BAD Mileage

I took a trip that was 160 miles and got only 25 MPG on the HIGHWAY! I filled it up all the way then refilled after the trip and divided everything up. (I actually had my boyfriend do it for me, heh, and hes competent when it comes to that kind of thing.) I believe that is what I got because it took me an awful lot of gas to get there and I didn't think that was quite right. I like everything else about the car, except the mileage! The main reason I bought it was because it was so small and the sticker boasted great mileage! I feel so cheated and angry. It is a new car with only about 2500 miles on it but still it shouldnt be THAT bad! right?

Also, It is a stick shift. Now, DO NOT ask me if it was in 3rd instead of 5th. If it was in 3rd, I would have known because I was going 65 MPH and it was revving between 2.5 and 3. And 160 miles going 65 MPH in 3rd gear wouold have made my engine break apart, so I know I was in the right gear.

AND - I NEVER rev my engine. I am SUCH a crazy person when it comes to gasoline and I never let it rev above 2.5 when I am driving, I downshift when I am coming to stops and I don't do crazy stunts or anything. I try the best I can at ALL times to use the least amount of gas as possible.

BUT it is a new car... it only has about 2500 miles on it, but still someone told me I should have gotten at least 30 MPG, not 25.

Anyways I am so effing mad about it! I am nothing less than livid. If I knew the mileage would be like this I NEVER EVER would have bought this damn car. NEVER.

unfortunatly that is one of the downfalls of this great little vehicle. If it wasn't for that tiny defect, and well the absense of a standard arm rest, I'd have no complaints.
Since I've started tracking in july 06 this is what i've gotten on my 2006 LT, automatic hatchback
To have an average mileage of 22.8 on 50/50 hwy/city is pretty pathetic i think.


http://i22.photobucket.com/albums/b314/iplaymyguitar/aveompg11607.jpg

WOW. Well thanks for posting that. Maybe I will document mine more carefully too. I am urging people to post their mileage on http://www.fueleconomy.gov/

To go directly to the Aveo one, go here http://www.fueleconomy.gov/feg/byclass.htm
To post your mileage, you have to become a member, so go here http://www.fueleconomy.gov/mpg/MPG.do

Thanks for your reply :-/ just confirms the horrid news that this car gets shitty mileage for its size... so much for four cylinders.

Was getting 25mpg in the hatchback with automatic right after I bought the car. Thought that was being pretty thirsty for such a small car. Two intake valves instead of one are great for power but not that good for fuel. As your engine breaks in and gets more loose it will get better mileage. I switched to 5/30 synethetic oil and put 40 psi. in the tires and am now getting 35 mpg. Makes a little more road noise this way, but I'll accept that for the extra mileage. I believe the horsepower on mine is 107. I have a Ford Escort rated at 110 HP and it gets 40 mpg. Still the Aveo will outrun the Escort any day of the week. After you get a few more miles on it you will see better mileage.
The Aveo will outrun the Escort any day of the week even though the Escort is a 2.0 L and the Aveo is a 1.6 L.

my car has 10k on it.... well past the 5k break in period.

I have never once gotten over 29mpg.

You say the only changes you did were synthetic oil and 40 psi in the tires and your getting 15 more mpg?

just wondering what psi are the tires supposed to be at, and is it dangerous to over inflate them.

I started out getting 25 mpg when the car was new. I switched to the oil and more tire pressure and am getting 10 more mpg. I think the sticker on the door says 32psi, but the maximum load rating on the sidewall of the tire says 40 psi. So I went with that. Hey! Its a fast little car. 16 valves make it go like a banshee.

if what you are saying is true, Dave, you are my hero. I should send you some money via paypal for your automotive assistance. So can I request that special oil at the oil changer place??? And if I tell them how much to inflate my tires, will they do it??? Thanks!

I am haviing the same gas mileage problems as you.Top mileage has been
about 29 highway.My car is a 2006 special value model 1.6,5 spd.On the highway the tach reads 3600 rpm @75.Brought car in this morning and asked service rep about it.He said i should be getting about 36,but its cold and that could be a factor.I doubt it, but who knows.

yeah it revs so high. I was just about 3 RPM at 65 mph. I know this little car has power and is peppy but I would rather have the mileage and power in the amount of gas... a lower amount that is. BTW everytime i tell someone about this they ask me if i was maybe in 3rd gear by accident. HELL NO I am not an idiot of course not. what a dumb question.

Just got the car out of the shop.Service tech could find nothing wrong with
the engine or the vehicle that would cause the lousy gas mileage.I suspect its
because the engine revs so high its using more fuel to maintain highway speeds.Bottom line is the transmission needs lower overdrive gears to lower
highway rpms to around 1800-2200 to improve gas economy.oh well.

I am haviing the same gas mileage problems as you.Top mileage has been
about 29 highway.My car is a 2006 special value model 1.6,5 spd.On the highway the tach reads 3600 rpm @75.Brought car in this morning and asked service rep about it.He said i should be getting about 36,but its cold and that could be a factor.I doubt it, but who knows.

correct me if am wrong but isnt the cold air suppose to give better gas mileage because when it enters the motor it is much more dense and when the spark ignites the fuel/air mixture the cold air makes for a stronger explosion inside the cylynder. hence the reason for the development of cold air intakes. please someone tell me if im wrong. i do agree with you on the transmission factor tho. the gearing in these cars could be done up a lil better, but you have to understand when you are doing 75 mph on the hwy you are not gonna get the best gas mileage anyways. you get the best gas mileage on the hwy at 55 mph and that is how everycar is rated. so when you see the rating on a window sticker of the mpg you have to remember that it is usually only around 55 mph that you will see these results.

correct me if am wrong but isnt the cold air suppose to give better gas mileage because when it enters the motor it is much more dense and when the spark ignites the fuel/air mixture the cold air makes for a stronger explosion inside the cylynder. hence the reason for the development of cold air intakes. please someone tell me if im wrong. i do agree with you on the transmission factor tho. the gearing in these cars could be done up a lil better, but you have to understand when you are doing 75 mph on the hwy you are not gonna get the best gas mileage anyways. you get the best gas mileage on the hwy at 55 mph and that is how everycar is rated. so when you see the rating on a window sticker of the mpg you have to remember that it is usually only around 55 mph that you will see these results.

I'm no expert, but FWIW...

In general I believe the thought that the air needs to be cooler is "relative". That is, you don't want non-intercooled super or turbo charged high temperature air being pushed down into the chambers (it's just way too hot), but I don't think that you want really cool (like ambient in the winter, sub 50* or so) air being pulled in either. I think that'll just convince the computer to run the vehicle rich. I think that's why coolant is plumbed through the base of most throttle bodies too; sort of like the choke on carbureted vehicles. It's an attempt to keep too cool air from coming in. A CAI is supposed to be drawing in ambient temp, versus under the hood, hot, engine compartment air. Actually most of the intakes now-a-days pull air from the fender-well area so they're essentilly CAI from the factory. They're just typically more restrictive (sometimes to reduce noise heard from the passenger compartment) than aftermarket CAI in both piping and filter element.

Also, depending where you are geographically, you may be having cold weather additives (http://findarticles.com/p/articles/mi_qn4208/is_19950225/ai_n10186690)being added to your fuel that may reduce MPG.

Just some thoughts.

i get consistantly crappy mileage, year round. With or withou hwy or city and with or wihout letting the car warm up. There is a problem with some of the vehicles that gm simply refused to acknowledge or fix. If this was the sort of thing you could do a class action law suite for i'd be the first 1 signing up for it. I feel lied to, and quit honestly they're come just short of telling me i don't know how my car works and that i'm imaging the bad mileage, both gm and my local dealer. I've been very dissapointed with their upfront denial of any problem. I belong to most of the message board about the aveo, and have seen the same complaint time and time again. There are some people who are getting 40+ mpg, while the rest of us suffer with 18-22mpg... its crappy thing they're doing to us.

i made an online petition about the mileage. Please sign if you are disapointed with your aveo's MPG

http://www.petitiononline.com/aveompg/petition.html

I fully agree that most cars are desighned for 55 mph.But doing 55 on any major highway is just plain dangerous.Most newer cars are desighned for commuting duties at over 65-75 mph,and achieve excellant gas mileage.You
are right that the cold air is good,for performance.Gas mileage will suffer a little but not this drastic.i have owned this car since August and the mileage
has been bad since day 1.

I fully agree that most cars are desighned for 55 mph.But doing 55 on any major highway is just plain dangerous.Most newer cars are desighned for commuting duties at over 65-75 mph,and achieve excellant gas mileage.You are right that the cold air is good,for performance.Gas mileage will suffer a little but not this drastic.i have owned this car since August and the mileage
has been bad since day 1.

I'm not sure what you're trying to say here: "most cars are desighned for 55 mph" and "Most newer cars are desighned for commuting duties at over 65-75 mph".

I would agree that most modern cars can be safely driven on good roads at 65MPH, 75MPH, or higher. I would also agree that 55MPH is problematic if not dangerous on today's highways. I travel the posted 60MPH speed limit on my local section of interstate and I almost never pass anyone. The only problems I really have are when people are weaving in and out and passing center lane people on the right and they end up cutting me off or when they decide to pass me on the right shoulder. If people would obey the limit (a better possibility if law enforcement would actually enforce the law :rolleyes: ), the country would consume A LOT LESS oil and the roads would be a lot safer. I think I've read that on average, you'll lose .1 - .2 MPG for every 1MPH greater that 55MPH you travel. Anyway, I'll step off of my soapbox now.

Maybe you were trying to say that EPA estimates are set under somewhat atypical conditions. I believe the speed they use is 45MPH to 55MPH and is usually under ideal conditions. That's supposed to be changing; they're supposed to quote new estimates that reflect common driving practices more closely.

FWIW, with my 60MPH highway speed, I get very close to (occassionally higher than) the estimated 27MPG for my truck (http://mysite.verizon.net/jerryp58/id11.html)(my daughter has the Aveo).

i get roughly 30 mpg and thats with a ram air intake. i say roughly because i havent checked it in a while. and i feel bad for yall because i should be gettin the worst mileage here. there is definetly sumtin wrong with some of these lil cars. i guess all yall can do is just keep lodging complaints to gm. after all if you keep bringing in your car (to the dealership) for the same problem, they have to at some point break and say, "hey we got a problem" and fix it.

Any chance one (or more) of you with really poor mileage from "day one" could convince your dealership to swap out the ECU with a new one?

Any chance one (or more) of you with really poor mileage from "day one" could convince your dealership to swap out the ECU with a new one?

ive mentioned that... said they can't if there are no codes for it... basically they don't want to do warranty repairs cause they get paid less for them.

i get consistantly crappy mileage, year round. With or withou hwy or city and with or wihout letting the car warm up. There is a problem with some of the vehicles that gm simply refused to acknowledge or fix. If this was the sort of thing you could do a class action law suite for i'd be the first 1 signing up for it. I feel lied to, and quit honestly they're come just short of telling me i don't know how my car works and that i'm imaging the bad mileage, both gm and my local dealer. I've been very dissapointed with their upfront denial of any problem. I belong to most of the message board about the aveo, and have seen the same complaint time and time again. There are some people who are getting 40+ mpg, while the rest of us suffer with 18-22mpg... its crappy thing they're doing to us.

I know what you are saying. My dad is an electrician at Delphi automotive in Rochester NY so we got the employee discount (6% -- which didnt cover the 8% tax in NYS) That is the only reason I went with an American car. He is so pro-American and I love my dad to pieces but this is exactly why people want the Toyota YARIS!!! I want it anyways haha I really wanted an Echo but whatever...I also feel very lied to and it doesnt make a bit of sense to me.

BUT -- read this -- I checked my air pressure in my tires... it was 24 PSI. OOPS because the tires say it should be 44. So my boyfriend says my mileage should be a hell of a lot better now. I HOPE SO! So everyone, check your air pressure in your tires, and see what the recommended amount is...

i made an online petition about the mileage. Please sign if you are disapointed with your aveo's MPG

http://www.petitiononline.com/aveompg/petition.html

I signed this and I strongly urge everyone else to sign it as well. Whya re there only four people?! we need to promote this more!

Hey, I believe that bad mileage is a problem for most of us. I experience it too on my 2004 Aveo M/T LT.

What I usually do is not driving more than 2500 RPM. I usually limit myself on shifting on that rate of RPM. But don't up-shift before reaching 1800RPM, cuz if you do and you push on the next gear, you won't get any power, all you'll get is a waste of gasoline. Don't think that you'll save gas on low RPM, you have to know your speed and know how you're stepping on the gas pedal. Cus the pressure you put on the gas pedal is not always equal with the RPM (if you do engine breaking for instance).
Shifting on 2200RPM is best, and shift down when if you're slowing and reaching 1700RPM.

I agree about the tyre pressure. Yup, it sayz 32psi on the dash, 40psi on my tyres, well I usually put 35psi to 37psi on it. It can save a few miles for a gallon. And bout that cold air thingy, yes it's a good solution, but I think it's kinda complicated if you're suggesting that for a female owner. But for for a guy like me and all of you boys owning an Aveo, it's not a hard thing to do. It can save your pocket money. You can buy stuff for your girlfriend instead of spending it for gas. Don't you agree?

Drive safely guyz!

Hey, I believe that bad mileage is a problem for most of us. I experience it too on my 2004 Aveo M/T LT.

What I usually do is not driving more than 2500 RPM. I usually limit myself on shifting on that rate of RPM. But don't up-shift before reaching 1800RPM, cuz if you do and you push on the next gear, you won't get any power, all you'll get is a waste of gasoline. Don't think that you'll save gas on low RPM, you have to know your speed and know how you're stepping on the gas pedal. Cus the pressure you put on the gas pedal is not always equal with the RPM (if you do engine breaking for instance).
Shifting on 2200RPM is best, and shift down when if you're slowing and reaching 1700RPM.

I agree about the tyre pressure. Yup, it sayz 32psi on the dash, 40psi on my tyres, well I usually put 35psi to 37psi on it. It can save a few miles for a gallon. And bout that cold air thingy, yes it's a good solution, but I think it's kinda complicated if you're suggesting that for a female owner. But for for a guy like me and all of you boys owning an Aveo, it's not a hard thing to do. It can save your pocket money. You can buy stuff for your girlfriend instead of spending it for gas. Don't you agree?

Drive safely guyz!


Hmm more good advice... i thought the lower the RPM, the better the mileage!!! Whenever id hear my car rev over 2 RPM i would shift up... hmm well i plan on looking into this further... thanks!!! and if you know any good sites that explain how to upshift and downshift for the best gas mileage please let me know. THANKS :-)

Someone told me that downshifint gives you better gas mileage... is that true?? I can't find any good websites about it... the only websites I can find are saying that it is a waste of time and bad for your clutch. Is that because of the way the car bucks a little bit (more depdning on the speed). The bucking thing IS bad for the car, right? Break pads are cheap and I was never really worried about my break pads anyway, I was just downshifitng for the gas mileage but if I am wasting my time, I totally loved just popping it i nto neutral and coasting it out... someone please help me here because I cant find an answer on the internet! Screw Google...

Hmm more good advice... i thought the lower the RPM, the better the mileage!!! Whenever id hear my car rev over 2 RPM i would shift up... hmm well i plan on looking into this further... thanks!!! and if you know any good sites that explain how to upshift and downshift for the best gas mileage please let me know. THANKS :-)

a web site really wont help you much. all it is just getting a real good feel for the car. eventually you will get to a point where you dont need your tach or even your speedometer because you will just automatically know where you are at when in what gear and by how loud the motor is. its alljust feelin out the car. thats what is great about stick. does anyone else who lives in cold environments notice that when its real cold and you first start your car ad go it feels like your movin the stickthrough tar? i hate that onmine. i owned a nissan maxima and mustang gt that were bothstick shift and they never felt likethat in th cold. it sux and mkes forreal slow shifts for bout 10 minutes. bucking aint real badfor the car. its just the how the motor is transfering energy and motion through the car. the only time its real bad is when you have a rwd and alot of power and you do a wheelie and come down and bottom out. but thn you dont care cus your proud of your car.

The tips I gave you was all from me and from me and my friends' experience, but if you wanna see more, here are some sites that might be useful:

http://www.tips-to-save-gas.com/

http://frugalliving.about.com/cs/savinggas/a/savegas.htm

http://www.safepic.com/savemoneyongas/index.html

http://auto.howstuffworks.com/how-to-drive-economically5.htm


By the way, yes, knowing your vehicle better could make you know how to save gas a lot more, but I think speedometers and tachometers are still very useful especially on quiet engine where you can't really hear your engine. I'm just wondering why chevy/daewoo doesn't give a fuel consuption indicator like the ones in the BMW? Hehe, it can be quite useful I think.

another nice thing would be for someone to make a light weight underdrive pully. make it easier to deliver power to the wheels, thus savin a lil gas and givin it some pep. if anyone finds one let me know via e-mail or this site. ive been lookin but have had no success.

2004 SVM

Total miles 25,809 Total Gallons 717.89 Average MPG 35.95

Date Total Miles Trip Miles Gallons Trip MPG
09/09/2005 14338 379 9.925 38.2
09/13/2005 14677 338 9.148 36.9
09/20/2005 15066 389 10.395 37.4
09/24/2005 15425 359 9.409 38.2
09/30/2005 15720 295 8.446 34.9
10/03/2005 16001 281 8.034 35.0
10/10/2005 16372 372 9.966 37.3
10/18/2005 16694 321 8.825 36.4
10/24/2005 17039 345 9.489 36.4
10/30/2005 17393 353 10.130 34.8
11/03/2005 17680 287 7.895 36.4
11/08/2005 18021 341 9.303 36.7
11/22/2005 19000 329 9.836 33.4
11/29/2005 19335 335 10.055 33.3
12/06/2005 19640 306 8.882 34.5
12/08/2005 19937 296 9.371 31.6
12/14/2005 20230 293 9.276 31.6
01/03/2006 20549 319 9.607 33.2
01/06/2006 20876 327 9.564 34.2
01/13/2006 21179 302 9.266 32.6
01/19/2006 21417 238 7.176 33.2
01/22/2006 21608 191 5.453 35.0
01/23/2006 21842 234 6.689 35.0
01/26/2006 22148 307 9.449 32.5
02/02/2006 22452 304 8.486 35.8
02/06/2006 22694 242 7.197 33.6
02/10/2006 23006 313 9.639 32.5
02/28/2006 23261 254 7.633 33.3
03/03/2006 23577 316 9.435 33.5
03/09/2006 23886 309 9.348 33.1
03/14/2006 24157 271 8.078 33.5
03/19/2006 24463 306 8.969 34.1
03/23/2006 24776 313 9.323 33.6
03/29/2006 25048 272 7.545 36.1
04/05/2006 25368 320 9.300 34.4
04/11/2006 25642 274 7.351 37.3
04/13/2006 25766 123 3.306 37.2
04/16/2006 26125 360 9.699 37.1
04/27/2006 26487 361 9.234 39.1
05/02/2006 26753 267 6.925 38.6
05/08/2006 27055 302 8.026 37.6
05/11/2006 27350 294 7.045 41.7
05/12/2006 27477 127 3.451 36.8
05/13/2006 27800 324 9.364 34.6
05/15/2006 28130 330 9.051 36.5
05/23/2006 28483 352 9.109 38.6
05/31/2006 28836 353 9.531 37.0
06/07/2006 29171 335 8.539 39.2
06/13/2006 29407 237 6.063 39.1
06/15/2006 29641 237 6.201 38.2
06/25/2006 30019 375 9.693 38.7
07/10/2006 30386 367 9.468 38.8
07/17/2006 30753 290 8.197 35.4
07/24/2006 31043 367 8.903 41.2
07/27/2006 31234 192 5.031 38.2
08/03/2006 31573 339 8.520 39.8
08/10/2006 31832 260 6.634 39.2
08/11/2006 31959 126 3.445 36.6
08/11/2006 32161 203 5.364 37.8
08/13/2006 32393 232 6.033 38.5
08/15/2006 32665 272 7.007 38.8
08/21/2006 32981 317 8.583 36.9
08/29/2006 33369 387 10.208 37.9
09/05/2006 33632 263 6.835 38.5
09/14/2006 34175 198 5.586 35.4
09/19/2006 34420 245 6.572 37.3
09/25/2006 34741 321 8.612 37.3
10/02/2006 35051 310 8.233 37.7
10/09/2006 35431 380 9.730 39.1
10/13/2006 35703 272 7.645 35.6
10/15/2006 36039 336 9.189 36.6
10/16/2006 36355 316 9.258 34.1
10/19/2006 36676 321 8.782 36.6
10/25/2006 36909 233 6.800 34.3
11/02/2006 37213 303 8.505 35.6
11/07/2006 37429 216 6.139 35.2
11/10/2006 37735 306 8.407 36.4
11/21/2006 38028 292 8.099 36.1
11/28/2006 38250 222 6.328 35.1
12/04/2006 38542 292 7.870 37.1
12/11/2006 38862 319 9.653 33.0
12/19/2006 39166 304 8.265 36.8
01/02/2007 39402 237 6.445 36.8
01/05/2007 39691 289 8.035 36.0
01/12/2007 39958 267 8.269 32.3
01/14/2007 40232 274 8.011 34.2
01/20/2007 40491 259 7.882 32.9
01/25/2007 40764 274 8.216 33.3

2004 SVM

Total miles 25,809 Total Gallons 717.89 Average MPG 35.95

Date Total Miles Trip Miles Gallons Trip MPG
09/09/2005 14338 379 9.925 38.2
09/13/2005 14677 338 9.148 36.9
09/20/2005 15066 389 10.395 37.4
09/24/2005 15425 359 9.409 38.2
09/30/2005 15720 295 8.446 34.9
10/03/2005 16001 281 8.034 35.0
10/10/2005 16372 372 9.966 37.3
10/18/2005 16694 321 8.825 36.4
10/24/2005 17039 345 9.489 36.4
10/30/2005 17393 353 10.130 34.8
11/03/2005 17680 287 7.895 36.4
11/08/2005 18021 341 9.303 36.7
11/22/2005 19000 329 9.836 33.4
11/29/2005 19335 335 10.055 33.3
12/06/2005 19640 306 8.882 34.5
12/08/2005 19937 296 9.371 31.6
12/14/2005 20230 293 9.276 31.6
01/03/2006 20549 319 9.607 33.2
01/06/2006 20876 327 9.564 34.2
01/13/2006 21179 302 9.266 32.6
01/19/2006 21417 238 7.176 33.2
01/22/2006 21608 191 5.453 35.0
01/23/2006 21842 234 6.689 35.0
01/26/2006 22148 307 9.449 32.5
02/02/2006 22452 304 8.486 35.8
02/06/2006 22694 242 7.197 33.6
02/10/2006 23006 313 9.639 32.5
02/28/2006 23261 254 7.633 33.3
03/03/2006 23577 316 9.435 33.5
03/09/2006 23886 309 9.348 33.1
03/14/2006 24157 271 8.078 33.5
03/19/2006 24463 306 8.969 34.1
03/23/2006 24776 313 9.323 33.6
03/29/2006 25048 272 7.545 36.1
04/05/2006 25368 320 9.300 34.4
04/11/2006 25642 274 7.351 37.3
04/13/2006 25766 123 3.306 37.2
04/16/2006 26125 360 9.699 37.1
04/27/2006 26487 361 9.234 39.1
05/02/2006 26753 267 6.925 38.6
05/08/2006 27055 302 8.026 37.6
05/11/2006 27350 294 7.045 41.7
05/12/2006 27477 127 3.451 36.8
05/13/2006 27800 324 9.364 34.6
05/15/2006 28130 330 9.051 36.5
05/23/2006 28483 352 9.109 38.6
05/31/2006 28836 353 9.531 37.0
06/07/2006 29171 335 8.539 39.2
06/13/2006 29407 237 6.063 39.1
06/15/2006 29641 237 6.201 38.2
06/25/2006 30019 375 9.693 38.7
07/10/2006 30386 367 9.468 38.8
07/17/2006 30753 290 8.197 35.4
07/24/2006 31043 367 8.903 41.2
07/27/2006 31234 192 5.031 38.2
08/03/2006 31573 339 8.520 39.8
08/10/2006 31832 260 6.634 39.2
08/11/2006 31959 126 3.445 36.6
08/11/2006 32161 203 5.364 37.8
08/13/2006 32393 232 6.033 38.5
08/15/2006 32665 272 7.007 38.8
08/21/2006 32981 317 8.583 36.9
08/29/2006 33369 387 10.208 37.9
09/05/2006 33632 263 6.835 38.5
09/14/2006 34175 198 5.586 35.4
09/19/2006 34420 245 6.572 37.3
09/25/2006 34741 321 8.612 37.3
10/02/2006 35051 310 8.233 37.7
10/09/2006 35431 380 9.730 39.1
10/13/2006 35703 272 7.645 35.6
10/15/2006 36039 336 9.189 36.6
10/16/2006 36355 316 9.258 34.1
10/19/2006 36676 321 8.782 36.6
10/25/2006 36909 233 6.800 34.3
11/02/2006 37213 303 8.505 35.6
11/07/2006 37429 216 6.139 35.2
11/10/2006 37735 306 8.407 36.4
11/21/2006 38028 292 8.099 36.1
11/28/2006 38250 222 6.328 35.1
12/04/2006 38542 292 7.870 37.1
12/11/2006 38862 319 9.653 33.0
12/19/2006 39166 304 8.265 36.8
01/02/2007 39402 237 6.445 36.8
01/05/2007 39691 289 8.035 36.0
01/12/2007 39958 267 8.269 32.3
01/14/2007 40232 274 8.011 34.2
01/20/2007 40491 259 7.882 32.9
01/25/2007 40764 274 8.216 33.3

Um wow. Impressive! Very impressive. So what is your secret?? :-D

Don't have a secret. I drive moderately. Keep it between 70 and 75 on the highway, usually closer to 70. I don't accelerate hard from a stop...and people hate me for it. I use synthetic oil but I don't think that has much to do with it. There are a few occasions during a week where I will push it to 4-5k rpm but not often. Normally I shift between 2500 and 3000 rpm. Most of my driving is highway. When my car was new I was only getting 25 mpg (same driving habits). Unfortunately I lost that part of my log when the window was left open in a rain storm. If I remember correctly I wasn't getting good mileage until close to 10k miles.

Don't have a secret. I drive moderately. Keep it between 70 and 75 on the highway, usually closer to 70. I don't accelerate hard from a stop...and people hate me for it. I use synthetic oil but I don't think that has much to do with it. There are a few occasions during a week where I will push it to 4-5k rpm but not often. Normally I shift between 2500 and 3000 rpm. Most of my driving is highway. When my car was new I was only getting 25 mpg (same driving habits). Unfortunately I lost that part of my log when the window was left open in a rain storm. If I remember correctly I wasn't getting good mileage until close to 10k miles.

10000 miles is about right tho before you start seein your mileage goin up. i find it so hard not to get on the gas pedal tho whenever at a stoplight or wahtever. i just wanna go go go as fast as i can you know and if i dont i have everyone ridin my ass cus its slow to get up to speed. has anyone repiped their aveo? im getting a high flow muffler very soon and i was wonderin if its worth it to get it repiped. i hear two different sides when it comes to it. some say (in reference to 4 cylynders) to let the exhaust flow as freely as possible and some say you need to keep the backpressure. if anyone has have you noticed any gains and if so what size pipe you use? hit me back.

wow. that sucks. oh well i guess i will just have to wait it out. my car is approaching 2500 miles...

I am just over 10k, and haven't seen any increase in mileage... only increase i've had is that i get about 3mpg better in the winter.

I have been watching this thread for a while now and I figure I would put in my 2 cents. I recently purchased a 2007 Aveo LS Sedan in early January of this year. I got lucky and found the exact car I wanted (red w/neutral cloth, automatic, cruise, cd, keyless entry w/manual windows). I had been driving a 1994 Suzuki Sidekick, which yielded 22mpg city, 26-28 highway if lucky. Respectable mileage for a vehicle of its nature, but with its age came higher maintenance and I decided to take a plunge for the new car again. I owned a 2004 model base Aveo in 2004, I bought the 1st off the lot and loved it, so this car was purchased with a preconceived notion of what to expect. I got 26mpg in city, 32mpg highway off the lot in the 04. That later topped out at 30 city and 32-35 hwy. The 2007 model that I have recently purchased has bottomed out at 17mpg city and 23 hwy. The highest city mileage I have achieved was 23mpg and the highest hwy was 28mpg. I AVERAGE 20.8mpg in a four cylinder. That's the bottom line, I've had it back to the dealer twice, the first time for a whining noise from the drivers wheel well and the 2nd for the mileage.

I don't drive hard, but I do drive a lot. In town is usually 35-45mph and on the freeway it's 65-70mph. The car spends most of its time under 2500rpm and even at 70mph on the freeway the tach sits on 2800rpm (250rpm less than the 5-speed). The car also runs very well, and has a lot of power (relatively speaking). Nothing seems abnormal, aside from the mileage. Dealer says that there isn't anything abnormal going on with the FI system, and that there isn't really anything that they can do until the 1st oil change. I currently have 2100 miles on the car. Something here seems seriously wrong, but for now I'll entertain that 1st oil change.

-T.

So far on my 2007 Aveo5 SVM I am getting 22mpg in the city where almost all my driving takes place. I think this is a reasonable number since a fair amount of that city driving is stop and go. All my trips are 5 miles or less for the past couple of months so in the cold weather by the time the engine is warmed up I am where I am going. Also, it is winter here and the roads are sometimes snowy and icy so traction is poor which means that mpg is going down. As I write this I have 1,599 miles on the car. In time, as the engine breaks in I expect the gas mileage to improve.

I did my first oil change three weeks ago and used Castrol GTX 5W-30. The car seems to warm up a little faster now. Also, I checked the air pressure of the tires and put it up to 31 for the front tires and 30 for the rear tires. They had gone down to 26 and 25 respectively.