My 2017 FFH Titanium has been over-reporting MPG on the trip computer since I bought it new. I have kept a log of all fuel tanked and calculated mpg from that and the trip miles reported on the trip odo. The car consistently over-reports mpg economy by 2 to 5 mpg. I am wondering if this is typical or is there a calibration I need to make. Sorry if this topic has already been covered - please point to that, if so.