Generally from what I have heard it is pretty hefty, but I can also provide you my real numbers since I was just checking. These may or may not apply to you, and you may choose different levels of coverage.
We have a somewhat recent year Tiguan and a 2012 VW Golf. The Golf pushes up our premium because it was totaled and my FIL bought it at auction and fixed it up, so it has a salvaged AND "not actual miles" title. Both cars are listed as "pleasure" for now since we both switched to 95% remote work. This is about $1020 for the year.
If I wanted to add the Y, it would be $1,800 for the year. If I wanted to replace the Golf (not sure what I will do yet because of very limited market value with a salvage title, despite being in perfect mechanical order) my annual premium would be $1,344
I have heard on here Progressive provides the best rates for Teslas so I plan to get a quote there and can send an update when I do.