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Old 04-14-2007, 10:57 AM   #1
poison
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Default How big is an Impreza gas tank?

Dammit, my manual says 16.9 gallons or something insane, but my refill light goes on at just below a quarter tank, which takes about 10-11 to refill.
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Old 04-14-2007, 10:59 AM   #2
BigWrecKs
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the most i ever put in my WRX (05) was 13.7 gallons. Yes, the light was on for a while.
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Old 04-14-2007, 10:59 AM   #3
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Is the gas gauge linear? The temp certainly isn't.
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Old 04-14-2007, 10:59 AM   #4
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which impreza?
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Old 04-14-2007, 11:05 AM   #5
poison
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Ts (as if the put different gas tanks in each Impreza.)
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Old 04-14-2007, 11:05 AM   #6
bobturismo
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Quote:
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Ts (as if the put different gas tanks in each Impreza.)
they did
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Old 04-14-2007, 11:06 AM   #7
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Most Imprezas have a 15gal tank as far as I know. The '08s have a bigger tank with the new design.
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Old 04-14-2007, 11:08 AM   #8
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read your owners manual.

it should be 16.9, but its something like 14.1 lmp gl (lamp gallons), thats all it shows on the gauge. This is to to give you a 2.6 to 2.8 reserve quantity so you dont run out of gas.
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Old 04-14-2007, 11:09 AM   #9
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I've run out of gas before and cranked 14.95 gal in before it came out the filler neck.

*shrug*

I dunno.
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Old 04-14-2007, 11:10 AM   #10
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Yeah the manual states your reserve tank size. So unless you run the car with the light on for an extended period of time you won't ever have to fill it all the way back up.

Except apparently porter.
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Old 04-14-2007, 11:11 AM   #11
bobturismo
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Quote:
Originally Posted by Porter View Post
I've run out of gas before and cranked 14.95 gal in before it came out the filler neck.

*shrug*

I dunno.
Just because your car stalled out, doesn't mean you exhausted every ounce of fuel in the tank.
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Old 04-14-2007, 11:12 AM   #12
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I'd be inclined to follow the owners manual, but as I said, my light comes on at a frackin quarter tank, and as this thread shows everyone says something different.
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Old 04-14-2007, 11:14 AM   #13
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Oh, and why do I only get 22mpg, eh? It's all an interconnected conspiracy.
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Old 04-14-2007, 11:16 AM   #14
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Quote:
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Oh, and why do I only get 22mpg, eh? It's all an interconnected conspiracy.
I get 18... but I commute in the twisties at extra-legal speeds.
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Old 04-14-2007, 11:17 AM   #15
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Quote:
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I'd be inclined to follow the owners manual, but as I said, my light comes on at a frackin quarter tank, and as this thread shows everyone says something different.
That's odd, bad ground somewhere maybe?
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Old 04-14-2007, 11:19 AM   #16
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Dunno. I fill up around 220 miles, which leads me to believe I'm driving something fun and ferocious, like a 6.0 GTO...then I hit the gas, and accelerate to 60 in 9.4.
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Old 04-14-2007, 11:25 AM   #17
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the gas tank on my leggy is 16.9, and the light comes on at 2.9Gal left.

I read that in my manual, and have lived by it.
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Old 04-14-2007, 11:25 AM   #18
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not having the fuel computer in the Imprezas made it hard to determine, but at least on my new legacy ive run it very close to empty and actually filled it close to the stated 16.9 gallons. Plus my empty fuel light kicks in when i have an estimated 3-4 gallons left in the tank, usually when the trip computer indicates about 90 miles left in range.
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Old 04-14-2007, 11:32 AM   #19
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Legacy is 16.9 gallons. 1993-2001 Impreza is 14.9 gallons. 2002+ is 15.9 gallons. Look in the Owners Manual!

Realize you cannot use every drop of gas in the tank. So you can 'run out of gas' and still have gas in the tank. The fuel pickup is not touching the bottom of the tank, to reduce suction of dirt, etc. into the fuel pump. SO u cant use all 15.9 gal. or whatever.

If i fill up my bugeye right when the light comes on, I can put in 11-12 gallons. It seems like I can drive forever with the fuel light on and still never takes close to 15.9 gallons. I'm glad the light comes on when i have a few gallons left!
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Old 04-14-2007, 11:37 AM   #20
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Quote:
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Legacy is 16.9 gallons. 1993-2001 Impreza is 14.9 gallons. 2002+ is 15.9 gallons. Look in the Owners Manual!

If i fill up my bugeye right when the light comes on, I can put in 11-12 gallons. It seems like I can drive forever with the fuel light on and still never takes close to 15.9 gallons. I'm glad the light comes on when i have a few gallons left!
Right, exactly. So I have a 6 gallon reserve? PITA. I just want to know if I need to fill up after 10, or if I can live dangerously and go to 13.
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Old 04-14-2007, 11:42 AM   #21
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Mine is very linear as best I can tell, but it does say empty after about 14 gallons are gone. 2 gallons of reserve makes sense to me.

My old car was worse. For one thing the gauge wasn't linear at all. It was slow at first then sped up a little after the halfway mark. Even then empty meant it had only used about 10 or 11 of the 16 gallons.
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Old 04-14-2007, 12:21 PM   #22
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Quote:
Originally Posted by poison View Post
Right, exactly. So I have a 6 gallon reserve? PITA. I just want to know if I need to fill up after 10, or if I can live dangerously and go to 13.
You can go to ~14gal consistently without a problem.
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Old 04-14-2007, 12:34 PM   #23
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My WRX fuel guage was really nonlinear. I think the top half represented the first 2/3 of the fuel tank and then when it hit the halfway mark, it dropped like a rock and i was hitting empty before i knew it.

The LGT fuel indicator is much more linear, it actually corresponds to my real fuel capacity and expected range. midway point really means a half tank.

Ed
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Old 04-14-2007, 12:45 PM   #24
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Quote:
Originally Posted by McDade View Post
read your owners manual.

it should be 16.9, but its something like 14.1 lmp gl (lamp gallons), thats all it shows on the gauge. This is to to give you a 2.6 to 2.8 reserve quantity so you dont run out of gas.

What the hell is a lamp gallon?

It's imperial gallon (~1.2 US gallons). baaahahahahha
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Old 04-14-2007, 01:57 PM   #25
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I was about to point and laught too! Lamp gallon?
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