It will come on when the battery reaches 20% charge level.
Let's see that will work out. It has a 92KWH battery for a range of 141 miles on level ground.
1.53 miles per KWH which is 1.41 miles per % of SOC.
80% SOC used for the genny to come on, or 20% SOC left. 28.2 miles of range left when the genny comes on. After it's been driven 112.8 miles from a full charge.
It's 99.0 miles from this driveway here to the driveway at my Auburn house.
If I only charge to 80% SOC (the norm) the range will then only be 84.6 miles before the genny comes on. But that is for level ground. But I am sure that will make it to Auburn from here without the genny because that is mostly downhill. Since it is a heavy vehicle the regen will be great going downhill, will surely do MUCH better than that 1.53 per KWH. Probably close to twice that, if not a bit more than twice. The extra weight could then be a benefit because of the better regen.
The real problem will be coming back. Then most likely the genny will come on even is starting out with a full charge. That 141 miles will be close to being all used coming back from Auburn. It certainly will not make it back to Reno from Auburn charged to only 80% SOC in Auburn. Unless I drive extra slow, such as getting behind one of those slow 18 wheelers on the hills. So I would expect some genny use coming back.
Still all within reason, IMO.
But, IMO, they should let us have more manual control of some things in EVs. Sometimes I think they make them too idiot proof. I would like to be able to control when the genny comes on, just like I would like to be able to precondition the battery for fast charging without using the navigation system in my Tesla. That way I could preheat it for a fast charge if I need to use CCS instead of Tesla Superchargers.
-Don- Reno, NV