The C-Class won't get the V8 back — it moves to a six-cylinder AMG instead, ending eight-cylinder power in Mercedes' compact performance car for good. BMW Never Had This ProblemWhile Mercedes was experimenting, BMW kept its V8 and just bolted electrification onto it instead of ripping it out. In the new G90 M5, engineers paired the 4.4-liter twin-turbo V8 with an electric motor for 717 hp combined. For the last few years, BMW got to be the brand that kept the V8 while Mercedes looked like it was leaving the category behind. So it’s not much of a stretch to think some AMG loyalists, annoyed by the C63 going four-cylinder hybrid, might have bought the BMW instead.