[01_TraN]

How's everybody mile per gallon doing? Mine is below expected :[ its running about 15.5 mpg. and over here gas is 4.20! ridiculous.

 

[rmmsmd]

13.9 but not much highway and lots of high rpms

 

[pat.ross]

Between 18.5 & 19 mpg. Fair amount of Beltway driving at 75-85 mph. Lots of high RPM dashes.

 

[beegee]

about
18.2

 

[speedjunkie]

Huh!

Well maybe 14. Im always on it. but about 240miles to the tank until indicator comes on.

 

[brandonst878]

I am getting a little over 18mpg. Sometimes I feel like getting after it other times I am happy cruising in 8th. I got over 24mpg cruising on the highway the other day.

 

[LexISGuy]

I am getting about 21-22 mpg lots of highway driving.

 

[SpottsVee]

Getting 18 to 22 depending on how many Full Throttle blast I can get!

 

[08 ISF 08 G8 GT]

I have 21,000 miles on my F and my average so far is a hair over 22mpg. I do mostly highway driving.

My Pontiac G8 GT has 4,000 miles on it and my average so far is 24mpg. (6.0L V8)

With premium @ $4.50/gal its starting to get expensive to fill every other day.

 

[nshanny]

I just put in around 200 miles and it was averaging around 20 overall, while the tank was seeing around 28. That is according to the stats.

 

[ISFChamp]

How's everybody mile per gallon doing? Mine is below expected :[ its running about 15.5 mpg. and over here gas is 4.20! ridiculous.

I hope you didn't buy a 5.0 liter V8 that's raced inspired for fuel economy....

If your looking for fuel economy, I wouldn't have bought an IS-F