I just got my R/T 6 speed last week. so I'm still operating off the first tank of gas. I've got 250 miles on it so far, but the EVIC isn't showing promising numbers. I just wonder how accurate that thing is. The EVIC said I had slightly over 20 mpg on the way home from the dealer. This was a 44 mile stretch of 4 lane highway. Since then the EVIC says I've dropped into the 18 mpg range. When I accelerate, I usually put my foot in it, but I don't normally drive at an outlandish speed. I think my problem may be that I keep it in too low of a gear. I like to feel the car respond when I mash the gas, but if it's in too high of a gear, it won't do it. Therefore, I tend to keep it in lower gears. I've very seldom had it in 6th, although the owners manual says that it can be put in 6th after 40 mph. I couldn't imagine having it in 6th at 40 mph though. In my experience, you get little throttle response from sixth when you mash on the gas unless the car is doing 75 or above.