Hello,
1. I was curious how does the accuracy of the NAV radio mpg display compare to your tank readings?

2. Do they get closer as your tank refills get higher in number?

3. How does the DTE display compute your remaining mileage?

I just filled up my second tank on my FWD 07 a little over 800 miles now. The DTE was reading 22 miles left, and it took 13.2gal to fill up and I had 401.2 miles since my 1st fill up = 30.3mpg

However - the NAV display is showing 32.3mpg - Why the big discrepency? I had reset the display at the beginning of the tank because I wanted to start fresh with my driving vrs my wifes driving of the car.

After filling up the DTE read 463mte - So is this computed from the NAV mpg in some way?

Thanks from a new happy FEH owner (2 weeks today!)