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Discussion Starter #1
Please Help
2000 Subaru Outback 2.5
120k miles
all new exhaust, downpipes through muffler
Both new O2 sensors
New knock sensor
New Fuel Filter
New brakes (rotors, calipers, and pads)
Cleaned throttle body

fuel is around 20 - 22 MPG HWY miles, 70 mile commute with average speeds of 65 MPH. Subaru advertises 28 MPG HWY and at one point i was averaging around 27. Any ideas where my fuel is going? I have yet to change air filter, but can that really drop me 6 MPG?
Thanks
 

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Premium Member
03 H6 OBW & 06 WRX Sportwagon
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17,816 Posts
any other symptoms? starts OK when warm? cold?

may need to get some live data.
 

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I simply cannot abide useless people.
2006 2.5i and 2002 3.0 wagons.
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12,304 Posts
Kaylee's fuel economy has dropped a bit in her "old age", but I mostly notice it in the city. In your conditions you should be in the upper 20s MPG.

Tires?
How much idle time?
Any fuel smell? Old lines can get weepy.
 

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Discussion Starter #4
Starts fine cold and idles fine. I haven't noticed any fuel smells but i have read a few other comments similar to that, i may need to investigate the fuel lines a little closer.
 
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