I've had my C-Max for about a month now. I only had driven it locally and my gas mileage was 35 to 37 mpg. We just recently took it on some longer trips. We started with about 660 miles on the vehicle. From Wytheville, Va to Western PA over a five day period we put on 411.3 miles and the calculated gas mileage was 34.014 mpg. It was very cold in Western Pa. From PA back to Wytheville, VA we added another 282.2 miles and the calculated gas mileage was 37.61. The next part of the trip was from Wyrheville, Va to Winston-Salem, NC. We stopped there for for 2 days and made some short trips. Then on to Columbia, and back to NC with a stop in Rock Hill, SC. We added 346.2 miles with a calculated gas mileage of 42.66. Then back to Winston-Salem covering 108.5 miles and the car's instrument display mpg was 46.9 mpg for this leg of the trip. I now have 1808.7 miles on my C-Max. The display mpg the last two fill ups has been pretty accurate when I calculate the mileage vs the gallons used. I hope this trend continues.
