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Fuel log graph
Efficiency log for: F Truck - 1977 Ford F100 2x4, single cab, lwb
  • Lifetime Fuel Economy: 8.3 mpg (US), 28.5 L/100 km, 9.9 mpg (Imp)
  • 90-day Fuel Economy: 8.8 mpg (US), 26.9 L/100 km, 10.5 mpg (Imp)
  • 3-tank Fuel Economy: 8.9 mpg (US), 26.6 L/100 km, 10.6 mpg (Imp)
  • EPA Combined Rating / % over rating: 12 mpg (US) / -27.1% (based on 90-day fuel economy)
  • Total fills: 25
  • Average cost per gal/L: $2.76 per gal (US); $0.73 per L (price data entered for 25 fill/s)
  • Average cost per fill: $48.38
  • Average distance cost: $0.33 per mi. / $0.21 per km
  • Total fuel used: 437.74 gal (US), 1657 L
  • Total distance traveled: 3615.1 mi. / 5818 km
  • Total cost: $1,209.58
  • Total fuel saved vs. EPA: -136.5 gal. (US) / -516.7 L
  • Total saved: $-376.74 (based on avg. cost per gal./L)
  • Average tank distance: 144.6 mi. / 232.7 km
Fill date Distance Fill amount Price Fuel Economy Details
2012-11-20 280 km
173.98 mi
66.61 L
17.6 gal (US)
14.65 gal (Imp)
593.12 kWh
$0.84
($55.95 total for this fill)
23.79 L/100 km
9.89 mpg (US)
11.88 mpg (Imp)
10.12 gal (US)/100 mi
3409.13 Wh/mi
Warmer weather than last tank

Mainly longer suburban and city trips

lots of EOC, and DWL used in the second half of the tank to stretch it out as much as i could
2012-11-10 198 km
123.03 mi
55.49 L
14.66 gal (US)
12.21 gal (Imp)
494.04 kWh
$0.84
($46.61 total for this fill)
28.03 L/100 km
8.39 mpg (US)
10.08 mpg (Imp)
11.92 gal (US)/100 mi
4015.61 Wh/mi
Towing a car trailer through hilly terrain for most of this tank, was also quite stormy and rainy

not much eco driving techniques used due to towing

Much longer trips used than last tank
2012-11-04 236 km
146.64 mi
67.71 L
17.89 gal (US)
14.89 gal (Imp)
602.89 kWh
$0.83
($56.2 total for this fill)
28.69 L/100 km
8.2 mpg (US)
9.85 mpg (Imp)
12.2 gal (US)/100 mi
4111.36 Wh/mi
Similar weather to last tank

Lots of very short suburban trips

Similar driving technique to last tank
2012-10-25 497 km
308.82 mi
122.95 L
32.48 gal (US)
27.05 gal (Imp)
1094.58 kWh
$0.799
($98.24 total for this fill)
24.74 L/100 km
9.51 mpg (US)
11.42 mpg (Imp)
10.52 gal (US)/100 mi
3544.39 Wh/mi
Slightly warmer weather than the last few tanks, but the LPG solenoid died halfway through so i was using gasoline for some of the tank, total fuel usage is an estimated combination of LPG and gasoline.
2012-10-03 303 km
188.28 mi
70.32 L
18.58 gal (US)
15.47 gal (Imp)
626.15 kWh
$0.75
($52.74 total for this fill)
23.21 L/100 km
10.13 mpg (US)
12.17 mpg (Imp)
9.87 gal (US)/100 mi
3325.63 Wh/mi
Final return leg of road trip as well as a bit of normal driving after arriving home

Same weather as previous 3 tanks

DWL used as well as a few downhill EOC's
2012-10-01 274 km
170.26 mi
66.69 L
17.62 gal (US)
14.67 gal (Imp)
593.79 kWh
$0.82
($54.69 total for this fill)
24.34 L/100 km
9.66 mpg (US)
11.61 mpg (Imp)
10.35 gal (US)/100 mi
3487.55 Wh/mi
First return leg of interstate road trip

Same weather as last leg

DWL used again
2012-09-30 286 km
177.71 mi
69.87 L
18.46 gal (US)
15.37 gal (Imp)
622.1 kWh
$0.74
($51.7 total for this fill)
24.43 L/100 km
9.63 mpg (US)
11.56 mpg (Imp)
10.39 gal (US)/100 mi
3500.65 Wh/mi
Second leg of an interstate road trip as well as a bit of pottering around town at the end

warm sunny weather, no tail wind this leg

DWL used, no EOC this leg
2012-09-28 225 km
139.81 mi
49.93 L
13.19 gal (US)
10.98 gal (Imp)
444.5 kWh
$0.83
($41.44 total for this fill)
22.19 L/100 km
10.6 mpg (US)
12.73 mpg (Imp)
9.43 gal (US)/100 mi
3179.31 Wh/mi
First leg of a roadtrip

Warm sunny weather, strong tail wind most of the way

DWL used as well as a couple of long EOCs
2012-09-28 177 km
109.98 mi
43.93 L
11.61 gal (US)
9.66 gal (Imp)
391.26 kWh
$0.78
($34.27 total for this fill)
24.82 L/100 km
9.47 mpg (US)
11.39 mpg (Imp)
10.56 gal (US)/100 mi
3557.56 Wh/mi
First full tank since tune up, running much better on LPG

Similar driving and weather to the last few tanks
2012-09-26 130 km
80.78 mi
39.72 L
10.49 gal (US)
8.74 gal (Imp)
353.51 kWh
$0.74
($29.39 total for this fill)
30.55 L/100 km
7.7 mpg (US)
9.24 mpg (Imp)
12.99 gal (US)/100 mi
4376.21 Wh/mi
Filled up today to reset the readings after getting a tuneup yesterday, so most of this tank was running rough/tuning

same weather and driving patterns as the last tank
2012-09-24 222 km
137.94 mi
72.28 L
19.09 gal (US)
15.9 gal (Imp)
643.33 kWh
$0.78
($56.38 total for this fill)
32.56 L/100 km
7.23 mpg (US)
8.68 mpg (Imp)
13.84 gal (US)/100 mi
4663.84 Wh/mi
Hooked the switch up to swap between LPG and Petrol this tank which somehow caused a missfire and lack of power when running on LPG.

Similar weather to the last couple of tanks

More EOC used this tank due to the engine running terribly
2012-09-22 197 km
122.41 mi
52.23 L
13.8 gal (US)
11.49 gal (Imp)
465.06 kWh
$0.78
($40.74 total for this fill)
26.51 L/100 km
8.87 mpg (US)
10.65 mpg (Imp)
11.27 gal (US)/100 mi
3799.2 Wh/mi
No mechanical changes this tank

Similar weather to the last tank

Practicing using the electric fan as little as possible to get the engine warm quickly and stay there, other than that similar driving technique to the last few tanks
2012-09-17 230 km
142.92 mi
66.3 L
17.51 gal (US)
14.58 gal (Imp)
590.09 kWh
$0.81
($53.7 total for this fill)
28.83 L/100 km
8.16 mpg (US)
9.8 mpg (Imp)
12.25 gal (US)/100 mi
4128.81 Wh/mi
New radiator, thermostat and electric fans in and running properly this tank.

Slightly warmer weather than the last few tanks

Similar driving patterns to the last few tanks, but with less engine off coasting
2012-09-04 221 km
137.32 mi
76.05 L
20.09 gal (US)
16.73 gal (Imp)
677.03 kWh
$0.699
($53.16 total for this fill)
34.41 L/100 km
6.84 mpg (US)
8.21 mpg (Imp)
14.63 gal (US)/100 mi
4930.31 Wh/mi
First tank with new radiator/thermofan setup, never got up to operating temp.

mostly shorter city trips with very little EOC used

warmer weather than last few tanks
2012-08-31 206 km
128 mi
61.14 L
16.15 gal (US)
13.45 gal (Imp)
544.26 kWh
$0.68
($41.58 total for this fill)
29.68 L/100 km
7.93 mpg (US)
9.52 mpg (Imp)
12.62 gal (US)/100 mi
4252.03 Wh/mi
Slightly better weather than last tank

No EOC used, mostly shorter suburban trips with a few long open road trips
2012-08-24 191 km
118.68 mi
60.4 L
15.96 gal (US)
13.29 gal (Imp)
537.85 kWh
$0.73
($44.09 total for this fill)
31.62 L/100 km
7.44 mpg (US)
8.93 mpg (Imp)
13.45 gal (US)/100 mi
4531.93 Wh/mi
First full tank with aerocap on

Mainly higher speed suburban driving (80kmh)

First half of tank quite windy and rainy

Used more EOC this tank (around 50km?)
2012-08-17 237 km
147.26 mi
73.23 L
19.35 gal (US)
16.11 gal (Imp)
652.1 kWh
$0.72
($52.73 total for this fill)
30.9 L/100 km
7.61 mpg (US)
9.14 mpg (Imp)
13.14 gal (US)/100 mi
4428.22 Wh/mi
Aerocap finished half way though this tank

Terrible weather, very windy and rainy

Mostly higher speed suburban driving (80kmh), Engine off coasts used on a couple of long descents (approx 20-30km)
2012-08-13 237 km
147.26 mi
69.25 L
18.29 gal (US)
15.23 gal (Imp)
616.37 kWh
$0.73
($50.55 total for this fill)
29.22 L/100 km
8.05 mpg (US)
9.67 mpg (Imp)
12.42 gal (US)/100 mi
4185.59 Wh/mi
didnt end up putting the aerocap on yet this tank.

had a bit of a hooning mood this tank and did a bit of wide open throttle use, but also tried engine off coasting for maybe ~30km? over this tank.

similar weather to the last few tanks and mostly city driving with a couple of short highway trips.
2012-08-08 147 km
91.34 mi
46.5 L
12.28 gal (US)
10.23 gal (Imp)
413.84 kWh
$0.73
($33.95 total for this fill)
31.63 L/100 km
7.44 mpg (US)
8.93 mpg (Imp)
13.44 gal (US)/100 mi
4530.76 Wh/mi
Filled up slightly early due to getting my aerocap on yesterday, want to get a good reading on gains for the first tank with the aerocap.

pretty similar conditions to the last tank both driving style and weather.

one long city peak hour trip explains the slight decrease in mpg, sitting in traffic sucks and im not confident in fast starts enough to EO every red light
2012-08-03 198 km
123.03 mi
60.01 L
15.85 gal (US)
13.2 gal (Imp)
534.15 kWh
$0.58
($34.81 total for this fill)
30.31 L/100 km
7.76 mpg (US)
9.32 mpg (Imp)
12.88 gal (US)/100 mi
4341.62 Wh/mi
mostly city driving with a couple of longer country drives.

kept vacuum above 10 (when accelerating and going up hills) and as steady as possible while cruising, also kept to around 80-90kmh instead of 100kmh in highway driving.

Colder weather again and rainy.
2012-07-30 235 km
146.02 mi
75.15 L
19.85 gal (US)
16.53 gal (Imp)
668.95 kWh
$0.58
($43.59 total for this fill)
31.98 L/100 km
7.36 mpg (US)
8.83 mpg (Imp)
13.59 gal (US)/100 mi
4581.22 Wh/mi
mostly city driving, a couple of longer trips than the last few tanks

kept vacuum down as much as possible as well as down hill coasts (engine on)

slightly warmer weather and less rain that the last few tanks
2012-07-24 228 km
141.67 mi
72.46 L
19.14 gal (US)
15.94 gal (Imp)
645.02 kWh
$0.589
($42.68 total for this fill)
31.78 L/100 km
7.4 mpg (US)
8.89 mpg (Imp)
13.51 gal (US)/100 mi
4552.98 Wh/mi
mostly city driving

used DWL and DWB instead of pulse and glide this tank

slightly warmer weather and much less rain that the last few tanks
2012-07-14 202 km
125.52 mi
70.12 L
18.52 gal (US)
15.42 gal (Imp)
624.12 kWh
$0.599
($42 total for this fill)
34.71 L/100 km
6.78 mpg (US)
8.14 mpg (Imp)
14.75 gal (US)/100 mi
4972.28 Wh/mi
Engine running well this tank, cold and rainy

mostly city driving, with the occasional highway trip

downhill glides used as much as possible and pulse and glide with the engine on
2012-06-25 249 km
154.72 mi
77.28 L
20.42 gal (US)
17 gal (Imp)
688.15 kWh
$0.655
($50.62 total for this fill)
31.04 L/100 km
7.58 mpg (US)
9.1 mpg (Imp)
13.2 gal (US)/100 mi
4447.71 Wh/mi
Engine miss firing most of this tank, cold and rainy

mostly city driving, with the occasional highway trip

downhill glides used as much as possible and pulse and glide on highway with the engine on
2012-06-15 212 km
131.73 mi
71.41 L
18.86 gal (US)
15.71 gal (Imp)
635.58 kWh
$0.669
($47.77 total for this fill)
33.68 L/100 km
6.98 mpg (US)
8.39 mpg (Imp)
14.32 gal (US)/100 mi
4824.87 Wh/mi
Baseline first tank since vehicle purchase

most of this tank was idling at a standstill or high load/high RPM whilst servicing and tuning the engine

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


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