[Nismantx]

Please check your mode of driving. select the ECO mode and also use Estep to maximize range.

 

[Nismantx]

We went for a big loop around TN and north GA over the weekend looking for a dealer that could actually sell us an Ariya (they won't) and I test drove 3 different Engage trims which of course all have the smaller 63kwh battery. The first one was indicating 155 miles at 83% SOC, the 2nd was showing 224 miles at 98% and the 3rd was 215 miles at 89%. If you extrapolate these numbers out for 100% SOC (186, 228 and 241) I guess it's possible the Ariya's "GOM" has some bugs to work out.
I guess if you really want to know what's going on maybe try a 55mph range test and see what you get.
The real world energy available is just that so It should be close to 289 miles at those speeds regardless of what the app thinks it is.

I don't think there is any bug in the calculation of mile/range in my experience. What you have experienced was 3 different vehicles driven or used by multiple people. One of those vehicles might have been idle for longer another one was driven normally, third might have been driven softer. The calculation takes into consideration how many kW/mile was used. So based on that it will display that if you drive this way then you could achieve this range with this charge. These get updated after each trip. You could see that also once you turn the vehicle off. Next time it will show the updated range.
My best range is 5.75 miles/kw. To get EPA s 304-mile range, you will need to drive a minimum of 3.49 miles/kW. Even on the highway going 70 mi per hour for 50 miles I have achieved 3.74 mi/kW. After calculating manually all the miles from my previous charge till now, I can confirm that it is displaying correctly.