Now have the Mustang going up to have the faulty underbody removed. When rebuild is complete, I should have access to a lift that will work. Not comfortable, but will safely suffice.
The Insight has had two tanks down.
Tank one, on 2014/06/26.
9.701 gallons

694.7 miles.

And reset.

LMPG- 46 MPG @ 84,279 miles.

As one can see, a claimed 76.6 mpg, with an actual number turnout of 71.611 mpg.
-
My next tank was filled 2014/07/14. Claimed 80.8 MPG over 818.5 miles.

9.871 gallons used

LMPG is 46.0 @ 85,097.

Pen and paper makes that 82.91966 mpg.
I doubt it is miss fills, just not calculating as well it should. Even being off, my new best trip to a favorite place turned out like this right after the fill:

And getting home:

And earlier today, I was trying to time it right- but stupid me was paying attention to the road:
