We have at least 3 of us that have the new SOUL EV in the greater Phoenix area. We ordered them from California. We will be doing extensive HEAT testing and measure the battery capacity to be sure it can take our HEAT.
We get a high of about 122F but on the dark asphalt it can reach 160F. The LEAF and others have had a hard time with the heat. An Air Conditioning system also has to work very hard in the extreme heat. The KIA SOUL EV has a very efficient Heat Pump. We will see how that hold up in our HEAT.
Our area is the first indicator that any vehicle can or can't take the heat. This is why many car manufacturers like Toyota, GM , Audi-VW and others test here. But they don't always give you the real life test. In real life we park in the hot sun for 8-10 hours a day since we work. We then drive home in heavy traffic and park in a hot garage to charge. They don't seem to test like that but we do!