Originally Posted by PNA
I have to say, my XFire get's significantly better gas mileage than that. I don't have an SRT6, and I don't drive it agressively (at least not all the tiime) and I've been getting between 22 and 26 mpg -- and I drive in the worst traffic in the country -- and I know I'm using E10. I guess I should be pretty happy with that.
Like
PNA above, I got 24+ mpg last year in my NA 07 and have averaged 23+ for all types of driving since I bought it late 2008. And I'm probably using premium grade gas that has ethanol in it since it's practically infiltrated everywhere nowadays. And I don't see much difference in fuel mileage performance with seasonal changes.
I kinda take the position that if the recommended fuel grade for overall performance is premium, than that's what I run. If you can't afford the fuel, than you bought the wrong car!