Yeah but really the s63 should even be in the realm of the M550 in 0-60 but it is. Now, the true comparison is the M760 and the Alpina B7.Looks like they are about the same
2018 BMW M550i xDrive 0-60 mph 3.8 seconds
2015/2016 Mercedes S63 AMG 4MATIC Coupe 0-60 mph 3.8 seconds
https://www.zeroto60times.com/vehicle-make/mercedes-0-60-mph-times/
And the newly refreshed S63 AMG is coming out for 2018 in a couple months
Its supposed to do 0-60 in 3.4 seconds


