- #150 of 254
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Re: Mileage [cmoore7]
by sun44
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Jul 27, 2007 (10:46 am)
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Replying to: cmoore7 (Jul 27, 2007 9:00 am)
The problem is to the one that said strange..that's ALL I'm getting. 15-19 mpg city..I guess nobody believes me..reciepts to prove it...what's even sadder, is the company won't do a thing about it. Saying there's nothing wrong with the car. You know how it is, when you're a woman, if you are. They pull the wool over your eyes, and we're not allowed in the bays where they look at them or service them..
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- #151 of 254
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Re: Mileage [sun44]
by poncho167
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Jul 28, 2007 (5:56 am)
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Replying to: sun44 (Jul 27, 2007 10:46 am)
There are certain parameters that a car company follows and unfortunately whether you by a Chevy or a Toyota there is only so much they can do. I have seen this on Japanese forums as well, and there is even a Honda Civic hybrid owner suing Honda because his hybrid only gets 33 mpg, go figure.
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- #152 of 254
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Re: Mileage [sun44]
by ilaveo
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Jul 28, 2007 (6:11 am)
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Replying to: sun44 (Jul 27, 2007 10:46 am)
If you are spending a lot of time idling in stop and go traffic with the A/C on that may be all that you'll get.
Otherwise my best guesses would be that either you have a hanging brake or a bad (temperature?) sensor or computer that is keeping your engine in open loop mode (open loop is the default operating mode your engine uses at start-up before it reaches normal operating conditions where it can compute fuel/timing settings to optimize engine power and economy.) Your mechanic is probably too lazy/busy to actually warm the car up and drive it with a scanner hooked up to see what's actually going on. If he hasn't done that IMHO he hasn't done his job.
I am guessing that you need to find a different mechanic/dealer--one who knows something about cars.
We are getting mid 30's around town and low 40's on the highway out of our Aveo.
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- #153 of 254
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Re: Oil Change and Tire Pressure [nordy200]
by ilaveo
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Jul 28, 2007 (6:31 am)
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Replying to: nordy200 (Jul 20, 2007 4:18 am)
Nordy 200's advice sounds good to me. In terms of tire pressure specs you should also look at the maximum pressure spec on the tire sidewall (often 44 PSI). Generally auto makers give lower pressure specs to use the softer tire to decrease ride harshness and road noise. For better efficiency, performance and tire longevity I would choose the tire makers spec, for a smoother ride with less noise I would opt for the automakers spec.
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- #154 of 254
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Re: Mileage [sun44]
by flaaveo
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Jul 29, 2007 (5:47 am)
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Replying to: sun44 (Jul 27, 2007 10:46 am)
Trust me I belive you! I jump up and down IF I get 18mpg! And I get that only because I use synthetic oil,and I changed the spark plugs to 'Bosch Plus 4's'. With them, and driving VERY carefully..I get 16-19. 19mpg is on a rare week or two of not using the A/C...which does not happen this time of year in south fla. I have taken it into the dealer and they say the computer is working perfectly and there is nothing wrong. It is 'the way you drive...and it is all city driving'...so its MY fault. Most of the people on here dont belive me either. so I stopped complaining about it. I just note when I get 18 or 19 mpg!Thats a big day when I top off and get that mileage.
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- #155 of 254
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Re: Mileage [flaaveo]
by sun44
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Jul 29, 2007 (10:53 am)
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Replying to: flaaveo (Jul 29, 2007 5:47 am)
What's the sad part..is that we as consumers are lead to believe that these cars are GREAT on gas mileage, and we fall for it. Yeah I would say it's out fault for listening to their hogwash. I'll just hold onto it for a couple of years, and off it goes..
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- #156 of 254
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Re: Mileage [ilaveo]
by nordy200
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Jul 30, 2007 (4:14 am)
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Replying to: ilaveo (Jul 28, 2007 6:11 am)
Good advice here-driving only a few miles each way to work will keep the computer in open loop mode and you will never, ever, get mileage anywhere close to what's been advertised for the car. If there was something wrong with the fuel injection system (bad injectors, fuel pressure problems, or a vacuum leak) then the computer would set a code and cause the check engine light to come on. A problem like the hand brake hanging would not set a code but would only make the engine work harder. Of course, tire pressure is also extremely important (low tire pressure in my F-150 reduced mileage 15%-that's huge) and should be set at or a little above the recommended amount. Using the A/C has more effect on mileage with a small engine (my F-150 gets the same mileage whether or not I use the A/C) and driving an automatic can compound these problems as well. If a car had all these situations going on at once, plus a driver who kept the revs up and was driving agressively, then I would not be surprised at all if someone got only 18-19 mpg (or less) in an Aveo. That being said, the Aveo isn't a Honda and it isn't a Toyota and at it's best may not be as efficient as a comparable model from those companies.
I don't mean to criticise or disbeleive our fellow forum members who are reporting these low mileage figures. It's just that with modern OBD-II computer controlled engines these low MPG reports may be (and certainly could be) caused by operating parameters that the computer just isn't designed to control.
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- #157 of 254
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mileage
by randydriver
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Jul 30, 2007 (8:39 pm)
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okey guys..... just took a trip out to east texas from plano...and I used 4.3 gallons to go 162 miles and that was round trip. Not bad.. .... feel really bad for the guy getting such sucky mileage out of his car...I dont know if I have just been lucky of what myself. Did they check the oxygen sensor.... know when that went out on my old metro my mileage went from 36 around town to 22-24 and I just about freaked out.
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- #158 of 254
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Re: mileage [randydriver]
by nordy200
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Jul 31, 2007 (4:10 am)
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Replying to: randydriver (Jul 30, 2007 8:39 pm)
The O2 sensor certainly can cause lower mileage, but in todays OBDII computer controlled cars, it would set a check engine light for out of range voltage on the sensor.
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- #159 of 254
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Re: Mileage [sun44]
by rhonda10
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Aug 02, 2007 (10:56 am)
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Replying to: sun44 (Jul 27, 2007 10:46 am)
I am a woman and have had my car for almost year. After much tracking of mileage I have come to the conclusion that I have consistently been getting about 25 city and about 31 highway, which to me is great considering my 4 cylinder Subaru only gave me 19 city and in the low 20's highway. Now with that I can also say that I do not think that my driving habits are out of the norm and the choice of gasoline manufacturers [76, Arco, Mobil, etc.] that I use varies. For the most part the little car performs pretty much as I expected and to date I love my car. Good luck and I hope your mileage ultimately gets better.
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