[LonePalmBJ]

I've taken the car on an extended roadtrip and saw the low fuel warning a couple of times. It came on when there was between 40-50 miles range left and my battery was completely empty, so I'm guessing it's two gallons.

BigDaddy, there is no Gas-only range indicator. There's battery-only range, and Total range (battery + Gas) so the 90 miles you see also include whatevers left on your battery.

I think the tank is slightly larger than 9.5 gallons. I think it's 9.9 usable, which means it may even be slightly bigger than that. Twice I've put in 9.25 gallons and the range wasn't at 0.

Brent

 

[LonePalmBJ]

My Total Range, however isnt decreasing as my battery range decreases at the same ratio (1:1 I would presume). Is that an error?

Total range should decrease as you drive in Stealth mode. If it's not decreasing at all I would be concerned.

The decreases aren't necessarily linear though: The first few "miles" of stealth range are a lot shorter than the last few. In other words, the Stealth range calculation fluxuates based on battery level, which can drain more or less quickly based on terrain, temperature, driving style, etc. It not uncommon for it to have gone from "50 miles" to "49 miles" by the end of my driveway and to "47 miles" by the time I get out of my neighborhood.