For 2020 BMW has added more power to the M550i. Now with 523hp and 553lb-ft, it’s almost as powerful as the last-generation M5. In fact, it’s faster than that. 0-60mph comes in at 3.6 seconds only 0.4 seconds slower than the current M5.

https://jmakmedia.com/2020/08/17/2020-bmw-m550i-xdrive-review-the-best-non-m-m-car/