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Fuel log graph
Efficiency log for: Big Blue Hippo - 2006 Chevrolet HHR 2LT
  • Lifetime Fuel Economy: 41.5 mpg (US), 5.7 L/100 km, 49.8 mpg (Imp)
  • 90-day Fuel Economy: 46 mpg (US), 5.1 L/100 km, 55.2 mpg (Imp)
  • 3-tank Fuel Economy: 45.5 mpg (US), 5.2 L/100 km, 54.6 mpg (Imp)
  • EPA Combined Rating / % over rating: 22 mpg (US) / 109% (based on 90-day fuel economy)
  • Total fills: 10
  • Average cost per gal/L: $3.56 per gal (US); $0.00 per L (price data entered for 10 fill/s)
  • Average cost per fill: $46.35
  • Average distance cost: $0.09 per mi. / $0.05 per km
  • Total fuel used: 130.37 gal (US), 493.5 L
  • Total distance traveled: 5405.7 mi. / 8699.6 km
  • Total cost: $463.49
  • Total fuel saved vs. EPA: 115.3 gal. (US) / 436.5 L
  • Total saved: $410.47 (based on avg. cost per gal./L)
  • Average tank distance: 540.6 mi. / 870 km
Fill date Distance Fill amount Price Fuel Economy Details
2012-09-02 483 mi
777.31 km
10.303 gal (US)
8.58 gal (Imp)
39 L
347.21 kWh
$3.769
($38.83 total for this fill)
46.88 mpg (US)
56.29 mpg (Imp)
5.02 L/100 km
2.13 gal (US)/100 mi
718.86 Wh/mi
Another summer time goodness tank. This will be my last tank as a full hypermiler. This "hobby" has become obsessive for me, and it's making me into a weirdo...avoiding taking the HHR when it might take me into stop-n-go traffic situations, going far out of my way if it means avoiding traffic, and such. I will still drive efficiently, but no more EOC, no more avoiding traffic. I'm going back to being a normal person. I suspect my mpg will still be above 35, which is still very respectable for such a roomy, practical vehicle.
2012-07-04 672.4 mi
1082.12 km
14.822 gal (US)
12.34 gal (Imp)
56.11 L
499.5 kWh
$3.509
($52.01 total for this fill)
45.36 mpg (US)
54.49 mpg (Imp)
5.19 L/100 km
2.2 gal (US)/100 mi
742.86 Wh/mi
Summer time goodness! Despite the 38 cent price drop from the previous tank, I'm still using 91 octane gas (the highest octane you can get around here).
2012-05-07 623.4 mi
1003.27 km
13.968 gal (US)
11.63 gal (Imp)
52.87 L
470.72 kWh
$3.889
($54.32 total for this fill)
44.63 mpg (US)
53.6 mpg (Imp)
5.27 L/100 km
2.24 gal (US)/100 mi
755.09 Wh/mi
Almost summer-like weather for most of the tank. It was still winter gas in that tank since it was previously filled in March.
2012-03-22 646.5 mi
1040.44 km
15.232 gal (US)
12.68 gal (Imp)
57.66 L
513.32 kWh
$3.869
($58.93 total for this fill)
42.44 mpg (US)
50.99 mpg (Imp)
5.54 L/100 km
2.36 gal (US)/100 mi
794 Wh/mi
Weather started warming up.
2012-02-15 606.2 mi
975.58 km
14.645 gal (US)
12.2 gal (Imp)
55.44 L
493.54 kWh
$3.399
($49.78 total for this fill)
41.39 mpg (US)
49.69 mpg (Imp)
5.68 L/100 km
2.42 gal (US)/100 mi
814.15 Wh/mi
Despite cold snowy weather and winter gas, I ended up doing pretty well this time. Presumably because I'm becoming more accustomed to the car. Unless otherwise noted, I'm using 91 octane exclusively.
2011-12-18 513.5 mi
826.4 km
12.973 gal (US)
10.8 gal (Imp)
49.11 L
437.19 kWh
$3.059
($39.68 total for this fill)
39.58 mpg (US)
47.55 mpg (Imp)
5.94 L/100 km
2.53 gal (US)/100 mi
851.39 Wh/mi
Colder temps and snowy weather. Had about 20 miles of stop-n-go traffic jam because of the weather. Filled up early because gas was cheap.
2011-12-01 628.6 mi
1011.63 km
15.057 gal (US)
12.54 gal (Imp)
57 L
507.42 kWh
$3.189
($48.02 total for this fill)
41.75 mpg (US)
50.13 mpg (Imp)
5.63 L/100 km
2.4 gal (US)/100 mi
807.22 Wh/mi
Weather a bit colder, but not too bad for this time of year. Still using 91 octane.
2011-10-13 626.4 mi
1008.09 km
14.804 gal (US)
12.33 gal (Imp)
56.04 L
498.89 kWh
$3.529
($52.24 total for this fill)
42.31 mpg (US)
50.8 mpg (Imp)
5.56 L/100 km
2.36 gal (US)/100 mi
796.44 Wh/mi
First full tank using hypermiling techniques, and 90+ octane. This is mostly commute mileage.
2011-09-09 234.6 mi
377.55 km
6.729 gal (US)
5.6 gal (Imp)
25.47 L
226.77 kWh
$3.759
($25.29 total for this fill)
34.86 mpg (US)
41.89 mpg (Imp)
6.75 L/100 km
2.87 gal (US)/100 mi
966.62 Wh/mi
This tank fill was upon arriving home. It still measures driving the vehicle home from AZ (where purchased) at around 72 mph avg. All highway mileage, but with higher octane (previous fill was with 11.8 gallons, but it has a 16.2 gal tank so ~4.5 gallons were still 87 octane).
2011-09-09 371.1 mi
597.23 km
11.841 gal (US)
9.86 gal (Imp)
44.82 L
399.04 kWh
$3.749
($44.39 total for this fill)
31.34 mpg (US)
37.64 mpg (Imp)
7.5 L/100 km
3.19 gal (US)/100 mi
1075.29 Wh/mi
Driving the car from AZ where I purchased it back home to NM. All highway miles at ~72 mph avg. The seller filled the tank with regular 87 octane gas (very nice of him), but the engine is designed for 91 octane. Before getting on the road, I topped off with 91 (to make sure the next measurement was with a similar fill), but it took less than half a gallon. I refilled with 91 this time, but this tank measures the mpg with the 87 (plus less than half gallon of 91).

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


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