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Old 05-05-2013, 10:35 AM   #4251
gravitylover
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My mpg has been steadily going up as temps have warmed and winter gas is working itself out of the system. My commute is 110 miles round trip (in and out of downtown NYC) with 76 miles of highway driving, 11 miles of city streets and 23 miles of back roads. There is more than a fair bit of elevation gain/loss and very little flat other than in Manhattan where it is all flat but traffic lights every block or two. On winter gas I was running ~27.3 mpg and over the last five tanks it has gone up to ~30 with the last tank being 31.9 and the current tank is right about 35. Other than one short road trip I am running within a few mph of 30 avg. I am very curious to see what happens in two weeks when I have a nice long road trip into central NH.
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Old 05-05-2013, 07:10 PM   #4252
PA452
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New record for my car today at 34.97 hand calc. Computer said 35.1. That's also the slimmest gap I've had by far so far between the hand calc and the trip comp.

Since I've had the car each tank of gas has had at least a few commute trips on it, which is about 32 miles with maybe 30% city. I'd been averaging around 30-31 mpg. The tank I had today had a couple work trips and a lot of highway miles.

After filling up at one point today driving through the mountains interestingly enough I had the trip up to 60 miles and 39.9 mpg. Went down once I got off the bigger roads, but after for a few hours on a long trip, the trip computer is currently saying 38.1 mpg with about 225 miles on the tank. So I'm looking at another record for my car on this tank.
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Old 05-06-2013, 11:29 AM   #4253
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Best mpg I ever had was 34.1 and that was going down a lot of hills lol.
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Old 05-13-2013, 12:25 AM   #4254
ST Eye
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I had an interesting drive yesterday. Before my trip to Philly I filled up and continued to drive 70-72 MPH most of the way. When I got to my destination, my trip computer said 40.8! Temps were about 70 degrees. Later that evening I drove back home and the MPGs went down to 38.4 (temps were in the mid 60s) by the time I fueled up (at the same gas station at the same pump). I hand calculated 37.1! I can only think of two factors that caused my great gas mileage despite not driving 60-65 MPH. First off on my way up to Philly I was in moving traffic, perhaps the draft effect helped reduce the fuel consumption? And secondly the temps were higher on the way up. Whatever the case may be, I was pleasantly surprised on the results!
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Old 05-13-2013, 01:31 AM   #4255
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Drafting makes a BIG difference at speed.
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Old 05-13-2013, 09:11 PM   #4256
ST Eye
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I was always under the impression that you had to be right behind the car/truck in front of you. I make it a point to not get tailgate at all. I usually stay far back enough from the car in front of me.
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Old 05-13-2013, 09:15 PM   #4257
stevehnm
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You don't have to tailgate - you just have to be in the wind shadow. Of course the further back you are the less effective it is, but I agree on not tailgating.
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Old 05-13-2013, 09:23 PM   #4258
ST Eye
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Originally Posted by stevehnm View Post
You don't have to tailgate - you just have to be in the wind shadow. Of course the further back you are the less effective it is, but I agree on not tailgating.
Sweet, so I will be following people now on the highway!
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Old 05-14-2013, 01:45 PM   #4259
Jfriday1
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I average 33 here, with mostly freeway 70mph speeds. But I have seen 36-38 range if i drive 60
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Old 05-14-2013, 02:35 PM   #4260
Zauri
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Full city tanks net me about 23-25 mpg
Hitting the up to 20% gets me up to about 25/26(maybe 27 if i get lucky)Improved since it has been warmer.

All HW tanks have me at about 33.


Can't say there is much to gripe about
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Old 05-15-2013, 01:47 AM   #4261
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i was hoping for my first solid highway trip in a long while but alas, got stuck in standstill traffic (roadwork narrowed things down to 1 lane) where it took me 45 minutes to cover 4miles!

during that span, i saw my computer readout drop from 40.7mpg to 35.4

in the end, i covered 153.5mi (90% highway/10% city with that horrible stretch as part of the 90%), and after adjusting for odometer error (GPS and googlemaps were within 0.2mi of each other showing an underestimate on the odometer of 4%), i got 36.8mpg hand calculated. (the computer reported 38.1mpg)

not bad considering that idling for 45minutes, and the rest of the time driving 62.5-65mph, with lots of gentle up and down hills. (AC on only 5% of the time) i'm pretty sure i would have been near 40mpg if it weren't for that bad stretch.
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Old 05-15-2013, 05:49 AM   #4262
Caocao
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Those are great numbers!
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Old 05-15-2013, 01:18 PM   #4263
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More proof that everyone should **** off and stop bitching.

Yesterday I got exactly 36mpg driving 65mph on the highway with AC on full speed and about 4 miles of stop and go traffic over 30 miles of total driving.

No way to get a more accurate representation of real highway mpg.


And oh yeah, it was actually highway, not freeway. There are stoplights several places along the road and I got all reds.
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Old 05-15-2013, 02:07 PM   #4264
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Originally Posted by goregasm View Post
More proof that everyone should **** off and stop bitching.

Yesterday I got exactly 36mpg driving 65mph on the highway with AC on full speed and about 4 miles of stop and go traffic over 30 miles of total driving.

No way to get a more accurate representation of real highway mpg.

And oh yeah, it was actually highway, not freeway. There are stoplights several places along the road and I got all reds.
The speed at which your blower motor spins has nothing to do with gas mileage. AC on is AC on whether the fan is on low or high!
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Old 05-15-2013, 04:29 PM   #4265
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this is what i got after 2, 32 mile round trips to my work and back. Its not really highway or city, there are 6 stop lights on the way, 8 different speed limit changes, and some pretty good elevation changes. But this was my best effort to drive it for max mpg's. Coming from a Tacoma that got 15mpgs on its best day running premium I am loving this little hatch.
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Old 05-15-2013, 04:44 PM   #4266
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The speed at which your blower motor spins has nothing to do with gas mileage. AC on is AC on whether the fan is on low or high!
Nope. When you have your fan on 1 it doesn't cool off the AC unit as fast as if you have it on 4. Go try it. Leave your car on in your driveway and turn the fan on 1. It'll turn on and off a few times a minute. Put it on 4. A few times every 10 seconds.
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Old 05-15-2013, 07:23 PM   #4267
jsteg
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Originally Posted by goregasm View Post
Nope. When you have your fan on 1 it doesn't cool off the AC unit as fast as if you have it on 4. Go try it. Leave your car on in your driveway and turn the fan on 1. It'll turn on and off a few times a minute. Put it on 4. A few times every 10 seconds.
You're crazy man!! Lol...the cycling of the A/C has ZERO to do with the blower motor (fan speed) in the cabin of the car. It does however have 100% to do with line pressures (high side and low side, or Pressure and suction) and their corresponding pressure switches. You could unplug your blower motor and the A/C would still cycle on and off just like normal.
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Old 05-15-2013, 08:02 PM   #4268
myrt1987
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Good news, no more driving sweaty just because I want to save some pennies. lol
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Old 05-15-2013, 08:29 PM   #4269
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Originally Posted by jsteg View Post
You're crazy man!! Lol...the cycling of the A/C has ZERO to do with the blower motor (fan speed) in the cabin of the car. It does however have 100% to do with line pressures (high side and low side, or Pressure and suction) and their corresponding pressure switches. You could unplug your blower motor and the A/C would still cycle on and off just like normal.
Uh no. Try again hon'.
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Old 05-15-2013, 08:31 PM   #4270
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Good news, no more driving sweaty just because I want to save some pennies. lol
Isn't that a song," driving sweaty" or is it "driving nasty". Lol
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Old 05-15-2013, 08:34 PM   #4271
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Regardless you have to tint the windows cause these are rolling greenhouses without it. Hi blower is great for covering the crackling sound of the new factory speakers
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Old 05-15-2013, 08:43 PM   #4272
jsteg
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Uh no. Try again hon'.
Ok smart guy...explain then! I'd love to hear this! Don't call me hon either....
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Old 05-15-2013, 08:45 PM   #4273
ST Eye
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Quote:
Originally Posted by jsteg View Post
You're crazy man!! Lol...the cycling of the A/C has ZERO to do with the blower motor (fan speed) in the cabin of the car. It does however have 100% to do with line pressures (high side and low side, or Pressure and suction) and their corresponding pressure switches. You could unplug your blower motor and the A/C would still cycle on and off just like normal.
I don't think so, when you operate the a/c on a higher fan setting it requires the compressor to cycle longer or more often. I believe there is a temperature sensor on the evaporator that keeps a certain temperature, putting on a higher fan setting will change the temperature faster and cycling the compressor longer or more often. This is my understanding. I could check with my Subaru tech if you all really want.
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Old 05-15-2013, 08:51 PM   #4274
jsteg
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Quote:
Originally Posted by ST Eye View Post
I don't think so, when you operate the a/c on a higher fan setting it requires the compressor to cycle longer or more often. I believe there is a temperature sensor on the evaporator that keeps a certain temperature, putting on a higher fan setting will change the temperature faster and cycling the compressor longer or more often. This is my understanding. I could check with my Subaru tech if you all really want.
You can think all you want, that is wrong. All the fan (blower motor) does is move the cold air from the evaporator, through the ducts and into the cabin. It has nothing to do with how often the compressor cycles. But sure, don't take my word for it, (by the way, I am ASE certified and a certified refrigerant handler) go ask your Subie tech!
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Old 05-15-2013, 08:57 PM   #4275
jsteg
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Quote:
Originally Posted by G2Spfld View Post
Isn't that a song," driving sweaty" or is it "driving nasty". Lol
Quote:
Originally Posted by ST Eye View Post
I don't think so, when you operate the a/c on a higher fan setting it requires the compressor to cycle longer or more often. I believe there is a temperature sensor on the evaporator that keeps a certain temperature, putting on a higher fan setting will change the temperature faster and cycling the compressor longer or more often. This is my understanding. I could check with my Subaru tech if you all really want.
This will illustrate my point. Explain to me how spinning the blower motor makes the AC cycle faster or slower.

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