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Fuel log graph
Efficiency log for: Golfwagen - 1989 Volkswagen Golf mk2
  • Lifetime Fuel Economy: 109.7 mpg (US), 2.1 L/100 km, 131.7 mpg (Imp)
  • 90-day Fuel Economy: 107.1 mpg (US), 2.2 L/100 km, 128.7 mpg (Imp)
  • 3-tank Fuel Economy: 86.5 mpg (US), 2.7 L/100 km, 103.9 mpg (Imp)
  • EPA Combined Rating / % over rating: 29 mpg (US) / 269.4% (based on 90-day fuel economy)
  • Total fills: 17
  • Total fuel used: 3.87 gal (US), 14.6 L
  • Total distance traveled: 424 mi. / 682.4 km
  • Average tank distance: 24.9 mi. / 40.1 km
Fill date Distance Fill amount Price Fuel Economy Details
2011-11-10 18.33 mi
29.5 km
0.21753 gal (US)
0.18 gal (Imp)
0.82 L
7.33 kWh
84.26 mpg (US)
101.83 mpg (Imp)
2.78 L/100 km
1.19 gal (US)/100 mi
399.89 Wh/mi
Been getting very similar results. Solid state relays for heaters failed because of bad Pb battery (voltage getting too low when DC/DC is not on) and I wired heater "always on". Max range is about 25 miles with this setup. Of course it depends how fast you drive but I drive mostly in the city (less than 30mph).
2011-10-11 21.81 mi
35.1 km
0.22647 gal (US)
0.19 gal (Imp)
0.86 L
7.63 kWh
96.3 mpg (US)
114.79 mpg (Imp)
2.45 L/100 km
1.04 gal (US)/100 mi
349.84 Wh/mi
Use of heater eats mpg reading but I don't care about that much. It is still clean driving and heat comes fast.
2011-10-09 6.275 mi
10.1 km
0.09237 gal (US)
0.08 gal (Imp)
0.35 L
3.11 kWh
67.93 mpg (US)
78.44 mpg (Imp)
3.47 L/100 km
1.47 gal (US)/100 mi
495.62 Wh/mi
Some regular driving after installing 20 new Winston 90Ah cells to the front. I'm using my 6kW heater setup a lot. Input to heater elements is probably about 4kW because of low voltage. Sidenote: 12V battery is dying. I can't even get a full charge anymore as 12V supply fades off and miniBMS gives up the relay control. Relay opens and charger shuts off. Immediate actions needed as weather is getting colder and poor Pb-battery doesn't hold charge even during warm days.
2011-10-04 34.73 mi
55.89 km
0.292 gal (US)
0.24 gal (Imp)
1.11 L
9.84 kWh
118.94 mpg (US)
144.71 mpg (Imp)
1.99 L/100 km
0.84 gal (US)/100 mi
283.33 Wh/mi
Drove pack pretty empty but still could have gone few more kilometers.
2011-10-01 36.41 mi
58.6 km
0.4648 gal (US)
0.39 gal (Imp)
1.76 L
15.66 kWh
78.33 mpg (US)
93.36 mpg (Imp)
3 L/100 km
1.28 gal (US)/100 mi
430.1 Wh/mi
Had to do some random driving before charger had finished off. Didn't reset odometer or wattmeter during these short drives.
2011-09-23 15.53 mi
24.99 km
0.16389 gal (US)
0.14 gal (Imp)
0.62 L
5.52 kWh
94.76 mpg (US)
110.93 mpg (Imp)
2.48 L/100 km
1.06 gal (US)/100 mi
355.44 Wh/mi
25km driven, 5.5kWh back into batteries. Cold weather forces me to use heater almost every time I drive. MPG is dropping because of this.
2011-09-22 17.4 mi
28 km
0.19369 gal (US)
0.16 gal (Imp)
0.73 L
6.53 kWh
89.83 mpg (US)
108.75 mpg (Imp)
2.61 L/100 km
1.11 gal (US)/100 mi
375.29 Wh/mi
Again car stood still few days with only miniBMS connected. Drove 28km, maybe used heater a bit. 6.5kWh back into pack.
2011-09-14 23.8 mi
38.3 km
0.2085 gal (US)
0.17 gal (Imp)
0.79 L
7.03 kWh
114.15 mpg (US)
140 mpg (Imp)
2.06 L/100 km
0.88 gal (US)/100 mi
295.38 Wh/mi
Using heater drains some available range. I have 4x 1500W ceramic elements in pairs of two. I only use one pair at a time as it is not that cold here yet.
2011-09-12 22.72 mi
36.56 km
0.274 gal (US)
0.23 gal (Imp)
1.04 L
9.23 kWh
82.92 mpg (US)
98.78 mpg (Imp)
2.84 L/100 km
1.21 gal (US)/100 mi
406.25 Wh/mi
9.2kWh back to the pack. Car stood two weeks as new coupler was being machined and clutch plate getting replaced. I think I mistakenly reset odometer when taking dash apart while motor was off, so total distance may lack miles. Would explain resulting MPG.
2011-08-23 33.31 mi
53.61 km
0.283 gal (US)
0.24 gal (Imp)
1.07 L
9.54 kWh
117.7 mpg (US)
138.79 mpg (Imp)
2 L/100 km
0.85 gal (US)/100 mi
286.4 Wh/mi
Stupid me went and drove kilometer or two when recharge wasn't fully completed. So this time kWh might be off a bit. I suppose full charge took total 9,5kWh from the wall. At least I know how far I went.
2011-08-21 39.05 mi
62.84 km
0.286 gal (US)
0.24 gal (Imp)
1.08 L
9.64 kWh
136.54 mpg (US)
162.71 mpg (Imp)
1.72 L/100 km
0.73 gal (US)/100 mi
246.86 Wh/mi
80-90km/h most of the time. One cell went below 2.85V at 55km and was driven a bit too low before getting back home. This cell seems to be weakest of the pack as others were not even close to this limit. 9.6kWh used for recharging.
2011-08-18 30.85 mi
49.65 km
0.206 gal (US)
0.17 gal (Imp)
0.78 L
6.94 kWh
149.76 mpg (US)
181.47 mpg (Imp)
1.57 L/100 km
0.67 gal (US)/100 mi
224.96 Wh/mi
Mostly Stop'n'go city traffic, 49,65km driven. 6,9kWh back into batteries.
2011-08-16 21.1 mi
33.96 km
0.17 gal (US)
0.14 gal (Imp)
0.64 L
5.73 kWh
124.12 mpg (US)
150.71 mpg (Imp)
1.88 L/100 km
0.81 gal (US)/100 mi
271.56 Wh/mi
33,95km, 5,7kWh in according to the wattmeter. Mostly stop'n'go.
2011-08-15 28.87 mi
46.46 km
0.199 gal (US)
0.16 gal (Imp)
0.75 L
6.71 kWh
145.08 mpg (US)
180.44 mpg (Imp)
1.61 L/100 km
0.69 gal (US)/100 mi
232.42 Wh/mi
~20km at 80-100km/h, rest is stop'n'go city traffic. 6.7kWh into batteries.
2011-08-14 29.01 mi
46.69 km
0.262 gal (US)
0.22 gal (Imp)
0.99 L
8.83 kWh
110.73 mpg (US)
131.86 mpg (Imp)
2.12 L/100 km
0.9 gal (US)/100 mi
304.38 Wh/mi
46.7km driven, 8.8kWh went in according to a wattmeter.
2011-08-10 15.85 mi
25.51 km
0.128 gal (US)
0.11 gal (Imp)
0.48 L
4.31 kWh
123.83 mpg (US)
144.09 mpg (Imp)
1.88 L/100 km
0.81 gal (US)/100 mi
271.92 Wh/mi
Measured from the wall. Drove 25.5km (15.85 miles) and wattmeter showed 4.3kWh used for topping up the pack.
2011-07-17 29 mi
46.67 km
0.2 gal (US)
0.17 gal (Imp)
0.76 L
6.74 kWh
145 mpg (US)
170.59 mpg (Imp)
1.63 L/100 km
0.69 gal (US)/100 mi
232.41 Wh/mi
Calculated using Tools found from top navigation bar. If 1 litre of gasoline equals 8.87kWh and I used 78% of battery capacity (8.64kWh) then I used 0.76 litres of gasoline (or 0.2 gallons). Energy consuption isn't measured "from the wall". Will buy wattmeter some day and measure energy put back to batteries from the wall then.

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


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