I am reading the posts with interest since I have a 2014 that will be delivered in a week. The MPG numbers are of interest to me and I wonder how those reported are calculated. The best way to calculate MPG is to go from fill up to fill up and the miles traveled between full ups. Results will vary because filling up might be incomplete, but doing this repeatedly the average will be correct. MPG coming from the built in computer which I believe is being reported here scan be in error due to calibration.