What's your computer display mileage reading?

Mine milage in a 2006 SS Sedan with 200 miles on it has been getting between 12.9 and 13.1L/100km (21.6 to 21.8MPG). I have not been driving it that hard at all?

 

I get around 23 or so. I only drive on the highway when I'm driving to and from work. That's like 3 days a week...for a total of about 15 minutes. Otherwise, it's all around town, to school and the like. I haven't really driven it super hard yet. But using the 91+ (I use 93) I'm sure would give you the best results. I'll get the actual number for you tomorrow. However, I am auto btw. So it tries to kick down more than I would with a stick. When I had my Accord, I'd always let it rev drop.

 

I average around 11.9 L/ 100 kms in mine only get about 420 kms to a tank of 91 octane that is mostly around town, mileage is not as good as i expected, but the car has a fairly small gas tank compared to my old cavalier

 

I can get around 30 to 37 MPG for the Colbatl SS/SC. I think you guys can do better. This is all freeway driving thought. Right know I got 350 miles out of one tank and have gotten 392 miles at one time. It is all about how you drive the car and differenct between city and hyway.

 

My daily drive is about 15 miles stop-and-go in traffic, never above 55mph. I'm getting between 22 & 23MPG with my intake installed.

Before I put it on I was getting 24 - 25. *shrugs*

 

I run around 26-30 MPG and most of that is hard driving. it has dropped since I got my intake put in, but that is due to my driving.

 

Mine's still under 1000 miles...so it's probably still sorta breaking in...

 

from day one have gotten 9.5L per 100kms as an average on each tank. Have gotten down to 7.7L but thats on some serious ling distance highway driving. As soon as I hit city traffic--up she went.


Thats 29 US mpg (33 CDN) 5400kms on it. Maybe another 5,000 to get fully broken in?

 

1300 Miles
26.4 MPG

 

reset the fuel mileage today on the way to work on the Deerfoot. Got her down to 7.0L per 100km

 

800 Miles 28.6MPG and climbing w/ cheapest 87 octane available. (5-speed)

 

no to clutter the SS/NA milage but for referecne ...I am at 9.1L/100km in the City and 8.4L/100km highway .. a friend of mine has a 2.2L Coupe and I get better milage than her (hers is auto 11.3L/100km city)

for compairing milage it should be noted if it is Auto and if it is Sedan or coupe (if not in sig)

 

Wish I had the aerodynamic benefit of your Cobalt's with my 2.4L VVT ECOTEC. I average 21mpg city and 27mpg highway and that's when I drive like a grandma. Only 1500 miles so far though so there's still more room for the engine to get better over time.

 

I just broke 1000 miles and it reads 23.6. I drive kinda hard, but not that hard. It better start going up, there is no way the SC should be getting better mpg then us. According to the paper in the window when I bought it should be between 26-34 and I havn't seen anything next to that yet. And yes I know it is still breaking in. I just want it now, now, NOW!!!

 

i have a manual, and i know that if im having a crappy day of shifting, my milage is a whole lot lower

 

I have about 500 miles and have been seeing 26.5mpg consistently in mixed driving (mostly highway). Will it go up once the car is broken in? If so, how many miles, typically before it is broken in (3000 miles?)

 

Fuel economy will increase once the motor is broke in, but it's a very insignificant number you wouldn't even notice.

 

3400 miles. Average about 35mpg i believe. I always get a little over 300 miles per tank before I have to fill up again

 

Hrm, mine has 284 miles and I get roughly 26 mpg to 29.6 mpg. I was getting close to 34 the day I got it, but since then I haven't. I haven't really pushed it hard though, I think my top speed on it has been maybe 54?

 

Sorry to hijack, but do you need to run 91+ in the 2.4, or can you run 87 or 89? What is the window sticker mileage for the 2.4?

 

sure you can put 87 or 89. The computer will dial back the timing and you will lose a few hp.

 

Window sticker mileage is always a lie.... the testing method that is used to determine mileage gives results that are off by 10% at the barest minimum.

And some FYI for Deaf Dog.... 35 MPG would net you 455 miles to a tank in our cars (13 gallon tank) Not to call you a liar.... but I don't see that happening. I can get around 270-300 miles to a tank, depending on how hard I push her. So roughly 21-23 MPG.

 

I guess what I'm asking is does the owners manual recomend 91 but says it's ok to run 87 if you want a lack in performance?

 

exactly. To quote GM......"91 Octane is recommended but not required"

 

Thank you.