I must chime in here and reitterate my crazy story on milage. I was uninterested as most with p-cars about milage and never really looked that often at milage but averaged about 22.5 combined city and highway. Then I got the Supercharger and noticed the milage was climbing to 29mpg. I just checked the milage last week and reset the computer, now it reads 37 on the highway only and 34 with the air on. Please keep in mind that my city driving is in a town of 3500 so very little stop and go or idle. I'm sure it would be much less in true city driving but I am really an aggressive driver on the highway here in Wy. Will

 

never paid any attention to city/hwy mileage. i avg 21 mpg on my C4. Gas price is high here, but no where close to what you guys pay for out west.