The upcoming C63 from AMG is eliminating the four-cylinder engine, yet it will not reintroduce a V8. | Carscoops
The company has ultimately determined that the four-cylinder C63 has not been successful.
Mercedes has confirmed that the C63 will transition from a four-cylinder engine to a straight-six.
It remains uncertain whether the new AMG will adopt a hybrid system or maintain a traditional combustion engine.
The 3.0-liter straight-six engine is sourced from models such as the CLE 53 and E53 AMG.
The contentious phase of the Mercedes-AMG C63 S E Performance and its debated four-cylinder engine appears to be concluding. AMG is set to replace the 2.0-liter turbo with a 3.0-liter straight-six, a change that brings the C63 more in line with competitors and may help regain its performance reputation.
Though an official timeline has yet to be established, Mathias Geiser, a member of Mercedes' board responsible for sales and marketing, has confirmed that this change is forthcoming for the performance variant of the upcoming generation C-Class, which was recently previewed in electric form at the Munich motor show.
To be fair, while the 2.0-liter turbocharged four-cylinder engine in the current C63 has its merits, including praised power and responsiveness in the A45 S, the plug-in hybrid setup contradicts the traditional V8 engines of earlier C63 models. Moreover, AMG's departure from a V8 in the C63 occurs while BMW and Audi continue to use six-cylinder engines.
A Confirmed Change
Rumors about the shift from a four-cylinder to a 3.0-liter straight-six have been circulating for several months, and Geiser confirmed this transition in a recent interview with AutoExpress.
“We will have some options where we had a four-cylinder, which will also be available as a six-cylinder going forward,” he stated. “There may or may not be a hybrid, it might be purely internal combustion, perhaps. We will inform you when we reach that point.”
What To Expect
Even though a straight-six isn't a V8, the current G80 M3 and M4 demonstrate that a six-cylinder can be as thrilling as a V8. Mercedes’ most advanced straight-six engine, found in the CLE 53 Coupe, produces 442 hp with the assistance of a 48-volt mild-hybrid system. The E53 AMG also utilizes this same engine but is paired with a plug-in hybrid system, yielding a combined output of 603 hp.
While these numbers are significantly lower than the 671 hp of the current C63 S's plug-in hybrid four-cylinder, the existing M3 Competition produces 523 hp, and there are no complaints regarding its power. Even if the revamped C63 S matches the BMW in power and delivers the right auditory feedback, it could win over enthusiasts back to AMG.
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Stellantis has initiated two recalls affecting nearly 100,000 vehicles. The problems vary, involving both airbag defects and loss of drive power.
In the first case, Jeep is recalling 91,787 Grand Cherokee 4xe plug-in hybrids from the 2022-2026 model years due to a software glitch that can lead to propulsion loss.
According to government reports, the SUVs might encounter an overload of the Battery Pack Control Module microprocessor, leading to a reset. During some resets, the Hybrid Control Processor may incorrectly read a signal from the Battery Pack Control Module, possibly resulting in a loss of drive power.
The automaker has logged 96 customer assistance records, 110 field reports, and 320 additional records possibly connected to the issue, although no accidents or injuries have been reported. Unfortunately, there is currently no solution available.
Airbag Concerns in Minivans
The second recall pertains to 985 Chrysler Pacifica and Voyager minivans from the 2025 model year, which have side curtain airbags that are not properly sealed. This could lead to insufficient pressure retention during deployment.
The issue was identified this summer during an ejection mitigation test on a 2025 Pacifica, which did not meet the excursion limit requirement, prompting an investigation.
This investigation revealed a manufacturing issue with the supplier, and the problem will be rectified by replacing the side curtain airbags with properly sealed ones.
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The upcoming C63 from AMG is eliminating the four-cylinder engine, yet it will not reintroduce a V8. | Carscoops
The company has ultimately concluded that the four-cylinder C63 has not been successful.