gas-cap cover anomaly

It probably depends on the grade of the slope where you are parked, which affects the fuel level in the tank. That’s why I always use the same pump when refueling. I didn’t know that opening the fuel-inlet lid resets the distance-to-empty range.

 

Far from ideal if you just pump three or four gallons when you're at ½ a tank

 

Perhaps it needs a little while to recalibrate.

 

I believe calibration happens only once (a few seconds after you drive) after a fill-up. It is not dynamic like the electric-range estimate.

 

I’d warrant it gets more accurate a few miles down the road.

 

I don’t think so. Try it for yourself after a fill-up. DTE is not dynamically updated as far as I know. By the way, I am the DTE record holder on PriusChat, having reached 768 miles in my 2021 Prius Prime Limited.

What is your DTE after fill-up? | Page 6 | PriusChat

 

If that’s the only thing it does, I wouldn’t care, never use that distance to empty, just the gas gauge.

 

they are all just guess-a-mates.... Are you really going to ignore "the last gas station for 50 miles" sign; because your DTE is displaying 51 miles?????? This is why there are "Darwin Awards".....

 

In my Gen 5 (not prime), the DTE is not static. The sum of DTE and trip ODO will typically rise for the first hundred miles or so, and by mile 300 the sum will shrink.

My WAG is that the DTE immediately after filling includes the entire tank capacity as the denominator in the MPG fraction, then counts it less all the way to an absurd DTE of zero at which point I still have a couple of gallons. It's a weird distortion to avoid telling people that they only have a range eight or so gallons to use before invading the reserve.

 

Similarly to Kramer in Jerry's Saab, I figure I can 50 miles after it says "Zero"...maybe.