Performance saloon car (or sedan) is automotive niche traditionally dominated by German "super-sedans" such as BMW M5, M3, Audi RS6, RS4, Mercedes AMG E-Class, C-Class etc.
Recently other manufacturers, such as Cadillac, Lexus and Alfa Romeo have also joined the 4-door performance sweepstakes.
Highest top speed is not always the most relevant benchmark for real performance cars, but it sure is a prestigious title, and, due to the laws of physics, it favors large saloon cars with big, powerful engines.
This list is limited by available data and new vehicles will be added as new data arrives.
Where the F is BMW E60 M5 G Power? That car went 373 kmh (gps) and is capable of doing even more and you don't even put it on the list, but you put Mercedes in first 7 places ... Stupid Mercedes fanboy