Dayton, OH to Findlay, OH - 100 miles... I made this trip like 6 times before I left for NC, and I averaged over 45mpg each time. Over 50 on two of them.

If you want, we can bet money on this... and I'll take you for a 400 mile road trip. $1000 says I'll get better than 45mpg.

 

i would like someone to challange me as well....cuz im not full of bs....i could really use 1000 bucks right about now

 

Tell em ay!

 

I have one too....
http://s337.photobucket.com/albums/n...rent=50mpg.flv

......If only that were actual mpg!!!!!!!!!!

Actually finished my drive above 52 mpg about 30 min after I took this. Trip, mpg, and avg spd were reset with full tank in Cumberland, MD and drove 155 miles to Harrisburg, PA then filled up again. DIC mpg showed 52.4 while actual proved to be 34.5mpg, using just under 4.5 gallons. Avg spd was 69 mph btw.

This is what happens to the dic mpg calculation when larger than stock injectors are installed! Most arent gonna be this skewed, as this representation is of 60lb/hr in place of the stock 24lb'ers on a 2.4, but you should get the idea.

 

i got 41 on a fully bolted on and tuned 2.4 on the way back from indiana on a 700 mile trip..and 37 mpg on the way there.. i just drove and devided by the number of miles

on the way out there i got like 450+ miles on a tank and i had 12.5 used

on the way back i had like 350 miles and i still had a bit over 1/4 of a tank left.. filled it up and it was like 8.6 gallons going 70 or so both ways on the way back my brother got 42 mpg in his 01 sc2 and i got like 40.9..

 

If your cobalt gets above 43 mpg then how come GM has not reached those numbers for highway MPG? I mean shoot, they sure as hell wouldn't be in the situation they are now if the cobalt got 7 mpg better than they claim. Gm would kill to get 1 mpg better on the model let alone 7 mpg greater. I am sorry to say but it is not true to obtain 43 mpg or higher cruising even in fifth at 55 mph.

 

Big words from a guy thats failed to dyno higher than me...........

Anyways on a recent trip my DIC said 42.5 but by manual calculation it only came out to 34.8, 383.6 Miles on the tank before the low fuel lights started singing to me

 

I'm fine with ~40 highway and a blower.

 

Wow i get 25

 

i drove from Halifax, Nova Scotia to Edmonton Alberta (5576kms) and i got to 6.7L/100kms. I use 91 Octane plus my meth kit.

 

On long highway trips I average right around 38MPG going 75-80mph.

 

When you get stuck behind inconsiderate people going 10 miles an hour under the speed limit to save themseves gas...because they don't have enough sense to realize they are causing wasted fuel behind them when everyone else driving legally has to slow down for them...go around them safely and go 20 miles an hour under the speed limit in front of them to "help" them "save" even more. Maybe then they'll get the message...being considerate of others.

 

I have a route that I can achieve 52mpg on

but only one way

go the other direction and it see's around 12

 

So he/she can remove the side-view mirrors to reduce the Cd. Another trick to reduce drag is to use pizza pans as wheel covers. You gotta admire these guys for their ingenuity.

 

To all the people claiming 45+, are you going by the DIC or are you using the amount of miles driven/ gallons used?

Highest I ever gotten was around 35 or so on the highway.

 

Ahem... Wonder how that happened

How's she doin btw?

You sir, have not had a great tune then

Because GM would have to custom tune each and every single car. A generic daily tune for all 50 states will not react the same as a custom tune

Uh, have you broken 300 yet? Cuz w/ less mods I had 318whp and 282wtq. Same dyno that I only made 258whp on my 2.6 pulley...

 

qft. i'm at the same lol

 

If you folks REALLY want to get your TRUE MPG than go to fuelly.com and track it. Than come back and see if you're truly getting the MPG the computer claims your getting

 

this is interesting since mine only gets ~22-25 2.2 with a catback and cai

 

wtf...thats all too high. True drivers go 10-15 mph over the limit and get 28mpg. Why come no other car gets 50 but your two cobalts can? Vibe/matrix/corollas are barely getting low 40's barely. my bosses old escort gets 41. you two getting 50? seriously? bologna

 

time for mythbusters

 

i only get about 30-35 mpg in my T/C

 

i get 36mpg (hwy) in my 09 2.2

 

the first tank of gas in the LSJ i had went well past 400 miles.. 12.5 gallon tank.. had a few tank's that got allmost 500 miles and then was only able to put 10 gallon's in.. 07 IRL and even stage 2 i was able to get that kinda mileage aslong as i kept my foot out it..

 

Even with a few 2nd thru 4th gear pulls, my 2.6 setup w/ 79's got an average 38mpg on my return trip from Indianapolis this weekend. And my fuel trims are still a tad bit off since the new injectors