The S63 and the N63 are 4.4-liter V8 engines made by BMW and installed into its vehicles. While these two V8 engines have several similarities, they also have significant differences. Let's start ...

The new BMW M5 is outrageously fast, the Panamera S E-Hybrid is unbelievably refined, and the Bentley Flying Spur Speed is damn near perfect. The Mercedes-AMG S63 E Performance, unfortunately ...