Ford C-Max

I am wondering what update you are talking about. How could the update increase mileage when Ford lowered the EPA MPG rating of the C-Max not once but twice. I have a $1,000 from them to prove it. When towing a C-Max the ignition key is supposed to be in the ACC (first) position. This is different than turning the key to the "On" (second) position. When the charge line works the car can be towed without the battery depleting. Without the tow line the car will be dead in about four hours.