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Fuel log graph
Efficiency log for: Red - 2004 Toyota Matrix XR
  • Lifetime Fuel Economy: 32.3 mpg (US), 7.3 L/100 km, 38.8 mpg (Imp)
  • 90-day Fuel Economy: 27.3 mpg (US), 8.6 L/100 km, 32.8 mpg (Imp)
  • 3-tank Fuel Economy: 27.5 mpg (US), 8.6 L/100 km, 33 mpg (Imp)
  • EPA Combined Rating / % over rating: 27 mpg (US) / 1.3% (based on 90-day fuel economy)
  • Total fills: 45
  • Average cost per gal/L: $2.36 per gal (US); $0.00 per L (price data entered for 45 fill/s)
  • Average cost per fill: $13.42
  • Average distance cost: $0.07 per mi. / $0.05 per km
  • Total fuel used: 255.54 gal (US), 967.3 L
  • Total distance traveled: 8261.4 mi. / 13295.5 km
  • Total cost: $603.96
  • Total fuel saved vs. EPA: 50.4 gal. (US) / 190.8 L
  • Total saved: $118.94 (based on avg. cost per gal./L)
  • Average tank distance: 183.6 mi. / 295.5 km
Fill date Distance Fill amount Price Fuel Economy Details
2017-02-10 265.6 mi
427.44 km
10.562 gal (US)
8.79 gal (Imp)
39.98 L
355.94 kWh
$2.499
($26.39 total for this fill)
25.15 mpg (US)
30.22 mpg (Imp)
9.35 L/100 km
3.98 gal (US)/100 mi
1340.14 Wh/mi
Short hop town drives, mostly. Winter.
2017-01-02 305.3 mi
491.33 km
10.388 gal (US)
8.65 gal (Imp)
39.32 L
350.08 kWh
$2.499
($25.96 total for this fill)
29.39 mpg (US)
35.29 mpg (Imp)
8 L/100 km
3.4 gal (US)/100 mi
1146.68 Wh/mi
Short-hop city errands for the most part. Winter.
2016-12-11 252.3 mi
406.04 km
8.973 gal (US)
7.47 gal (Imp)
33.97 L
302.39 kWh
$2.399
($21.53 total for this fill)
28.12 mpg (US)
33.78 mpg (Imp)
8.37 L/100 km
3.56 gal (US)/100 mi
1198.53 Wh/mi
Short trips. City driving. Winter.
2016-11-19 245.3 mi
394.77 km
9.166 gal (US)
7.63 gal (Imp)
34.7 L
308.89 kWh
$2.419
($22.17 total for this fill)
26.76 mpg (US)
32.15 mpg (Imp)
8.79 L/100 km
3.74 gal (US)/100 mi
1259.23 Wh/mi
City driving. Short trips, mostly.
2016-10-25 275.3 mi
443.05 km
8.612 gal (US)
7.17 gal (Imp)
32.6 L
290.22 kWh
$2.559
($22.04 total for this fill)
31.97 mpg (US)
38.4 mpg (Imp)
7.36 L/100 km
3.13 gal (US)/100 mi
1054.2 Wh/mi
A lot of city errand driving--and a trip to the dealership for some recall work.
2016-10-10 136.1 mi
219.03 km
3.535 gal (US)
2.94 gal (Imp)
13.38 L
119.13 kWh
$2.559
($9.05 total for this fill)
38.5 mpg (US)
46.29 mpg (Imp)
6.11 L/100 km
2.6 gal (US)/100 mi
875.31 Wh/mi
I filled it to the very brim.
2016-10-03 118.9 mi
191.35 km
4.97 gal (US)
4.14 gal (Imp)
18.81 L
167.49 kWh
$2.559
($12.72 total for this fill)
23.92 mpg (US)
28.72 mpg (Imp)
9.83 L/100 km
4.18 gal (US)/100 mi
1408.66 Wh/mi
There is no accounting for this figure.
2016-09-29 237.5 mi
382.22 km
6.242 gal (US)
5.2 gal (Imp)
23.63 L
210.36 kWh
$2.559
($15.97 total for this fill)
38.05 mpg (US)
45.67 mpg (Imp)
6.18 L/100 km
2.63 gal (US)/100 mi
885.73 Wh/mi
1/2 Highway road trip. 1/2 commuting and town driving. Not bad driving performance. Easy weather; traffic was moderate.
2016-09-18 273.5 mi
440.16 km
7.738 gal (US)
6.44 gal (Imp)
29.29 L
260.77 kWh
$2.499
($19.34 total for this fill)
35.35 mpg (US)
42.47 mpg (Imp)
6.65 L/100 km
2.83 gal (US)/100 mi
953.46 Wh/mi
2 commutes and a sea-level country road-trip.
2016-09-12 89.4 mi
143.88 km
2.597 gal (US)
2.16 gal (Imp)
9.83 L
87.52 kWh
$2.519
($6.54 total for this fill)
34.42 mpg (US)
41.39 mpg (Imp)
6.83 L/100 km
2.9 gal (US)/100 mi
978.97 Wh/mi
Pretty good driving. Evening and pre-dawn commutes.
2016-09-03 114.5 mi
184.27 km
3.708 gal (US)
3.09 gal (Imp)
14.04 L
124.96 kWh
$2.459
($9.12 total for this fill)
30.88 mpg (US)
37.06 mpg (Imp)
7.62 L/100 km
3.24 gal (US)/100 mi
1091.35 Wh/mi
The night commutes are helping. My driving was decent. I can only account for the low mileage on this last tank by variations in how full the top-off was between this and the last fill-up.
2016-08-27 152.8 mi
245.91 km
4.193 gal (US)
3.49 gal (Imp)
15.87 L
141.3 kWh
$2.419
($10.14 total for this fill)
36.44 mpg (US)
43.78 mpg (Imp)
6.45 L/100 km
2.74 gal (US)/100 mi
924.74 Wh/mi
Evening and night commutes on the state highway mostly--with cruising speeds around 45 mph. I did passably well, with room for improvement.
2016-08-20 157.1 mi
252.83 km
4.487 gal (US)
3.74 gal (Imp)
16.99 L
151.21 kWh
$2.299
($10.32 total for this fill)
35.01 mpg (US)
42.01 mpg (Imp)
6.72 L/100 km
2.86 gal (US)/100 mi
962.51 Wh/mi
About 1/2 were off-hours commutes. My performance was conscientious enough; passably fine . . . and not my peak, for sure!
2016-08-13 146.4 mi
235.61 km
4.352 gal (US)
3.62 gal (Imp)
16.47 L
146.66 kWh
$2.399
($10.44 total for this fill)
33.64 mpg (US)
40.44 mpg (Imp)
6.99 L/100 km
2.97 gal (US)/100 mi
1001.78 Wh/mi
Some heinous rush hours and get-home-itis highway cruises. Mia culpa.
2016-08-06 144 mi
231.75 km
4.47 gal (US)
3.72 gal (Imp)
16.92 L
150.64 kWh
$2.399
($10.72 total for this fill)
32.21 mpg (US)
38.71 mpg (Imp)
7.3 L/100 km
3.1 gal (US)/100 mi
1046.11 Wh/mi
40% of the driving was rush-hour commuting. One does the best he can.
2016-07-30 142.6 mi
229.49 km
4.39 gal (US)
3.66 gal (Imp)
16.62 L
147.94 kWh
$2.419
($10.62 total for this fill)
32.48 mpg (US)
38.96 mpg (Imp)
7.24 L/100 km
3.08 gal (US)/100 mi
1037.45 Wh/mi
Heavily trafficked commuting. Slow. Stop and go. Long time. Heat of the day. Windows down.
2016-07-23 148.3 mi
238.67 km
4.959 gal (US)
4.13 gal (Imp)
18.77 L
167.12 kWh
$2.459
($12.19 total for this fill)
29.91 mpg (US)
35.91 mpg (Imp)
7.86 L/100 km
3.34 gal (US)/100 mi
1126.9 Wh/mi
I could make excuses . . . but I WAS the one driving!
2016-07-16 270.9 mi
435.97 km
7.736 gal (US)
6.44 gal (Imp)
29.28 L
260.7 kWh
$2.459
($19.02 total for this fill)
35.02 mpg (US)
42.07 mpg (Imp)
6.72 L/100 km
2.86 gal (US)/100 mi
962.35 Wh/mi
I commute now at busier times of the day. City traffic. Fueled to 3rd auto click-off, per usual. No likey traffic.
2016-07-04 121.6 mi
195.7 km
3.491 gal (US)
2.91 gal (Imp)
13.21 L
117.65 kWh
$2.359
($8.24 total for this fill)
34.83 mpg (US)
41.79 mpg (Imp)
6.75 L/100 km
2.87 gal (US)/100 mi
967.52 Wh/mi
My work schedule has changed, and I am commuting during times of increased traffic.
2016-06-26 147.3 mi
237.06 km
3.953 gal (US)
3.29 gal (Imp)
14.96 L
133.22 kWh
$2.399
($9.48 total for this fill)
37.26 mpg (US)
44.77 mpg (Imp)
6.31 L/100 km
2.68 gal (US)/100 mi
904.41 Wh/mi
Pretty good driving. Fueled on low flow to the 3rd auto-click off, per usual.
2016-06-18 175 mi
281.64 km
4.741 gal (US)
3.95 gal (Imp)
17.95 L
159.77 kWh
$2.459
($11.66 total for this fill)
36.91 mpg (US)
44.3 mpg (Imp)
6.37 L/100 km
2.71 gal (US)/100 mi
912.97 Wh/mi
One bad commute and a terrible trip to the airport! Filled till the 3rd auto click-off.
2016-06-11 133.6 mi
215.01 km
3.552 gal (US)
2.96 gal (Imp)
13.45 L
119.7 kWh
$2.499
($8.88 total for this fill)
37.61 mpg (US)
45.14 mpg (Imp)
6.26 L/100 km
2.66 gal (US)/100 mi
895.96 Wh/mi
Fueled on auto-flow till the 3rd click off. Commutes were normal though more interstate than previously. I felt like this was a good solid (and replicable) performance.
2016-06-04 142.1 mi
228.69 km
3.74 gal (US)
3.11 gal (Imp)
14.16 L
126.04 kWh
$2.459
($9.2 total for this fill)
37.99 mpg (US)
45.69 mpg (Imp)
6.19 L/100 km
2.63 gal (US)/100 mi
886.98 Wh/mi
Drove with attention to a 45mph (or 25mph on surface streets) cruising speed. My commutes were made mostly on the interstate. This necessitated a dreadful hill climb on several days. I drove with decent attention. Fueled up to the 3rd click on auto-fill.
2016-05-27 164 mi
263.93 km
3.813 gal (US)
3.17 gal (Imp)
14.43 L
128.5 kWh
$2.459
($9.38 total for this fill)
43.01 mpg (US)
51.74 mpg (Imp)
5.47 L/100 km
2.33 gal (US)/100 mi
783.54 Wh/mi
I can no better account for the high mileage of this past week than I can the low mileage of the last. I filled both tanks to the brim, as best I could. I drove very similarly both last week and this week just concluded. Mystery.
2016-05-19 109.3 mi
175.9 km
4.008 gal (US)
3.34 gal (Imp)
15.17 L
135.07 kWh
$2.459
($9.86 total for this fill)
27.27 mpg (US)
32.72 mpg (Imp)
8.62 L/100 km
3.67 gal (US)/100 mi
1235.77 Wh/mi
By the looks of the numbers, this will be bad. And it is a mystery. I drove with my usual attention to maximize economy. Upon refueling, I did not utilize the 'automatic click-off' at the pump, but rather held the dispensing lever manually until it clicked off while at a very low fueling rate. Could it be that manual dispensing allows for significantly more fuel to be added than does automatic fueling with the dispensing mechanism set on low flow? If so, the truth will come in time as these variations come to average. At any rate, in my driving technique, I maximized my time at 27 or so MPH after the gear change and then at 45MPH. Additionally, I am trying to achieve gear increase at the lowest possible RPM prior to increasing throttle pressure to the next gear change. Time will tell if my strategy is well-headed.
2016-05-13 160.9 mi
258.94 km
4.254 gal (US)
3.54 gal (Imp)
16.1 L
143.36 kWh
$2.399
($10.21 total for this fill)
37.82 mpg (US)
45.45 mpg (Imp)
6.22 L/100 km
2.64 gal (US)/100 mi
890.99 Wh/mi
Pretty good driving. Focused in the last few days on maximizing time driving at 25mph and 45mph due to empirical data report from other user defining those as the most efficient speeds (in level cruise). We'll see! Fueled till the 5th automatic click off.
2016-05-06 149.9 mi
241.24 km
4.006 gal (US)
3.33 gal (Imp)
15.16 L
135 kWh
$2.299
($9.21 total for this fill)
37.42 mpg (US)
45.02 mpg (Imp)
6.28 L/100 km
2.67 gal (US)/100 mi
900.6 Wh/mi
I filled it to the tippy-top. More interstate driving than usual due to state highway closure on my commute route. And one dreadful city drive errand. Drove pretty well.
2016-04-29 120.8 mi
194.41 km
3.365 gal (US)
2.8 gal (Imp)
12.74 L
113.4 kWh
$2.139
($7.2 total for this fill)
35.9 mpg (US)
43.14 mpg (Imp)
6.55 L/100 km
2.79 gal (US)/100 mi
938.74 Wh/mi
Normal commutes--pretty good technique--and one dreadful errand. Fueled up to the 4th auto click-off because it seemed the right thing to do.
2016-04-23 193.8 mi
311.89 km
6.192 gal (US)
5.16 gal (Imp)
23.44 L
208.67 kWh
$2.059
($12.75 total for this fill)
31.3 mpg (US)
37.56 mpg (Imp)
7.52 L/100 km
3.2 gal (US)/100 mi
1076.73 Wh/mi
Standard commuting plus two afternoons of errands. The state highway was closed, so several of my trips were on the interstate. I traveled at 45 to 50 mph. I used the cruise control regularly and drove 'average-well. Per usual, now, I fueled via low-flow automatic and concluded at the first click-off.
2016-04-15 223.9 mi
360.33 km
6.702 gal (US)
5.58 gal (Imp)
25.37 L
225.86 kWh
$2.199
($14.74 total for this fill)
33.41 mpg (US)
40.13 mpg (Imp)
7.04 L/100 km
2.99 gal (US)/100 mi
1008.75 Wh/mi
I had a few bad days. I also used cruise control considerably more than I had in previous weeks. The mileage shown is better than actual as I fueled this time on automatic low-flow to the initial click-off. The previous fueling had been a higher top-off, probably, as I had fueled until the second click-off.
2016-03-25 173.4 mi
279.06 km
5.256 gal (US)
4.38 gal (Imp)
19.9 L
177.13 kWh
$2.199
($11.56 total for this fill)
32.99 mpg (US)
39.59 mpg (Imp)
7.13 L/100 km
3.03 gal (US)/100 mi
1021.51 Wh/mi
One daytime interstate commute. Otherwise, normal routine. Aware . . . maybe not hyper-aware. Per usual, filled to second auto-fill click-off.
2016-03-19 164.5 mi
264.74 km
4.478 gal (US)
3.73 gal (Imp)
16.95 L
150.91 kWh
$2.159
($9.67 total for this fill)
36.74 mpg (US)
44.1 mpg (Imp)
6.4 L/100 km
2.72 gal (US)/100 mi
917.39 Wh/mi
While I drove reasonably well, I would credit the high mileage of this tank to the unusually early 'click-off' from the automatic fill at the pump. As usual for recent fills, I went to the second auto-fill click off. Still--it happened early, this time. Included in these miles were one city-errand trip that was driven reasonably intelligently and a commute detour that involved some stop-and-go and hills. As well, I caught myself 5 to 8 above the 40 MPH speed limit on my commute highway SEVERAL times! Aiyyyy! It is what it is.
2016-03-12 132.6 mi
213.4 km
4.041 gal (US)
3.37 gal (Imp)
15.3 L
136.18 kWh
$2.099
($8.48 total for this fill)
32.81 mpg (US)
39.35 mpg (Imp)
7.17 L/100 km
3.05 gal (US)/100 mi
1027 Wh/mi
Per recent standard, I fueled on auto, low-flow and completed fueling after the 2nd automatic click off. I drove this week with awareness, definitely--but not hyper-awareness. I would give myself a 'B'. My 2 mileage odometers had a 1.4 mile discrepancy for an unknown reason. I used the higher mileage figure to ensure conservative integrity in my accounting.
2016-03-05 130.7 mi
210.34 km
3.999 gal (US)
3.33 gal (Imp)
15.14 L
134.77 kWh
$1.999
($7.99 total for this fill)
32.68 mpg (US)
39.25 mpg (Imp)
7.2 L/100 km
3.06 gal (US)/100 mi
1031.14 Wh/mi
Low flow automatic fueled to the 2nd click off. I drove interstate on 2 legs of my weekly commuting rather than the lower speed state highway. I was poorly attentive to my speed control compared to the last couple of months. I could have driven more efficiently.
2016-02-27 134.3 mi
216.13 km
3.942 gal (US)
3.28 gal (Imp)
14.92 L
132.85 kWh
$1.799
($7.09 total for this fill)
34.07 mpg (US)
40.95 mpg (Imp)
6.9 L/100 km
2.94 gal (US)/100 mi
989.2 Wh/mi
I again completed fueling with the second click on the lowest auto-flow setting. My driving was night commutes, mostly. I felt I performed decently.
2016-02-20 104.1 mi
167.53 km
3.388 gal (US)
2.82 gal (Imp)
12.82 L
114.18 kWh
$1.799
($6.1 total for this fill)
30.73 mpg (US)
36.91 mpg (Imp)
7.65 L/100 km
3.25 gal (US)/100 mi
1096.83 Wh/mi
I completed the fueling at the 2nd click-off from low flow--so this particular mileage is slightly higher than actual. Otherwise, it was a normal commute week.
2016-02-12 146 mi
234.96 km
4.179 gal (US)
3.48 gal (Imp)
15.82 L
140.83 kWh
$1.859
($7.77 total for this fill)
34.94 mpg (US)
41.95 mpg (Imp)
6.73 L/100 km
2.86 gal (US)/100 mi
964.59 Wh/mi
I had a couple of daytime commutes and made a less than stellar performance of it. I filled on low-flow with 2 clicks past the initial 'off'.
2016-02-06 109 mi
175.42 km
2.618 gal (US)
2.18 gal (Imp)
9.91 L
88.23 kWh
$1.899
($4.97 total for this fill)
41.63 mpg (US)
50 mpg (Imp)
5.65 L/100 km
2.4 gal (US)/100 mi
809.45 Wh/mi
Drove well. Changed my fueling procedure from topping off completely to topping off after the 3rd automatic click-off from the low flow setting on the dispenser. Consequently, the mileage is inaccurately high for this fill-up. The mileage average of all my fuel log entries should be accurate, however--and it shows I'm continuing to exceed EPA expectations, considerably. I'm happy with my performance.
2016-01-30 132.3 mi
212.92 km
4.399 gal (US)
3.66 gal (Imp)
16.65 L
148.25 kWh
$1.999
($8.79 total for this fill)
30.08 mpg (US)
36.15 mpg (Imp)
7.82 L/100 km
3.33 gal (US)/100 mi
1120.56 Wh/mi
Tried hard. Driving real gently. Coasting neutral (engine on) when possible, especially in curves. Otherwise, maintaining, as much as I'm able, about 40mph--highest gear, lowest RPM.
2016-01-23 139.2 mi
224.02 km
4.502 gal (US)
3.75 gal (Imp)
17.04 L
151.72 kWh
$2.099
($9.45 total for this fill)
30.92 mpg (US)
37.12 mpg (Imp)
7.61 L/100 km
3.23 gal (US)/100 mi
1089.94 Wh/mi
I changed to commuting via the state highway--with a lower speed limit--instead of the interstate. I also made this fueling 1 week after my last fueling as I'm trying to maintain 3/4 of a tank or more at all times . . . because earthquakes! This tank included 2 daytime commutes (nightmare!) and 5 off-hour commutes. UGH! Disappointment in the mileage. I was sure, on this fill-up, to fill as full as possible . . . so that may be a small factor. Damn. Here's to next week.
2016-01-16 322.9 mi
519.66 km
10.03 gal (US)
8.35 gal (Imp)
37.97 L
338.01 kWh
$2.199
($22.06 total for this fill)
32.19 mpg (US)
38.67 mpg (Imp)
7.31 L/100 km
3.11 gal (US)/100 mi
1046.79 Wh/mi
I did better this time. I'm going to limit my highway speed to 60 for this present tank and see how it goes.
2016-01-01 271.2 mi
436.45 km
9.909 gal (US)
8.25 gal (Imp)
37.51 L
333.93 kWh
$2.29
($22.69 total for this fill)
27.37 mpg (US)
32.87 mpg (Imp)
8.59 L/100 km
3.65 gal (US)/100 mi
1231.31 Wh/mi
I blame Christmas.
2015-12-20 325 mi
523.04 km
10.5 gal (US)
8.74 gal (Imp)
39.75 L
353.85 kWh
$2.15
($22.58 total for this fill)
30.95 mpg (US)
37.19 mpg (Imp)
7.6 L/100 km
3.23 gal (US)/100 mi
1088.77 Wh/mi
2015-12-05 321.2 mi
516.92 km
10.399 gal (US)
8.66 gal (Imp)
39.36 L
350.45 kWh
$3.21
($33.38 total for this fill)
30.89 mpg (US)
37.09 mpg (Imp)
7.61 L/100 km
3.24 gal (US)/100 mi
1091.06 Wh/mi
Seattle winter driving conditions predominated with a few 'nice' days.
2015-11-19 337 mi
542.35 km
11 gal (US)
9.16 gal (Imp)
41.64 L
370.7 kWh
$2.39
($26.29 total for this fill)
30.64 mpg (US)
36.79 mpg (Imp)
7.68 L/100 km
3.26 gal (US)/100 mi
1100 Wh/mi
Compared to my personal best of 40.2 MPG, this was a sad result. Two circumstances figured prominently: 1. to get that 40 MPG record, I had used EOC. Thanks to members of this site, I learned that practice could damage my transmission (automatic, not approved for dinghy towing). So, without EOC, the mileage took a hit, for sure. Additionally, it is the start of winter conditions, and I have used the defrost fan--on occasion even idling at start (I so hate that) with the defroster on high to clear windows. Bummer.

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


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