I have completed my trip to Canada and can report the milage is much improved in my 2012 3.8. For the 540 miles total trip it did 30.3 mpg this included the usual messing about at the border. Has anybody found out how to turn off the active part of the cruise control yet as at times it can be a pain on declines as it brakes to maintain the set speed. Also, how can you tell if the AC is off as mine seems to work even if the blue light in the AC button is not on.