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Fuel log graph
Efficiency log for: EcoCorsica - 1996 Chevrolet Corsica Base
  • Lifetime Fuel Economy: 32 mpg (US), 7.3 L/100 km, 38.4 mpg (Imp)
  • 90-day Fuel Economy: 32 mpg (US), 7.3 L/100 km, 38.4 mpg (Imp)
  • 3-tank Fuel Economy: 32.6 mpg (US), 7.2 L/100 km, 39.1 mpg (Imp)
  • EPA Combined Rating / % over rating: 21 mpg (US) / 52.4% (based on 90-day fuel economy)
  • Total fills: 11
  • Average cost per gal/L: $3.93 per gal (US); $0.00 per L (price data entered for 11 fill/s)
  • Average cost per fill: $39.70
  • Average distance cost: $0.12 per mi. / $0.08 per km
  • Total fuel used: 111.06 gal (US), 420.4 L
  • Total distance traveled: 3555 mi. / 5721.2 km
  • Total cost: $436.70
  • Total fuel saved vs. EPA: 58.2 gal. (US) / 220.3 L
  • Total saved: $228.73 (based on avg. cost per gal./L)
  • Average tank distance: 323.2 mi. / 520.1 km
Fill date Distance Fill amount Price Fuel Economy Details
2011-05-19 406 mi
653.39 km
12.46 gal (US)
10.38 gal (Imp)
47.17 L
419.9 kWh
$4.03
($50.21 total for this fill)
32.58 mpg (US)
39.11 mpg (Imp)
7.22 L/100 km
3.07 gal (US)/100 mi
1034.24 Wh/mi
E26 blend. Some construction and testing brought the overall average down for this tank.
2011-05-16 236 mi
379.81 km
7.619 gal (US)
6.34 gal (Imp)
28.84 L
256.76 kWh
$4.07
($31.01 total for this fill)
30.98 mpg (US)
37.22 mpg (Imp)
7.59 L/100 km
3.23 gal (US)/100 mi
1087.97 Wh/mi
E40 for this tank. Fuel trim running +3 at cruise, up to +10 city. Can run up to 29.9" MAP at 2500 RPM and 27" at 1500 RPM, although 22" is still the sweet spot. MPG still the same or better than regular fuel. SG fuel% was dead-on this time, didn't need to adjust.

Had to refill with midgrade 89 E10 because I cut the return trip a little too close with this tank. This brings the tank E% to 24%. Strangely enough, the return trip reported worse MPGs with a tailwind. Not sure if this is just because SG has been calibrated to the increasing E% in the fuel. But I did notice higher MAP required to maintain cruising speed on E24 than on E40.

More city driving and road construction also hurt MPG on this tank.
2011-05-10 409 mi
658.22 km
12.2 gal (US)
10.16 gal (Imp)
46.18 L
411.14 kWh
$3.87
($47.21 total for this fill)
33.52 mpg (US)
40.26 mpg (Imp)
7.02 L/100 km
2.98 gal (US)/100 mi
1005.23 Wh/mi
90% highway. E30 on this tank, MPG seems to be holding right where it's at. Had to adjust SG fuel% up a few points. Surprisingly, MPG does not seem to be suffering much with the increase in ethanol. E30 starts knocking at about 26" man. press. Fuel trim was +4 to +6.

This fillup was a blend of E40. I was able to run right up to 29" man. press. (100% load) with E40. Still not sure if BSFC is better in that range though. Fuel trim runs around +7 city on E40.
2011-05-04 403 mi
648.57 km
12.13 gal (US)
10.1 gal (Imp)
45.92 L
408.78 kWh
$4.02
($48.76 total for this fill)
33.22 mpg (US)
39.9 mpg (Imp)
7.08 L/100 km
3.01 gal (US)/100 mi
1014.34 Wh/mi
First tank of E20 blend. Fuel % was increased on SG, not sure if this was just due to the pump, or actually a result of the fuel. This fillup was E30 blend.
2011-04-30 229 mi
368.54 km
6.654 gal (US)
5.54 gal (Imp)
25.19 L
224.24 kWh
$3.96
($26.35 total for this fill)
34.42 mpg (US)
41.34 mpg (Imp)
6.84 L/100 km
2.91 gal (US)/100 mi
979.21 Wh/mi
Used a mixture of E85 ($3.25/gal) with regular 87 ($4.19/gal) for a blend of about E20 for this fillup. MPG seems to have improved so far. Might try E30 if the results of next fillup are favorable.
2011-04-24 252 mi
405.55 km
7.8 gal (US)
6.5 gal (Imp)
29.53 L
262.86 kWh
$3.86
($30.11 total for this fill)
32.31 mpg (US)
38.77 mpg (Imp)
7.28 L/100 km
3.1 gal (US)/100 mi
1043.1 Wh/mi
2011-04-20 395 mi
635.69 km
12.2 gal (US)
10.16 gal (Imp)
46.18 L
411.14 kWh
$4
($48.8 total for this fill)
32.38 mpg (US)
38.88 mpg (Imp)
7.26 L/100 km
3.09 gal (US)/100 mi
1040.86 Wh/mi
90% highway (55mph). New long distance route. Upper grille masked off. Cruise control except on hills.
2011-04-15 272 mi
437.74 km
8.9 gal (US)
7.41 gal (Imp)
33.69 L
299.93 kWh
$4
($35.6 total for this fill)
30.56 mpg (US)
36.71 mpg (Imp)
7.7 L/100 km
3.27 gal (US)/100 mi
1102.68 Wh/mi
EGR fixed (for now). Upper grille masked off for some of the tank. Trying new long-distance route. Weather is getting warmer =)
2011-04-10 320 mi
514.99 km
10.4 gal (US)
8.66 gal (Imp)
39.37 L
350.48 kWh
$3.85
($40.04 total for this fill)
30.77 mpg (US)
36.95 mpg (Imp)
7.64 L/100 km
3.25 gal (US)/100 mi
1095.25 Wh/mi
More short-distance driving this tank brought the overall mpg down a bit. Forgot to record the miles before filling up, so I used the last known tank average from SG.
2011-04-01 356 mi
572.93 km
11.15 gal (US)
9.28 gal (Imp)
42.21 L
375.76 kWh
$3.89
($43.37 total for this fill)
31.93 mpg (US)
38.36 mpg (Imp)
7.37 L/100 km
3.13 gal (US)/100 mi
1055.51 Wh/mi
Mostly highway on this tank. Price at the pump is killing me. Some P&G EIC and momentum conserving.
2011-04-01 277 mi
445.79 km
9.55 gal (US)
7.95 gal (Imp)
36.15 L
321.84 kWh
$3.69
($35.24 total for this fill)
29.01 mpg (US)
34.84 mpg (Imp)
8.11 L/100 km
3.45 gal (US)/100 mi
1161.88 Wh/mi
The pump filled almost an entire gallon more than Scangauge thought I used. Hopefully this was just due to using a different pump, I'm not very happy about a 26 mpg average =\

Edit: Fuel qty adjusted to compensate 2011-05-22

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


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