Don't know what to tell you, my milage has been as high as 43.6 and as low as 40 and the gas i have used versus miles so far averages out at 42.6 in which i am very satisfied, as far as driving it may take a few miles but you can feel this thing go into what i cal an effortless mode and just feather the throttle and does well. I never throttle hard from a stop, just let it pull. SK PS, I have three other vehicals and since driving my TCH i drive those the same way and the milage on those has also picked up consideratly.

TCH-43mpg
VW TDI--48
08 LS 600 HL-20
08 LX 470-16