10 day old 2020 XSE with 380 miles and my battery died after 3 days in my garage without use. Jump-started from under the hood with a battery pack and started up with no problem. Drove to the dealer today and they initially said no problems. I insisted that they keep it overnight and test again in the morning. I can deal with the fuel tank issue but if this keeps happening, I may be getting rid of this thing. I'll update once back from the dealer.