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Official Subaru Gas Mileage Thread

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Official Subaru Gas Mileage Thread

Old 04-20-2005, 08:07 PM
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Official Subaru Gas Milage Thread

With the high gas prices recently, there has been a huge amount of gas milage threads recently. This thread's purpose is to create a database of what people are managing in their diffrent subies. Please include in your post the following (or whatever you have)
Year/Model
Modified? Any mods that would directly affect the gas milage?
Octane used
Milage
Mostly City or highway driving?


Optional:
Price paid and where Know any good locations in your area that have better prices than anywhere else? Let us know!

Please also see This thread for miles-to-the-tank on WRX/STi.

EPA ratings for various subarus: Miles per gallon
2002-2005 2.0l Turbo WRX (EJ20)
Manual: City: 20 Highway: 27
Auto: City: 19 Highway: 26

2002-2005 2.5l N/A Forester: 2.5X, 2.5XS (EJ25)
Manual: City: 21 Highway: 27
Auto: City: 21 Highway: 27

2002-2005 2.5l N/A Impreza: 2.5RS, TS (EJ25)
Manual: City: 21 Highway: 28
Auto: City: 21 Highway: 27

2000-2004 2.5l N/A Legacy/Outback: 2.5GT, L, Limited, Base (EJ25)
Manual: City: 21 Highway: 27
Auto: City: 22 Highway: 28

2002-2004 3.0l N/A Outback: L.L.Bean, VDC (EZ30)
Manual: City: N/A Highway: N/A
Auto: City: 19 Highway: 26

2000-2001 2.5l N/A Impreza: 2.5RS (EJ25)
Manual: City: 21 Highway: 28
Auto: City: 23 Highway: 28

2000-2001 2.2l N/A Impreza (EJ22)
Manual: City: 23 Highway: 27
Auto: City: 23 Highway: 27

2004-2005 2.5l Turbo Forester: 2.5XT
Manual: City: 18 Highway: 23
Auto: City: 19 Highway: 23

2005+ 2.5l Turbo Legacy/Outback: 2.5GT, 2.5XT (EJ25)
Manual: City: 19 Highway: 25
Auto: City: 19 Highway: 24

2005+ 3.0l N/A Outback (EZ30)
Manual: City: N/A Highway: N/A
Auto: City: 19 Highway: 25

2005+ 2.5l N/A Legacy/Outback: 2.5i (EJ25)
Manual: City: 23 Highway: 28
Auto: City: 22 Highway: 28

More will be added, and if you see your model not listed feel free to find the stat's and I will add them to this list.
-Jeff

Last edited by Magish; 06-26-2006 at 08:15 PM.
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Old 04-20-2005, 08:12 PM
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I'll start:
2003 Forester 2.5X
Stock ( for now )
85 octane
23mpg
Mostly highway milage
314miles to the tank
$1.98 payed per gallon
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Old 04-20-2005, 08:26 PM
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Car Info: 2005 LGT wagon
2005 STi
Perrin turbo back
Injen Intake
91 Octane
Mostly highway milage
225 miles to the tank
$2.80/gallon
$.12/mile
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Old 04-21-2005, 10:22 AM
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Car Info: 05 WRX Wagon (Crystal Gray)
2005 WRX Wagon
Cobb Stg1 (AccessPort)
K&N Panel Filter
91 Octane
25-26 Mpg
17k miles
Mostly Highway
340 miles to a tank
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Old 04-22-2005, 08:05 PM
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Location: Arcade, NY
Posts: 462
Car Info: 2004 2.5TS manual
2004 2.5 TS

My Mods:
Booster seat (in back) for 3 yr old co-driver
CD holder on visor
$5 sunglasses
assorted candy wrappers

I get anywhere from 25-30 mpg
The low end torque makes it fun to mess with ricers at the traffic lights. My mileage might be better otherwise.

I plan on getting a cobb stage 1 power package this summer to help open the top end up a bit. Hope that doesn't affect the mileage too much.

Last edited by Kuth678; 04-22-2005 at 08:09 PM.
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Old 04-22-2005, 11:20 PM
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Location: Reno, NV
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Car Info: 1993/2000/2001 GF4 mostly red
2001 RS

Cobb intake, Borla header, 2.25" catback, Exedy clutch and flywheel

If I take a long highway trip, usually 28-29 mpg averaging 75 mph. If I'm in town for the whole tank, it's usually closer to 23. I tend to shift at 3k at the highest, 3-4 shift is actually 2500. I try to keep cruising RPM as close to 2k as possible. Obviously if I'm going more than 45 mph it's higher, as 75 is at about 3400 for me.
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Old 04-23-2005, 01:38 AM
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Join Date: Dec 2002
Location: Sacramento CA
Posts: 10,029
Car Info: 02 Impreza WRX sedan
Year/Model: MY02 WRX sedan.
Modifications: Catless uppipe, 3" catback, factory downpipe. Vishnu Stage Zero reflash. None of these mods are expected to impact fuel economy significantly on the open road at a constant speed.
Octane used: 91 (R+M/2) octane, which is standard CA watered-down pump gas.
Mileage: 22 to 23 mpg during average weekly commute, which includes fairly heavy stop-and-go highway traffic.

My last 200-mile trip netted me 29.89 mpg consisting of almost all highway travel at a constant 65 mph. This also included some long grades, both uphill and downhill.

My worst fuel economy was achieved during a track day at Thunderhill Raceway in Willows CA. While the drive to the track was uneventful with a guesstimated 27 mpg (some full-throttle passing of slow-moving traffic caravans), I arrived at the track with more than 3/4 of a tank of gas. After about four 20-minute track sessions, I was down to about 1/8 of a tank! I wish I'd saved the gasoline receipts so I could figure out the true mileage using algebra. I can speculate that my average mpg during track sessions was about 10 mpg.

I believe it is possible to beat the EPA estimated highway fuel economy numbers in a near stock WRX but a constant speed must be maintained to do so. I also think that maintaining highway speeds of 75+ may see mileage numbers start to creep back down due to increased wind resistance. Power needed to overcome this resistance is exponential, not linear.

The EPA fuel economy test cycle is driven over a closed course and is not real world driving, therefore the last three vehicles (two non-Subaru) I've owned have all bettered the highway numbers if I don't encounter traffic.

--
0==WW==0
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Old 04-23-2005, 01:46 PM
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Join Date: Feb 2003
Location: Nether reach of CA delta
Posts: 414
Car Info: 03 WRX Sedan MBP/17X7.5 SSR Comps/225 Kumho MX
Year/Model/Tranny: 2003 WRX Sedan 5MT
Mods effecting MPG: K&N Panel Filter, 17 X 7.5 SSR Comps, 225 45 17 Kumho MXs
Octane: 91
MPG: Average based an actual MPG figures logged since 2/1/05: 22 MPG. Best tank MPG: 27.5 MPG. Worst tank MPG: 18 MPG
Driving conditions: Mostly freeway commuting, flat terrain @ 65-72 MPH 250 miles per week.
Recent price paid: $2.79/gal
Miles per tank: I usually fill up near the 1/4 tank mark, around 260 miles per tank
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Old 04-23-2005, 10:27 PM
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Join Date: Apr 2003
Location: Las Vegas
Posts: 174
Car Info: 2005 STI
Year/Model/Tranny: 2002 wrx sedan 5MT
Mods effecting MPG: K&N Panel Filter, 17 X 7.5 Rota Tarmac, 225 45 17 pirelli nero ms, hks DP, borla hush cat back, k&n panel filter, HKS UP, acessport stage 2
Octane: 93
MPG: about 16.8 mpg all city easy driving. about 25 mpg all highway driving at about 80. At pump, i fill up the tank and then divide the miles driven on trip meter by gallons pumped.
Recent price paid: $2.43/gal
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Old 04-24-2005, 06:14 PM
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Location: Houston, Texas "Drive it like you stole it.." 13.034 @ 105.19 mph
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Car Info: Aspen White 04 STI, Silver 03 RS (wife's car)
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Year/Model/Tranny: 2004 STI Sedan 6MT
Mods effecting MPG: APS 3.5 TBE, STAGE 2 COBB AP
Octane: 93
MPG: Average based an actual MPG figures logged since 4/1/05: 15 MPG. Best tank MPG: 22 MPG. Worst tank MPG: 13 MPG
Driving conditions: Mostly racing (from a dig or roll ons) 10 to 150 MPH, miles per week (varies).
Recent price paid: $2.89/gal
Miles per tank: I usually fill up near empty (or on fumes), and from there it depends.
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Old 04-24-2005, 10:58 PM
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Car Info: sold 2012 wrx sedan (sold 02 WRX wagon)
Year/Model/Tranny: 2002 WRX Wagon 5MT
Mods effecting MPG:
Octane: 91
MPG: 16-18 city; 24-28 highway.
Driving conditions: Very short commute to work, 3.5 miles.
Recent price paid: $2.83/gal

Last edited by spelk3; 04-24-2005 at 11:01 PM.
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Old 04-25-2005, 05:47 PM
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Location: Lusby, MD
Posts: 175
Car Info: '02 2.5 RS
Year/Model/Tranny: 2002 Impreza 2.5 RS 5MT
Mods: No engine mods
Octane: 89
MPG: 25 consistently
Conditions: Highway/Backroads
Price/Place: $2.19 Wawa
Mile per Tank: 270-280
Gallons per Tank: Almost every time 11
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Old 04-25-2005, 05:49 PM
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Location: stpr country
Posts: 6
Car Info: imprezza
95 imp
1.8 w/ 175000 miles on it!
29city 32highway
no mods

she is old but it is still my favorite daily driver

2001 forester
2.5 w/ 129000 miles on it.
26city 28highway
no mods

my wife's daily driver

69 camaro
327 ballanced blue printed 10.5-1CR 750holley double pumper 12.7 in the 1/4
12city 15highway (if i'm lucky)

93 octane $2.45
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Old 04-26-2005, 03:09 PM
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Join Date: Apr 2003
Location: Arcadia, CA
Posts: 257
Car Info: 2003 GGA
2003 WRX Wagon
Cobb Accessport Stage 1
California 91 Octane (76 or Chevron)
21mpg +/- .5mpg - mixed highway and city

I put my accessport in Economy mode for a gastank and netted only +1mpg. Not worth the 1/2 gallon, or so, of gas I saved compared to the loss of performance. It was almost dangerous. One becomes accustomed to the power quickly and the difference between Stage 1 and economy is dramatic.

BTW, accessport did not noticeably affect my mileage.

Last edited by Clint Torres; 04-26-2005 at 04:15 PM.
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Old 04-26-2005, 03:50 PM
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Join Date: Jul 2004
Location: Northern California
Posts: 3,969
Car Info: 04 STi
2004 WRX STi
Stock
California 91 Octane (Always at 76)
17 mpg +/- 1 mpg.

I get terrible gas mileage no matter how I drive. High revs, low revs, it doesn't matter. Bad gas mileage!

-GDO
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