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Fuel log graph
Efficiency log for: The DX Hatch - 1990 Honda Civic DX
  • Lifetime Fuel Economy: 46.2 mpg (US), 5.1 L/100 km, 55.5 mpg (Imp)
  • 90-day Fuel Economy: 45.9 mpg (US), 5.1 L/100 km, 55.1 mpg (Imp)
  • 3-tank Fuel Economy: 45.2 mpg (US), 5.2 L/100 km, 54.3 mpg (Imp)
  • EPA Combined Rating / % over rating: 30.5 mpg (US) / 50.5% (based on 90-day fuel economy)
  • Total fills: 9
  • Average cost per gal/L: $2.80 per gal (US); $0.00 per L (price data entered for 1 fill/s)
  • Average cost per fill: $28.56
  • Average distance cost: $0.06 per mi. / $0.04 per km
  • Total fuel used: 69.37 gal (US), 262.6 L
  • Total distance traveled: 3206.8 mi. / 5160.9 km
  • Total cost: $28.56
  • Total fuel saved vs. EPA: 35.8 gal. (US) / 135.5 L
  • Total saved: $100.24 (based on avg. cost per gal./L)
  • Average tank distance: 356.3 mi. / 573.4 km
Fill date Distance Fill amount Price Fuel Economy Details
2010-11-09 420 mi
675.92 km
9.56 gal (US)
7.96 gal (Imp)
36.19 L
322.17 kWh
43.93 mpg (US)
52.76 mpg (Imp)
5.35 L/100 km
2.28 gal (US)/100 mi
767.07 Wh/mi
I'm thinking the mileage is around the low-mid 40s because of a quick temperature drop and winter gas formulas.

Interestingly, my PCV catch has filled up pretty quickly. I am driving more miles on the highway and I put in Auto-RX. The stuff in the catch was more reddish than normal. What color is Auto-RX? Dark red.

My right front tire lets out air more quickly. Hopefully I can get that fixed soon.
2010-10-22 317 mi
510.16 km
7.12 gal (US)
5.93 gal (Imp)
26.95 L
239.94 kWh
44.52 mpg (US)
53.46 mpg (Imp)
5.28 L/100 km
2.25 gal (US)/100 mi
756.91 Wh/mi
Put in some Auto-RX on oil change just before this last fill up. Mileage obviously isn't drastically improving. But with time...we shall see.
2010-09-26 360.3 mi
579.85 km
7.6 gal (US)
6.33 gal (Imp)
28.77 L
256.12 kWh
47.41 mpg (US)
56.92 mpg (Imp)
4.96 L/100 km
2.11 gal (US)/100 mi
710.85 Wh/mi
Just replaced the transmission fluid. Added Honda fluid. Hope it helps a little!
2010-09-20 470 mi
756.39 km
10 gal (US)
8.33 gal (Imp)
37.85 L
337 kWh
47 mpg (US)
56.42 mpg (Imp)
5 L/100 km
2.13 gal (US)/100 mi
717.02 Wh/mi
2010-09-13 328.5 mi
528.67 km
7.021 gal (US)
5.85 gal (Imp)
26.58 L
236.61 kWh
46.79 mpg (US)
56.15 mpg (Imp)
5.03 L/100 km
2.14 gal (US)/100 mi
720.27 Wh/mi
Put on stock tires. 175-70-13. Last ones were 165s. High mpg's from the last ones will be gone. Now I'm getting the real numbers.

I've replaced TONS of bushings, in the front and rear suspension.

I also added HEET to this new tank.

Planning on trying Auto RX next month.
2010-08-10 279 mi
449.01 km
5.97 gal (US)
4.97 gal (Imp)
22.6 L
201.19 kWh
46.73 mpg (US)
56.14 mpg (Imp)
5.03 L/100 km
2.14 gal (US)/100 mi
721.11 Wh/mi
2010-08-04 260 mi
418.43 km
5.5 gal (US)
4.58 gal (Imp)
20.82 L
185.35 kWh
47.27 mpg (US)
56.77 mpg (Imp)
4.98 L/100 km
2.12 gal (US)/100 mi
712.88 Wh/mi
Just put in the new o2 sensor. Next fuel up should be a bit better?
2010-07-28 475 mi
764.44 km
10.2 gal (US)
8.49 gal (Imp)
38.61 L
343.74 kWh
$2.8
($28.56 total for this fill)
46.57 mpg (US)
55.95 mpg (Imp)
5.05 L/100 km
2.15 gal (US)/100 mi
723.66 Wh/mi
Recently, I've smelled a lot of unburnt fuel coming out the tail pipe. But my air/fuel gauge indicates I've been burning lean. Doesn't make sense, does it? A few months ago, while going up a long hill, my car's check engine light went on, said my O2 sensor was bad. Hm....I'm gonna be replacing that.
2010-07-18 297 mi
477.98 km
6.4 gal (US)
5.33 gal (Imp)
24.23 L
215.68 kWh
46.41 mpg (US)
55.72 mpg (Imp)
5.07 L/100 km
2.15 gal (US)/100 mi
726.2 Wh/mi

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


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