Just did a trip that ran tank to zero range. Computer said 28.6 mpg (was 31.5 on highway) filled up stuffed just like I did yesterday and I calculated 24.4mpg. It isn't even close. I bet when they set range based on 13 gallons the dummies also let everything else calc off that rate. We'll need that issue reprogrammed at some point I don't mind 1 mpg but 4+ is pretty bad.