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Fuel log graph
Efficiency log for: S13 - 1993 Nissan 240sx base
  • Lifetime Fuel Economy: 28.7 mpg (US), 8.2 L/100 km, 34.5 mpg (Imp)
  • 90-day Fuel Economy: 26.6 mpg (US), 8.8 L/100 km, 32 mpg (Imp)
  • 3-tank Fuel Economy: 26.6 mpg (US), 8.8 L/100 km, 32 mpg (Imp)
  • EPA Combined Rating / % over rating: 22 mpg (US) / 21% (based on 90-day fuel economy)
  • Total fills: 51
  • Average cost per gal/L: $3.84 per gal (US); $0.00 per L (price data entered for 50 fill/s)
  • Average cost per fill: $37.46
  • Average distance cost: $0.13 per mi. / $0.08 per km
  • Total fuel used: 493.13 gal (US), 1866.7 L
  • Total distance traveled: 14156.5 mi. / 22782.8 km
  • Total cost: $1,872.85
  • Total fuel saved vs. EPA: 150.3 gal. (US) / 568.9 L
  • Total saved: $577.15 (based on avg. cost per gal./L)
  • Average tank distance: 277.6 mi. / 446.7 km
Fill date Distance Fill amount Price Fuel Economy Details
2017-11-07 302.7 mi
487.15 km
12.035 gal (US)
10.02 gal (Imp)
45.56 L
405.58 kWh
$3.299
($39.7 total for this fill)
25.15 mpg (US)
30.21 mpg (Imp)
9.35 L/100 km
3.98 gal (US)/100 mi
1339.87 Wh/mi
bubble in t-stat, made it look like it was overheating. Pulled over, played with coolant, burped system, ran for 10-15 and revved to burp.
2017-10-03 273.5 mi
440.16 km
9.838 gal (US)
8.19 gal (Imp)
37.24 L
331.54 kWh
$3.099
($30.49 total for this fill)
27.8 mpg (US)
33.39 mpg (Imp)
8.46 L/100 km
3.6 gal (US)/100 mi
1212.21 Wh/mi
2017-08-29 297 mi
477.98 km
10.919 gal (US)
9.09 gal (Imp)
41.33 L
367.97 kWh
$3.159
($34.49 total for this fill)
27.2 mpg (US)
32.67 mpg (Imp)
8.65 L/100 km
3.68 gal (US)/100 mi
1238.96 Wh/mi
2017-07-25 289.1 mi
465.26 km
10.96 gal (US)
9.13 gal (Imp)
41.49 L
369.35 kWh
$2.99
($32.77 total for this fill)
26.38 mpg (US)
31.66 mpg (Imp)
8.92 L/100 km
3.79 gal (US)/100 mi
1277.59 Wh/mi
2017-07-10 322.3 mi
518.69 km
11.3 gal (US)
9.41 gal (Imp)
42.78 L
380.81 kWh
$2.959
($33.44 total for this fill)
28.52 mpg (US)
34.25 mpg (Imp)
8.25 L/100 km
3.51 gal (US)/100 mi
1181.54 Wh/mi
Regular driving, not particularly aggressive, nor defensive.

Just repaired a leaky (torn) fuel return line, this was likely hurting mpg. Also drained and refilled trans with fresh redline trans fluid. car seems to accelerate more smoothly. probably my imagination.
2017-06-27 319.2 mi
513.7 km
11.24 gal (US)
9.36 gal (Imp)
42.55 L
378.79 kWh
$3.099
($34.83 total for this fill)
28.4 mpg (US)
34.1 mpg (Imp)
8.28 L/100 km
3.52 gal (US)/100 mi
1186.69 Wh/mi
2015-11-08 284.1 mi
457.21 km
10.596 gal (US)
8.82 gal (Imp)
40.11 L
357.09 kWh
$2.799
($29.66 total for this fill)
26.81 mpg (US)
32.21 mpg (Imp)
8.77 L/100 km
3.73 gal (US)/100 mi
1256.92 Wh/mi
2015-04-05 219.1 mi
352.61 km
8.901 gal (US)
7.41 gal (Imp)
33.69 L
299.96 kWh
$3.259
($29.01 total for this fill)
24.62 mpg (US)
29.57 mpg (Imp)
9.55 L/100 km
4.06 gal (US)/100 mi
1369.06 Wh/mi
2014-09-27 279.3 mi
449.49 km
10.294 gal (US)
8.57 gal (Imp)
38.97 L
346.91 kWh
$3.799
($39.11 total for this fill)
27.13 mpg (US)
32.59 mpg (Imp)
8.67 L/100 km
3.69 gal (US)/100 mi
1242.07 Wh/mi
First tank since vac line fix - I'm suspicious that the line "repaired" was just put back on, and is loose again, starting to see wobbly idle on decel in N
2014-08-02 300.25 mi
483.21 km
10.13 gal (US)
8.44 gal (Imp)
38.35 L
341.38 kWh
$3.99
($40.42 total for this fill)
29.64 mpg (US)
35.57 mpg (Imp)
7.94 L/100 km
3.37 gal (US)/100 mi
1136.99 Wh/mi
Found a vacuum line problem, fixed it. Also cleaned out the intake manifold. Plenty of debris in there.
2014-07-03 276.5 mi
444.98 km
10.79 gal (US)
8.98 gal (Imp)
40.84 L
363.62 kWh
$4.159
($44.88 total for this fill)
25.63 mpg (US)
30.79 mpg (Imp)
9.18 L/100 km
3.9 gal (US)/100 mi
1315.08 Wh/mi
2013-12-30 227 mi
365.32 km
9.873 gal (US)
8.22 gal (Imp)
37.37 L
332.72 kWh
$3.679
($36.32 total for this fill)
22.99 mpg (US)
27.62 mpg (Imp)
10.23 L/100 km
4.35 gal (US)/100 mi
1465.73 Wh/mi
Driving to and from the ferry - short drive, cold the whole way.
2013-12-02 243.6 mi
392.04 km
10.251 gal (US)
8.53 gal (Imp)
38.8 L
345.46 kWh
$3.499
($35.87 total for this fill)
23.76 mpg (US)
28.56 mpg (Imp)
9.9 L/100 km
4.21 gal (US)/100 mi
1418.14 Wh/mi
New, short drive to work. Car doesn't even get to warm up. Up a big hill, with some traffic. 5 mile total trip each way.
2013-10-25 289.4 mi
465.74 km
10.109 gal (US)
8.42 gal (Imp)
38.27 L
340.67 kWh
$3.759
($38 total for this fill)
28.63 mpg (US)
34.37 mpg (Imp)
8.22 L/100 km
3.49 gal (US)/100 mi
1177.16 Wh/mi
2013-10-05 267.7 mi
430.82 km
8.785 gal (US)
7.31 gal (Imp)
33.25 L
296.05 kWh
$3.899
($34.25 total for this fill)
30.47 mpg (US)
36.62 mpg (Imp)
7.72 L/100 km
3.28 gal (US)/100 mi
1105.9 Wh/mi
2013-09-30 286.25 mi
460.67 km
9.035 gal (US)
7.52 gal (Imp)
34.2 L
304.48 kWh
$3.959
($35.77 total for this fill)
31.68 mpg (US)
38.07 mpg (Imp)
7.42 L/100 km
3.16 gal (US)/100 mi
1063.69 Wh/mi
2013-09-23 338.8 mi
545.25 km
11.339 gal (US)
9.44 gal (Imp)
42.92 L
382.12 kWh
$3.999
($45.34 total for this fill)
29.88 mpg (US)
35.89 mpg (Imp)
7.87 L/100 km
3.35 gal (US)/100 mi
1127.86 Wh/mi
Last half of the drive to Norcal, some driving around town, to and from Larkspur ferry terminal. A/C on for a good deal of the drive.
2013-09-16 197.8 mi
318.33 km
5.695 gal (US)
4.74 gal (Imp)
21.56 L
191.92 kWh
34.73 mpg (US)
41.73 mpg (Imp)
6.77 L/100 km
2.88 gal (US)/100 mi
970.27 Wh/mi
first 200 miles of the drive to norcal
2013-09-16 242.8 mi
390.75 km
8.35 gal (US)
6.95 gal (Imp)
31.61 L
281.4 kWh
$4.159
($34.73 total for this fill)
29.08 mpg (US)
34.94 mpg (Imp)
8.09 L/100 km
3.44 gal (US)/100 mi
1158.98 Wh/mi
Gassing up before the trip to Sebastopol
2013-09-05 278.85 mi
448.77 km
9.612 gal (US)
8 gal (Imp)
36.39 L
323.92 kWh
$3.839
($36.9 total for this fill)
29.01 mpg (US)
34.86 mpg (Imp)
8.11 L/100 km
3.45 gal (US)/100 mi
1161.63 Wh/mi
2013-08-20 305.1 mi
491.01 km
9.382 gal (US)
7.81 gal (Imp)
35.51 L
316.17 kWh
$3.799
($35.64 total for this fill)
32.52 mpg (US)
39.07 mpg (Imp)
7.23 L/100 km
3.08 gal (US)/100 mi
1036.28 Wh/mi
more highway, drove to the valley to hang with friends.
2013-08-08 262.1 mi
421.81 km
9.773 gal (US)
8.14 gal (Imp)
36.99 L
329.35 kWh
$3.899
($38.1 total for this fill)
26.82 mpg (US)
32.2 mpg (Imp)
8.77 L/100 km
3.73 gal (US)/100 mi
1256.58 Wh/mi
More city than fwy, airport trips (2), visiting a friend
2013-07-25 278.9 mi
448.85 km
9.108 gal (US)
7.58 gal (Imp)
34.48 L
306.94 kWh
$3.999
($36.42 total for this fill)
30.62 mpg (US)
36.79 mpg (Imp)
7.68 L/100 km
3.27 gal (US)/100 mi
1100.54 Wh/mi
2013-07-16 296.1 mi
476.53 km
10.191 gal (US)
8.49 gal (Imp)
38.58 L
343.44 kWh
$4.059
($41.37 total for this fill)
29.06 mpg (US)
34.88 mpg (Imp)
8.1 L/100 km
3.44 gal (US)/100 mi
1159.88 Wh/mi
2013-06-27 272.4 mi
438.39 km
8.94 gal (US)
7.44 gal (Imp)
33.84 L
301.28 kWh
$4.079
($36.47 total for this fill)
30.47 mpg (US)
36.61 mpg (Imp)
7.72 L/100 km
3.28 gal (US)/100 mi
1106.02 Wh/mi
Freeway driving at 60-62, pulse and glide in town.
2013-06-13 283.1 mi
455.61 km
9.58 gal (US)
7.98 gal (Imp)
36.26 L
322.85 kWh
$3.999
($38.31 total for this fill)
29.55 mpg (US)
35.48 mpg (Imp)
7.96 L/100 km
3.38 gal (US)/100 mi
1140.41 Wh/mi
More P&G with low fwy speed.
2013-05-28 323.4 mi
520.46 km
11.205 gal (US)
9.33 gal (Imp)
42.42 L
377.61 kWh
$3.999
($44.81 total for this fill)
28.86 mpg (US)
34.66 mpg (Imp)
8.15 L/100 km
3.46 gal (US)/100 mi
1167.63 Wh/mi
more pulse and glide, switched halfway to less aggressive acceleration - 2100/2500/2x+ glide
2013-05-03 309.5 mi
498.09 km
10.31 gal (US)
8.59 gal (Imp)
39.03 L
347.45 kWh
$3.879
($39.99 total for this fill)
30.02 mpg (US)
36.03 mpg (Imp)
7.84 L/100 km
3.33 gal (US)/100 mi
1122.62 Wh/mi
Pulse and glide for the win!!!!
2013-04-16 256.1 mi
412.15 km
9.942 gal (US)
8.28 gal (Imp)
37.63 L
335.05 kWh
$3.979
($39.56 total for this fill)
25.76 mpg (US)
30.93 mpg (Imp)
9.13 L/100 km
3.88 gal (US)/100 mi
1308.28 Wh/mi
Bad tank for some reason - I think EOC is actually hurting my mileage, the car seems a little chuggy when I start it back up (clutch pop)...
2013-03-31 294.1 mi
473.31 km
10.578 gal (US)
8.81 gal (Imp)
40.04 L
356.48 kWh
$4.119
($43.57 total for this fill)
27.8 mpg (US)
33.38 mpg (Imp)
8.46 L/100 km
3.6 gal (US)/100 mi
1212.1 Wh/mi
2013-03-14 292.4 mi
470.57 km
10.691 gal (US)
8.9 gal (Imp)
40.47 L
360.29 kWh
$4.199
($44.89 total for this fill)
27.35 mpg (US)
32.85 mpg (Imp)
8.6 L/100 km
3.66 gal (US)/100 mi
1232.18 Wh/mi
2013-02-26 279.3 mi
449.49 km
10.381 gal (US)
8.64 gal (Imp)
39.3 L
349.84 kWh
$4.299
($44.63 total for this fill)
26.9 mpg (US)
32.33 mpg (Imp)
8.74 L/100 km
3.72 gal (US)/100 mi
1252.56 Wh/mi
Tried increasing highway speed to 65-75mph to see how much this impacts overall mileage. Not much!
2013-02-10 295.2 mi
475.08 km
8.44 gal (US)
7.03 gal (Imp)
31.95 L
284.43 kWh
$4.159
($35.1 total for this fill)
34.98 mpg (US)
41.99 mpg (Imp)
6.73 L/100 km
2.86 gal (US)/100 mi
963.52 Wh/mi
To SD and back, all freeway, mostly 70-75, a couple small traffic instances.
2013-02-09 293.9 mi
472.99 km
9.049 gal (US)
7.53 gal (Imp)
34.25 L
304.95 kWh
$4.139
($37.45 total for this fill)
32.48 mpg (US)
39.03 mpg (Imp)
7.24 L/100 km
3.08 gal (US)/100 mi
1037.6 Wh/mi
Drive to and from SD, with an extra 40 miles of city driving. Speed around 65
2013-02-04 297.6 mi
478.94 km
10.761 gal (US)
8.96 gal (Imp)
40.73 L
362.65 kWh
$4.059
($43.68 total for this fill)
27.66 mpg (US)
33.21 mpg (Imp)
8.5 L/100 km
3.62 gal (US)/100 mi
1218.58 Wh/mi
2013-01-17 294.15 mi
473.39 km
10.795 gal (US)
8.99 gal (Imp)
40.86 L
363.79 kWh
$3.719
($40.15 total for this fill)
27.25 mpg (US)
32.72 mpg (Imp)
8.63 L/100 km
3.67 gal (US)/100 mi
1236.75 Wh/mi
The usual drive, 65% city, 35% highway
2012-12-13 311.8 mi
501.79 km
11.47 gal (US)
9.55 gal (Imp)
43.42 L
386.54 kWh
$3.579
($41.05 total for this fill)
27.18 mpg (US)
32.65 mpg (Imp)
8.65 L/100 km
3.68 gal (US)/100 mi
1239.7 Wh/mi
2012-11-15 272.64 mi
438.77 km
9.403 gal (US)
7.83 gal (Imp)
35.59 L
316.88 kWh
$3.799
($35.72 total for this fill)
29 mpg (US)
34.82 mpg (Imp)
8.11 L/100 km
3.45 gal (US)/100 mi
1162.27 Wh/mi
Normal driving mix
2012-11-04 290.35 mi
467.27 km
10.031 gal (US)
8.35 gal (Imp)
37.97 L
338.04 kWh
$4.059
($40.72 total for this fill)
28.95 mpg (US)
34.77 mpg (Imp)
8.13 L/100 km
3.45 gal (US)/100 mi
1164.25 Wh/mi
Same 50/50 mix as usual...
Used a GPS to test my speedo, found out it's actually almost dead on, so I've been factoring in a 3% difference for nothing.
2012-10-09 323.4 mi
520.46 km
10.42 gal (US)
8.68 gal (Imp)
39.44 L
351.15 kWh
$4.69
($48.87 total for this fill)
31.04 mpg (US)
37.26 mpg (Imp)
7.58 L/100 km
3.22 gal (US)/100 mi
1085.81 Wh/mi
Found out I've been downward adjusting my mileage by ~3% without cause! Verified speedo calibration against a gps speedo app, and found it to be dead on. Also verified distance traveled, delta over 25 miles was ~1/10 of a mile, negligible.

The normal 50/50 mix of driving.
2012-09-18 309.9 mi
498.74 km
10.51 gal (US)
8.75 gal (Imp)
39.78 L
354.19 kWh
$4.119
($43.29 total for this fill)
29.49 mpg (US)
35.42 mpg (Imp)
7.98 L/100 km
3.39 gal (US)/100 mi
1142.92 Wh/mi
2012-08-29 304.4 mi
489.88 km
10.94 gal (US)
9.11 gal (Imp)
41.41 L
368.68 kWh
$4.219
($46.16 total for this fill)
27.82 mpg (US)
33.41 mpg (Imp)
8.45 L/100 km
3.59 gal (US)/100 mi
1211.17 Wh/mi
2012-08-12 313.31 mi
504.22 km
10.21 gal (US)
8.5 gal (Imp)
38.65 L
344.08 kWh
$4.159
($42.46 total for this fill)
30.69 mpg (US)
36.86 mpg (Imp)
7.67 L/100 km
3.26 gal (US)/100 mi
1098.21 Wh/mi
Standard mix of driving
2012-07-23 351.2 mi
565.2 km
10.413 gal (US)
8.67 gal (Imp)
39.42 L
350.92 kWh
$3.899
($40.6 total for this fill)
33.73 mpg (US)
40.51 mpg (Imp)
6.97 L/100 km
2.96 gal (US)/100 mi
999.2 Wh/mi
Drove to San Diego for the weekend. Drover around town, then back up to L.A. - Ended up going closer to 60-65 on the way back; faster than normal, but the time mattered to me.
2012-07-18 324.28 mi
521.88 km
10.7 gal (US)
8.91 gal (Imp)
40.5 L
360.59 kWh
$3.79
($40.55 total for this fill)
30.31 mpg (US)
36.4 mpg (Imp)
7.76 L/100 km
3.3 gal (US)/100 mi
1111.97 Wh/mi
55/45 city / hwy
2012-06-22 129.45 mi
208.33 km
3.28 gal (US)
2.73 gal (Imp)
12.42 L
110.54 kWh
$3.939
($12.92 total for this fill)
39.47 mpg (US)
47.42 mpg (Imp)
5.96 L/100 km
2.53 gal (US)/100 mi
853.92 Wh/mi
Drove back from SD, daytime, kept it to under 60, passenger mirror folded in, some pulse and glide, followed a truck for ~40 miles nice and slow (around 55)
2012-06-22 112.81 mi
181.55 km
3.35 gal (US)
2.79 gal (Imp)
12.68 L
112.9 kWh
$3.859
($12.93 total for this fill)
33.67 mpg (US)
40.43 mpg (Imp)
6.98 L/100 km
2.97 gal (US)/100 mi
1000.8 Wh/mi
Drove to SD at night, lights up, mirrors folded in.
Stayed between 55 and 65, closer to 62 almost all the way.
2012-06-21 92.15 mi
148.3 km
2.99 gal (US)
2.49 gal (Imp)
11.32 L
100.76 kWh
$3.859
($11.54 total for this fill)
30.82 mpg (US)
37.01 mpg (Imp)
7.63 L/100 km
3.24 gal (US)/100 mi
1093.43 Wh/mi
The usual mix, 50/50
2012-06-15 343.15 mi
552.25 km
11.45 gal (US)
9.53 gal (Imp)
43.34 L
385.87 kWh
$4.099
($46.93 total for this fill)
29.97 mpg (US)
36.01 mpg (Imp)
7.85 L/100 km
3.34 gal (US)/100 mi
1124.49 Wh/mi
Another 60/40 City/Hwy run. Stuck in stop and go traffic for a solid hour and a half total. Pretty frustrated by this, as I'm convinced I was on target to break 31 overall. SOON...
2012-05-25 297.4 mi
478.62 km
10.287 gal (US)
8.57 gal (Imp)
38.94 L
346.67 kWh
$4.39
($45.16 total for this fill)
28.91 mpg (US)
34.7 mpg (Imp)
8.14 L/100 km
3.46 gal (US)/100 mi
1165.67 Wh/mi
About 50/50 Hwy and City. 10% of the hwy had A/C on, at least 20% of hwy had traffic (A/C 10% overlapped with and traffic)
2012-05-13 211.7 mi
340.7 km
8.5 gal (US)
7.08 gal (Imp)
32.18 L
286.45 kWh
$4.45
($37.83 total for this fill)
24.91 mpg (US)
29.9 mpg (Imp)
9.45 L/100 km
4.02 gal (US)/100 mi
1353.09 Wh/mi
half city half highway, daytime, windows cracked, around 70-75mph on highway. Still experiencing rough idle, vac leak or electrical gremlin.

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


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