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-   -   Average MPG in your Cobalt (https://www.cobaltss.net/forums/fuel-economy-hypermiling-165/average-mpg-your-cobalt-116025/)

kazinova 09-12-2008 04:10 PM


Originally Posted by 07touringcoupe (Post 2874830)
I think i get horrible gas mileage. My DIC said 272 when i filled up. I got to fill up twice a week :thumbsdow. But here is my question. Is it better to drive at high rpms out of boost or low rpms in boost?

Take a wild guess.

07touringcoupe 09-12-2008 04:12 PM


Originally Posted by kazinova (Post 2875199)
Take a wild guess.

didnt ask anybody to be a dick. Im not saying in high boost but like in 5 llbs

kazinova 09-12-2008 04:14 PM

I'm not trying very hard to be a dick on this one. Here's a general rule I've developed in my 23 years on this planet.

Higher RPM w/ Throttle == Higher Fuel Consumption

With very few exceptions, I've found it to be true.

07touringcoupe 09-12-2008 04:27 PM


Originally Posted by kazinova (Post 2875220)
I'm not trying very hard to be a dick on this one. Here's a general rule I've developed in my 23 years on this planet.

Higher RPM w/ Throttle == Higher Fuel Consumption

With very few exceptions, I've found it to be true.

ok let me give you s situation. UNDER NORMAL DRIVING, lets say im in 3rd gear and i come to a hill and corse you gotta use more throttle to get up this hill, now you are at 4k rpms out of boost and if you switch gears to 4th to maintain the same you have to put more throttle putting you in boost at lower rpms. Which is better for fuel economy?

kazinova 09-17-2008 03:52 PM


Originally Posted by 07touringcoupe (Post 2875276)
ok let me give you s situation. UNDER NORMAL DRIVING, lets say im in 3rd gear and i come to a hill and corse you gotta use more throttle to get up this hill, now you are at 4k rpms out of boost and if you switch gears to 4th to maintain the same you have to put more throttle putting you in boost at lower rpms. Which is better for fuel economy?

The honest answer is that it depends, however, going up a high you want to be in a lower gear than you normally would be to be as efficient as possible. You might be boggin or waste energy on turning the motor if you shift up and have to mash the throttle to keep going up the hill.

Although, things may be different in an SC car.

Spanky's Monkey 10-02-2008 09:02 PM

27.8 daily driving....spirited, daily driving
22.3 .....you don't wanna know.

JDMjunkie 10-02-2008 09:04 PM

31.3mpg with my SS/SC :)

Gestapo007 10-02-2008 09:26 PM

I wanna see driver information center averages. Thats whats up

scottyguy401 10-02-2008 09:32 PM

Well I have an auto 2.4, and drive rather spirtedly in the city. I get 22 avg with my avg speed being 25 :lol:

hoffa 10-02-2008 09:32 PM

30ish when it's all said n done.

06SuperSport 10-02-2008 09:46 PM

I'm averaging roughly 25-27.5 city driving. Have yet to see what I average on highway.

WickedSS2005 10-02-2008 10:16 PM

After some fine tuning under normal driving, I get 37mpg on average per my DIC. 38.5mpg by my math skillz

Firebirdhorn 10-02-2008 10:23 PM

31 or 32 mpg on average.

DaveinCoalinga 10-12-2008 09:05 PM

My last 4 tanks averaged with the DIC is 30.3.
2.4 manual trans

stealthy1ss 10-12-2008 09:13 PM

I get about 34-35mpg now that I am tuned and the highest that I have ever got was 40mpg.

Tundraboarder666 10-13-2008 02:31 AM

2.2 auto with a lead foot...
I get 26-28 range most of the time.

mrdan 10-29-2008 11:22 PM

in my 05 2.2 5spd cpe i am normally getting 32-34mpg that is a mix of in town and highway, goofing off too. my personal best is 39.8mpg no goofing off, no wot, in town and highway. i am more than happy with that!

cruisn 10-29-2008 11:26 PM

I average about 33-35mpg in my 2.4 98% percent highway. lol. cruising at 120 for half and 110 for the other half.

I am also heavy on the right foot to get up to speed... so that hurts mine a bit...

HackAbuse 10-29-2008 11:28 PM

0, my engine currently can't move my car. lol.

Frew 02-04-2009 09:35 PM

my dic says im gettin 34 mpg, bullshit, i did the math 10 gallons, 285 miles
ever since i went stage 2 my dic mpg has been off worse did anyone else get that?

Rydis 02-05-2009 07:50 AM

I seem to only be getting 22/23 highway. I usually drive casually shifting around 2200-2500 rpms and keep a steady speed around 80 mph...does this seem norma with 93 octane?

kwest 02-05-2009 08:13 AM


Originally Posted by Frew (Post 3420178)
my dic says im gettin 34 mpg, bullshit, i did the math 10 gallons, 285 miles
ever since i went stage 2 my dic mpg has been off worse did anyone else get that?

yea thats how mine was. its because of the tune. since ive got my 60s installed and the custom tune i get waay better gas mileage since my car was stock, plus the exhaust helps too. I usually get around 30-33mpg. But i dont drive like a bat out of hell, shift at 2k rpms generally.

Gestapo007 02-05-2009 10:31 AM

i have a feeling alot of these high averages arnt "averages" some1 just put there car in cruise control at 40 mph and looked how much they get at 40, the mpg INST or whatever. No way there averages. my 2.2 got 31 mpg average driving from NY to NC. as soon as i got back i reset it and it went down to like 27.5 around town. i just feel like alot of these numbers are exagurated

chevy cobalt 08 02-05-2009 04:28 PM

Why am I the only fool that seems to only get around 18-19 mpg in a 2.4? Or is it that Staten Island really has too much stop and go compared to other cities? I don't get into 5th often either and I drive mostly local 30mph roads. (max 40) Not much of highway at all.

REIGN SS 02-05-2009 05:27 PM


Originally Posted by Frew (Post 3420178)
my dic says im gettin 34 mpg, bullshit, i did the math 10 gallons, 285 miles
ever since i went stage 2 my dic mpg has been off worse did anyone else get that?

How often do you reset it?


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