It is happening. Slowly. Inevitably.
Mercedes-Benz is building a new 4.0-liter flat-plane crank V8. It starts in the S-Class. The S580 is already wearing it, pushing out 530 horsepower and that meaty 553 pound-feet of low-end torque. But the AMG division is not rushing to slap this thing into a C63 just because they can.
They are checking the work.
A flat-plane crank is not just a marketing buzzword. It reduces rotational mass. The engine revs quicker. The response is sharper. It makes the car feel alive, not just fast. But Mercedes-AMG has standards. They want the engine to survive their specific abuse. So far, the S-Class gets the VIP treatment. The AMG models have to wait in the wings.
The Return Of Proper Horsepower
This delay matters. The current C63 uses a four-cylinder hybrid powertrain. It is fast in a straight line. It is controversial among purists. Many buyers never warmed to the idea. The driving experience is different, sure. But it lacks the soul of the old V8.
The E63 estate wagon is in an even weirder spot. The current E53 AMG uses a turbocharged inline-six. It is competent. But it lacks the brute force of a V8. And frankly, the braking performance in some recent Mercedes products has been lacking. The E53 suffers from this reputation.
“One step after the other. First we have to make sure we have very nice and sophisticated V8, and of course, we now look into market demand.”
That quote comes from Mathias Geisen. He is on the board at Mercedes. His statement confirms phase one of the V8 return has started. The foundation is laid. The engine exists. The next phase is application. And the market demand is clear.
Where Will The V8 Go Next?
The C63 sedan is the obvious candidate. It is the most popular AMG model. It is also the one carrying the most baggage from the four-cylinder era. Restoring the V8 to the C63 would silence critics. It would also satisfy the core demographic.
Then there is the E63 wagon. The performance estate segment is heating up. Audi is dominating with the RS6. BMW has the M5, though that is a sedan, and the X5M competes in spirit. But a true wagon? That is where Mercedes can shine.
The US market loves high-horsepower wagons. It always has. If Mercedes brings a V8-powered E63 wagon to America, it will sell. It might also be a plug-in hybrid. Emissions regulations are getting stricter. Fuel economy matters. But the core idea remains: big displacement, flat-plane crank, serious power.
The Wait Is The Hard Part
Will the new C63 be a carbon-fiber-clad, track-focused beast? Maybe. The Black Series designation exists. The E63 wagon is a daily driver. But both need that V8 character.
The S-Class proves the engine works. It is sophisticated. It is refined. Now it needs to be tough. AMG engineers are watching. They are testing. They are likely mapping out the integration for the next generation models.
The four-cylinder C63 is here. It serves a purpose. But the soul of AMG has always been the V8. The inline-eight is gone. The V12 is dying. The V8 is the last bastion of raw internal combustion performance at Mercedes-Benz.
Don’t expect the new C63 to drop next week. But expect it to happen. The engine is ready. The market is waiting. The only question is how much power AMG decides to unleash when they finally pull the trigger.
Will you buy a hybrid C63? Or are you waiting for the real thing?
