi
Start: Valero, CA. End: Cheveron, CA.

Possibly shut off early. Included city driving
2012-09-30 289.9 mi
466.55 km
11.976 gal (US)
9.97 gal (Imp)
45.33 L
403.59 kWh
24.21 mpg (US)
29.08 mpg (Imp)
9.72 L/100 km
4.13 gal (US)/100 mi
1392.17 Wh/mi
Start: Pilot, CA. End: Valero, CA

City driving at end of tank.
2012-09-28 315.4 mi
507.59 km
12.059 gal (US)
10.04 gal (Imp)
45.65 L
406.39 kWh
26.15 mpg (US)
31.41 mpg (Imp)
8.99 L/100 km
3.82 gal (US)/100 mi
1288.49 Wh/mi
Start: Texico, CA. End: Pilot, CA.
2012-09-28 348.1 mi
560.21 km
13.588 gal (US)
11.32 gal (Imp)
51.44 L
457.92 kWh
25.62 mpg (US)
30.75 mpg (Imp)
9.18 L/100 km
3.9 gal (US)/100 mi
1315.48 Wh/mi
Start: 76. End: Texico, CA.
2012-09-28 276.8 mi
445.47 km
12.577 gal (US)
10.47 gal (Imp)
47.61 L
423.84 kWh
22.01 mpg (US)
26.44 mpg (Imp)
10.69 L/100 km
4.54 gal (US)/100 mi
1531.21 Wh/mi
Start of trip to california.

Start: Brownsville gas station. End: 76.
2012-09-22 338 mi
543.96 km
16.217 gal (US)
13.5 gal (Imp)
61.39 L
546.51 kWh
20.84 mpg (US)
25.04 mpg (Imp)
11.29 L/100 km
4.8 gal (US)/100 mi
1616.89 Wh/mi
Start: Arco. End: Brownsville gas station.

2.417 gal super from cheveron.

Raced in autocross on 9/16
2012-09-12 392 mi
630.86 km
16.284 gal (US)
13.56 gal (Imp)
61.64 L
548.77 kWh
24.07 mpg (US)
28.91 mpg (Imp)
9.77 L/100 km
4.15 gal (US)/100 mi
1399.92 Wh/mi
Start: Safeway gas. End: Arco.
2012-08-27 318.7 mi
512.9 km
14.52 gal (US)
12.09 gal (Imp)
54.96 L
489.32 kWh
21.95 mpg (US)
26.36 mpg (Imp)
10.72 L/100 km
4.56 gal (US)/100 mi
1535.36 Wh/mi
Start: Town Pump End: Safeway gas
2012-08-19 229.9 mi
369.99 km
8.883 gal (US)
7.4 gal (Imp)
33.63 L
299.36 kWh
25.88 mpg (US)
31.07 mpg (Imp)
9.09 L/100 km
3.86 gal (US)/100 mi
1302.13 Wh/mi
Start: Town Pump End: Town pump
Over the mountain pass and back, heavy car (3250lbs)

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


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