Outlook Gas Mileage - What to do???? - Saturn Outlook Online Community
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post #1 of 33 (permalink) Old 02-15-2010, 09:29 AM Thread Starter
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Outlook Gas Mileage - What to do????

We purchased our outlook Aug 09 and have been getting poor gas mileage ever since. I have the XE AWD, and drive mostly highway everyday. I get about 15 mpg. From the beginning, I was told by the dealer I need more miles, now I am at 11k and still same poor mileage, even long trips that are 100% highway, 65 mgh, I get about 19 - 21, but not often. I think we got it twice. I do not have a DIC, I calcuate it every time I fill up. I had it at 2 different dealers for testing to see if they can find anything wrong with it and they can't and do not have any suggestions.

Can anyone let me know where I should go next? I think there is something wrong with the car, even though the "computer" says different.
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post #2 of 33 (permalink) Old 02-15-2010, 10:31 AM
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Re: Outlook Gas Mileage - What to do????

try 55-60 mph if possible. try getting behind a semi that does 55-60.
You should see mileage increase a little... the faster you go- mileage goes right down.

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post #3 of 33 (permalink) Old 02-15-2010, 01:57 PM Thread Starter
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Re: Outlook Gas Mileage - What to do????

Thanks, but what about the very day travel. My average speed is about 45 mph and I am only gettting 15 mpg.
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post #4 of 33 (permalink) Old 02-15-2010, 04:27 PM
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Re: Outlook Gas Mileage - What to do????

More info on your driving habits is needed to even start to help;

1)Where do you live? Lots of stop and go? Heavy traffic?

2)Do you accelerate quickly? Gun it a alot?

This topic has been discussed at length on all the forums. I get 12 to 14 in town. Lots of stop and go. I get 19 to 23 on the highway depending on wind direction. The best speed for optimal MPG is 60 to 65, hit 70 and it will drop.

When you fill up are you filling up to the same point each time. 1st click or do you keep topping off. I don't know of anyone that has found a mechanical reason for low MPG. I got the same mileage on my 07 Outlook that didn't have the DI engine that I get now on my 09 Acadia that has a DI.

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post #5 of 33 (permalink) Old 02-15-2010, 07:11 PM
Tim
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Re: Outlook Gas Mileage - What to do????

Quote:
Originally Posted by jacksaturn
Thanks, but what about the very day travel. My average speed is about 45 mph and I am only gettting 15 mpg.
Attached is a table of my gas purchases and DIC info since day 1. I see two entries where the DIC MPH was 45.

Date Odometer Miles Pump Gallons MPG DIC Miles DIC MPG DIC Gal. DIC MPH
09/14/2008 6,953 330 15.519 21.3 330.0 21.4 15.4 45.0
09/06/2009 17,118 435 17.290 25.2 435.7 24.1 18.1 45.0

Must of had a headwind on 9/14/2008.

I accelerate slow - RPM max is usually ~2200 or below before it shifts. I also try to drive close to the shift points for lowest RPM.

Shift Points MPH
1-2 8
2-3 18
3-4 24
4-5 32 (Will stay in gear at 33, not 32. All others are ok.)
5-6 44

I think those are actually torque converter lock-up speeds.

Sometimes that puts me above the speed limit - e.g., 44 in a 40 zone - and sometimes below the speed limit - e.g., 45 in a 50 zone. I do drive 35 in the 35 zone as I'm already getting the drivers behind me upset. But, if the traffic would do 45 in the 35 zone, I would to. Seems about 5 over is what most people do in town.

I drive 65 on the IL toll roads and 68 on the Indiana Turnpike. Faster then the trucks and slower then all the cars in Indiana.

I use the speed control all the time - even on my short 7 mile drive to/from work. I notice many times when the car won't shift or won't lock up the torque converter until I turn on the speed control. I think that's odd and often wonder if the computer may be doing something else. I see this all the time with my desk top computer and Windows Vista too.

My wife asks why I didn't drive like this 20 years ago. I tell her gas wasn't $3 20 years ago.

Anyway, probably more information then you wanted. And, none of it answers your question.






Attached Files
File Type: pdf Gas Log.pdf (141.3 KB, 2 views)

2008 Saturn Outlook XR FWD
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post #6 of 33 (permalink) Old 02-15-2010, 10:31 PM
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Re: Outlook Gas Mileage - What to do????

Good post Tim - I agree with your statement to your wife about why you didn't drive like this 20 years ago....


I also try to keep my RPMs at 2000 or below - upsetting many drivers around me I'm sure, however I usually do not go really slow unless I"m on double lane roads, it lets the angry drivers speed around me to the next red light... Happens pretty often...

My average over 8700 miles is 21.46... Lowest 17.36, Highest 24.47. Not bad I think.

Here is my gas log since I bought the Outlook
MPG
2010-02-11 381 mi. 16 US gal $3.279 23.81 US
2010-02-06 424 mi. 21.28 US gal $2.349 19.92 US
2010-02-02 366 mi. 15.01 US gal $2.369 24.38 US
2010-01-27 424 mi. 20.04 US gal $2.429 21.16 US Ave MPH 29.1
2010-01-14 422 mi. 19.85 US gal $2.459 21.26 US Ave MPH 33
2010-01-06 277.5 mi. 15.41 US gal $2.549 18.01 US Ave MPH 27.7
2009-12-23 415.7 mi. 18.6 US gal $2.359 22.35 US Ave MPH 28.5
2009-12-12 466 mi. 22.56 US gal $2.329 20.66 US Ave MPH 29.1
2009-12-04 506 mi. 21.76 US gal $2.499 23.25 US Ave MPH 41.1
2009-11-27 572.5 mi. 23.4 US gal $2.499 24.47 US Ave MPH 54.2
2009-11-23 315.2 mi. 16.95 US gal $2.439 18.6 US Ave MPH 25.7
2009-11-12 425.4 mi. 20.38 US gal $2.439 20.87 US Ave MPH 27.4
2009-10-30 424.5 mi. 21.3 US gal $2.479 19.93 US Ave MPH 27.4
2009-10-16 411.7 mi. 18.7 US gal $2.329 22.02 US Ave MPH 26.3
2009-10-02 412.9 mi. 18.7 US gal $2.159 22.08 US Ave MPH 34.1
2009-09-24 570 mi. 23.12 US gal $2.459 24.65 US Ave MPH 55.1
2009-09-23 385 mi. 16.95 US gal $2.239 22.71 US Ave MPH 29.9
2009-09-11 381 mi. 18.85 US gal $2.339 20.21 US Ave MPH 30.5
2009-09-03 446 mi. 21.88 US gal $2.389 20.38 US
2009-08-30 412 mi. 18.92 US gal $2.489 21.78 US
2009-08-28 320 mi. 18.43 US gal $2.499 17.36 US

2009 Outlook XR FWD - Silver Moss - tan interior - dual skyscape sunroof - dual headrest DVD, In dash Navi, Tow pckg, side step bars, splash guards, HIDs. - 78k miles<br />1993 SL2 Silver - sunroof - 224k miles
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post #7 of 33 (permalink) Old 02-15-2010, 11:03 PM
Tim
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Re: Outlook Gas Mileage - What to do????

Quote:
Originally Posted by Wingmn
My average over 8700 miles is 21.46...

2009-11-27 572.5 mi. 23.4 US gal $2.499 24.47 US Ave MPH 54.2
2009-09-24 570 mi. 23.12 US gal $2.459 24.65 US Ave MPH 55.1
21.46 - about 1 MPG better than mine. Must be the DI engine.

23.4 and 23.12 gallons?? I'm beginning to wonder if I really have a 24 gallon tank. I'm thinking of putting a gas can in the back and drive until it runs out just to see what the DIC would say. The DIC stops telling me miles to go around 40 miles. Even then, it won't take 22 gallons. The most I ever put in was 21.7 gallons. Maybe when the miles to go stops declining, I should just switch over and watch the gallons used until it gets over 23.5.

Hopefully, jacksaturn can give our driving techniques a try and see if his mileage improves.

P.S. Next time my wife asks me why I keep writing down all this stuff I can tell her I'm helping other Lambda owners and besides I'm not the only one!

2008 Saturn Outlook XR FWD
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post #8 of 33 (permalink) Old 02-16-2010, 02:29 PM
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Re: Outlook Gas Mileage - What to do????

yeah, 23.1 gallons, all my data is hand calculated MPG and Gallons posted from my gas receipts, not from the DIC.

I tend to top off on long trips. I know it's not good, I know.. but when I do - I can usually put 2.5 gallons in after the first click (stop).

I've been topping off my 93 SL2 since I bought it in 1996. I only top off the Outlook 1 gallon after first stop now, I know it can cause problems with the emissions system more in a newer car than the older ones. So, reason why I do the full 2.5 gallons on a long trip is after 23, or 24 miles (like 20 mins of driving) that extra gallon is already consumed.. So the extra gas that I filled into the neck of the gas tank isn't there after 20 mins.. (anyone can justify to themselves something that they shouldn't do, even if it's not wise)

So, yes, I did put 23.1 gals one time

2009 Outlook XR FWD - Silver Moss - tan interior - dual skyscape sunroof - dual headrest DVD, In dash Navi, Tow pckg, side step bars, splash guards, HIDs. - 78k miles<br />1993 SL2 Silver - sunroof - 224k miles
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post #9 of 33 (permalink) Old 02-17-2010, 07:05 PM
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Re: Outlook Gas Mileage - What to do????

I think the most I've ever got in the tank was 21.something and I stopped after the 1st click. The salesman said to turn the gas cap until it clicks 3 times anyone else? He said it may cause the DIC to read something about it not being tight, it's what I do and have'nt any issues so it must work .




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post #10 of 33 (permalink) Old 02-17-2010, 08:12 PM
Tim
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Re: Outlook Gas Mileage - What to do????

Quote:
Originally Posted by 6Sixathome
The salesman said to turn the gas cap until it clicks 3 times anyone else? He said it may cause the DIC to read something about it not being tight, it's what I do and have'nt any issues so it must work .
Never heard of that!

2008 Saturn Outlook XR FWD
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