Key battery drain is a thing if the key is kept within 6 feet of the vehicle. My original fob battery lasted about 1 year. Second fob was only used a couple of times and was still good after ~2 years. (MY2021 4/21 production)
Heads up: race tex/alcantra steering wheels aren't awesome after a while of daily use. Some can clean up with HI-TECH extra foamy but with heavy use they look crappy. Of course one can just use driving gloves every time they drive. ;)
If if your drive unit is faulty like mine was on my 21 RWD you'll be glad you have extended warranty. It's ~$40K to replace. Replaced and first gear noise came back after a short while. I sold the car a couple months ago due to concern of repair costs outside of warranty.
None. My 2021 still smells new. The key to keeping new car/natural smell is: NO food, no drinks, no pets, no dirty/smelly clothing, no foreign heavy odor matter inside the cabin. Whenever I would have fresh food or take-out it always goes in one of the trunks - preferably the front.