Low gas mileage in GDA - it's the driver's fault!
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Joined: Nov 2002
Posts: 52
From: Oregon
Low gas mileage in GDA - it's the driver's fault!
My WRX has been getting 16 mpg (mostly city) lately
Crappy mileage!!
I think it is so poor because:
- nearly every downshift I rev-match engine to tranny
rpm. Either double clutch or heel-toe or both, or just throttle blip with clutch in.
- I let the car warm up in idle for at least a couple minutes,
and sometimes let it cool down after a hard drive.
I usually don't push the car too hard (redline only occasionally) so it's not aggressive driving style that's killing my mileage I think.
What do you think?
Crappy mileage!!
I think it is so poor because:
- nearly every downshift I rev-match engine to tranny
rpm. Either double clutch or heel-toe or both, or just throttle blip with clutch in.
- I let the car warm up in idle for at least a couple minutes,
and sometimes let it cool down after a hard drive.
I usually don't push the car too hard (redline only occasionally) so it's not aggressive driving style that's killing my mileage I think.
What do you think?
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Joined: Mar 2002
Posts: 9,016
From: Oakland, CA
Car Info: 2009 wrx & 2000 4runner
well, when i am on the highway i get about 28mpg. in the city o get about 21-22mpg.
but i have filled up and calculated it out to about 13mpg. (lets say that it was a lot of driving without dropping below 5k rpm)
but i have filled up and calculated it out to about 13mpg. (lets say that it was a lot of driving without dropping below 5k rpm)
I got about 26-27 mixed hw/ct on my best tank. That was steady 65 on the freeway (any higher and highway mileage goes to pot) and lots of <3k rpm short shifts with otherwise regular driving in the city.
Lately I've been driving less, so when I do I punch it a bit more, and my mileage has been about 19-21 mixed.
Lately I've been driving less, so when I do I punch it a bit more, and my mileage has been about 19-21 mixed.
you know what's funny?
when I had MY01RS 4EAT I used to get 26-28 mpg (92 Oct)
Now I have MY02RS 5SPD I get 18-23 mpg (91 Oct)
But get this! Last time I went to Oregon TSD rally. I filled up (gas light came on) with 92 and drove back with 26-27 mpg.
when I had MY01RS 4EAT I used to get 26-28 mpg (92 Oct)
Now I have MY02RS 5SPD I get 18-23 mpg (91 Oct)
But get this! Last time I went to Oregon TSD rally. I filled up (gas light came on) with 92 and drove back with 26-27 mpg.
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Re: Low gas mileage in GDA - it's the driver's fault!
Originally posted by Ichiro
I let the car warm up in idle for at least a couple minutes
I let the car warm up in idle for at least a couple minutes
I can't see how that would affect your mileage. I let my car warm up every day - now, I have a N/A RS, but I still get around 28-30 mpg.
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I called subaru about warming up - they said no more than 30 seconds... and that it wasn't really needed and actually might be harmful (just keep it under 3k 'till its warm). Something about the engine staying at the same RPM when its cold.
-chris
-chris
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Posts: 15,425
From: Under your bed, in your closet, and in your head
Car Info: Corvette Z51
City driving is all I do on weekdays, and it kills my mileage. But there's nothing like uncorking on the freeways on the weekend 
Registered User
Joined: Nov 2002
Posts: 192
From: Plattsburgh, NY
Originally posted by cftarnas
I called subaru about warming up - they said no more than 30 seconds... and that it wasn't really needed and actually might be harmful (just keep it under 3k 'till its warm). Something about the engine staying at the same RPM when its cold.
-chris
I called subaru about warming up - they said no more than 30 seconds... and that it wasn't really needed and actually might be harmful (just keep it under 3k 'till its warm). Something about the engine staying at the same RPM when its cold.
-chris
gas
Originally posted by cftarnas
I called subaru about warming up - they said no more than 30 seconds... and that it wasn't really needed and actually might be harmful (just keep it under 3k 'till its warm). Something about the engine staying at the same RPM when its cold.
-chris
I called subaru about warming up - they said no more than 30 seconds... and that it wasn't really needed and actually might be harmful (just keep it under 3k 'till its warm). Something about the engine staying at the same RPM when its cold.
-chris
Btw, does anyone know why some people rev their engines just as they shut off the ignition? I've been thinking about it and I can't imagine why it would be a good thing.
