2004 Subaru Impreza wagon WRX Gas Mileage (RockMagnet)

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Efficiency log for: RockMagnet - 2004 Subaru Impreza wagon WRX

Lifetime Fuel Economy: 25.7 mpg (US), 9.1 L/100 km, 30.9 mpg (Imp)
90-day Fuel Economy: 26.2 mpg (US), 9 L/100 km, 31.4 mpg (Imp)
3-tank Fuel Economy: 27.8 mpg (US), 8.5 L/100 km, 33.3 mpg (Imp)
EPA Combined Rating / % over rating: 20 mpg (US) / 30.8% (based on 90-day fuel economy)
Total fills: 8
Average cost per gal/L: $2.15 per gal (US); $0.00 per L (price data entered for 7 fill/s)
Average cost per fill: $22.83
Average distance cost: $0.08 per mi. / $0.05 per km
Total fuel used: 85.43 gal (US), 323.4 L
Total distance traveled: 2199 mi. / 3539 km
Total cost: $159.80
Total fuel saved vs. EPA: 24.5 gal. (US) / 92.7 L
Total saved: $52.68 (based on avg. cost per gal./L)
Average tank distance: 274.9 mi. / 442.4 km

Fill date	Distance	Fill amount	Price	Fuel Economy	Details
2009-05-17	291 mi 468.32 km	10.04 gal (US) 8.36 gal (Imp) 38.01 L 338.35 kWh	$2.45 ($24.6 total for this fill)	28.98 mpg (US) 34.81 mpg (Imp) 8.12 L/100 km 3.45 gal (US)/100 mi 1162.71 Wh/mi	I don't trust the pump, I think the next tank will appear much worse.
2009-05-07	294 mi 473.15 km	11.14 gal (US) 9.28 gal (Imp) 42.17 L 375.42 kWh	$2.42 ($26.96 total for this fill)	26.39 mpg (US) 31.68 mpg (Imp) 8.91 L/100 km 3.79 gal (US)/100 mi 1276.94 Wh/mi
2009-03-25	308 mi 495.68 km	10.99 gal (US) 9.15 gal (Imp) 41.6 L 370.36 kWh	$2.07 ($22.75 total for this fill)	28.03 mpg (US) 33.66 mpg (Imp) 8.39 L/100 km 3.57 gal (US)/100 mi 1202.47 Wh/mi	This was the result of 150 mile fun run through the mountains, no hypermiling techniques were used on that part of this tank.
2009-03-20	205 mi 329.92 km	8 gal (US) 6.66 gal (Imp) 30.28 L 269.6 kWh	$2.019 ($16.15 total for this fill)	25.63 mpg (US) 30.78 mpg (Imp) 9.18 L/100 km 3.9 gal (US)/100 mi 1315.12 Wh/mi
2009-03-08	299 mi 481.19 km	12.07 gal (US) 10.05 gal (Imp) 45.69 L 406.76 kWh	$2.05 ($24.74 total for this fill)	24.77 mpg (US) 29.75 mpg (Imp) 9.5 L/100 km 4.04 gal (US)/100 mi 1360.4 Wh/mi	First tank with front undertay. Still tuning for 18psi. Engine load ran off the end of the stock table, so I had to rescale fuel and timing maps.
2009-02-22	260 mi 418.43 km	11.09 gal (US) 9.23 gal (Imp) 41.98 L 373.73 kWh	$2.05 ($22.73 total for this fill)	23.44 mpg (US) 28.17 mpg (Imp) 10.03 L/100 km 4.27 gal (US)/100 mi 1437.42 Wh/mi	Trying to tune for 18psi, and missing by -1.5psi
2009-02-09	270 mi 434.52 km	11 gal (US) 9.16 gal (Imp) 41.64 L 370.7 kWh		24.55 mpg (US) 29.48 mpg (Imp) 9.58 L/100 km 4.07 gal (US)/100 mi 1372.96 Wh/mi
2009-01-25	272 mi 437.74 km	11.1 gal (US) 9.24 gal (Imp) 42.02 L 374.07 kWh	$1.97 ($21.87 total for this fill)	24.5 mpg (US) 29.44 mpg (Imp) 9.6 L/100 km 4.08 gal (US)/100 mi 1375.26 Wh/mi

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