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2009 Subaru Forester mileage reports

106 messages,  Last post on Oct 27, 2009 at 11:11 AM

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#97 of 106
Re: back up again [howellhaus] by ecotrklvr
Oct 15, 2009 (8:15 am)
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Replying to: howellhaus (Sep 30, 2009 1:58 pm)

Antifreeze vapor could be getting past one of the gaskets in the radiator cap. The smaller one in the center holds pressure in the radiator; the larger one keeps the liquid (and vapor) ion the system when antifreeze flows from radiator to overflow tank (when hot), and back again (when engine & radiator cool down). When engine and radiator are cold, remove the cap and check both gaskets.
#98 of 106
Re: back up again [ecotrklvr] by howellhaus
Oct 15, 2009 (10:05 pm)
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Replying to: ecotrklvr (Oct 15, 2009 8:15 am)

How about blown head gasket...? Had it in to Gary's Subaru in West Eugene. $2000 later I've had three error codes fixed, replaced the head gaskets (both), water pump, all belts including the timing belts (overdue), O2 sensor, removed heat shields (rattling like the dickens) and the left rear wheel bearing. Funny thing is, the radiator hoses are still original and working fine...?
#99 of 106
Antifreeze by ecotrklvr
Oct 16, 2009 (8:25 am)
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Replying to: howellhaus (Oct 15, 2009 10:05 pm)

For you to smell the antifreeze under the hood, it has to be leaking into that area. More likely it's a leak of a loose hose clamp, bad gasket in radiator cap, overflow canister lid/gasket, thermostat housing gasket; something more benign than head gasket.
#100 of 106
Really bad gas mileage by pmoffnsf
Oct 24, 2009 (9:36 am)
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I was wondering if anyone else is getting on average about 12-13 miles to the gallon in the city? I live in San Francisco and one of the reasons I bought my 09 Forrester was the city mileage. While I knew I wouldn't get the 20 something on the sticker I was hoping for 15-16.
#101 of 106
Re: Really bad gas mileage [pmoffnsf] by billwv
Oct 24, 2009 (6:45 pm)
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Replying to: pmoffnsf (Oct 24, 2009 9:36 am)

"I was wondering if anyone else is getting on average about 12-13 miles to the gallon in the city? I live in San Francisco and one of the reasons I bought my 09 Forrester was the city mileage."
 
That sounds really bad. I live in WV and while not city driving, I drive mostly up and down hills with virtually no interstate driving. Over the last year my readout shows 21.9, which is about what I expected.
 
Unless you are sitting in traffic for hours, I would think you should do better.
Much has to do with how much driving you do with a cold engine versus a fully warmed engine -- short trips really hurt mpg.
 
Hopefully others will respond, but I would have it checked.
 
Bill
#102 of 106
Re: Really bad gas mileage [pmoffnsf] by johnv STAFF
Oct 24, 2009 (8:31 pm)
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Replying to: pmoffnsf (Oct 24, 2009 9:36 am)

Do you drive Lombard to work both ways? I'm on the other side of the bay in an 08 manual and the worst mileage I've seen is just below 20mpg. I average ~25mpg and come close to 29 on tanks where I've come down the 80 from the mountains.
 
They say the car gets better mileage after being broken in, but 13 is ridiculous unless you're driving hills constantly or just sitting in traffic. SF is a hilly city -- if you just drove from Diamond Heights down to the Castro or Balboa Park I could imagine your mpg being really bad.
#103 of 106
Re: Really bad gas mileage [billwv] by xwesx
Oct 26, 2009 (8:36 am)
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Replying to: billwv (Oct 24, 2009 6:45 pm)

That is what I was thinking, too: Short trips with significant idling.
 
What was your previous vehicle, and what mileage did you see from it on the same trips?
#104 of 106
Re: Really bad gas mileage [xwesx] by pmoffnsf
Oct 26, 2009 (10:28 am)
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Replying to: xwesx (Oct 26, 2009 8:36 am)

Unfortunately, most of my trips are short, but not much idling. A lot of hills. My last car was a BMW X5 and I got the same type of mileage with a much larger engine. The main reason for getting the Forrester was due to the city mileage.
#105 of 106
Re: Really bad gas mileage [johnv] by pmoffnsf
Oct 26, 2009 (10:30 am)
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Replying to: johnv (Oct 24, 2009 8:31 pm)

Most of my trips are up and down hills as I do live above the Castro, but I do drive all over the city, I wouldn't say constantly sitting, but a lot of stop and go. Still I think 13 is way too low.
#106 of 106
Re: Really bad gas mileage [pmoffnsf] by ateixeira
Oct 27, 2009 (11:11 am)
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Replying to: pmoffnsf (Oct 26, 2009 10:28 am)

Try to combine errands when possible. In other words, start the engine when it's still warm from the last trip.
 
It takes about 2 miles for ours to warm up. No matter where we seem to drive, the average MPG will drop at first, then start to go back up again.
 
It's notably less efficient while it's warming up.

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