But the new, four-wheel drive Mercedes-AMG C63 is expected to retain 500bhp-plus when it goes on sale in 2021
17 October 2019

Mercedes-AMG will send a clear message that it is adapting to modern demands with the upcoming third-generation C63 by forgoing its long-standing V8 power in favour of an advanced four-cylinder hybrid drivetrain that develops more than 500bhp.

The new C63 will be the first in a number of new AMG models earmarked to receive an electrified version of Mercedes’ new turbocharged 2.0-litre M139 engine when it goes on sale in early 2022.

The four-wheel-drive rival to the Audi RS4 and BMW M3 is already undergoing intensive development at AMG’s Affalterbach engineering headquarters.

The potent four-cylinder engine kicks out a maximum of 416bhp and 369lb ft of torque in non-electrified form in the new A45 and its related siblings. The unit has already been engineered for longitudinal mounting as well as mild-hybrid electric boosting. It’s destined to be used in not only the next C63 but also, in a less heavily tuned form, in a follow-up to today’s turbocharged 3.0-litre V6-powered C43.

The new C63 will be offered in saloon, coupé and convertible bodystyles, with the next C43 likely to be sold in those three guises as well as an estate version.

Other AMG models set to run the new electrified driveline include successor models to today’s GLC 43 and GLC 63 SUVs, the GLC 43 Coupé and the GLC 63 Coupé.

Autocar has been told the M139 engine will adopt a 48V integrated starter motor similar to that already used by the turbocharged 3.0-litre in-line six-cylinder M256 unit, which powers the CLS 53 4Matic+ and other recent new AMG models.

In the CLS 53 4Matic+, the gearbox-mounted starter motor provides an additional 22bhp and 184lb ft of electric boosting. In the next C63, however, it is set to be tuned to provide significantly more power in combination with a similar torque loading.

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The new EQ Boost hybrid drivetrain is also planned to run in combination with Mercedes’ nine-speed torque-converter MCT Speedshift gearbox.

Nothing is official at this early stage, but Affalterbach insiders with knowledge of AMG’s new model plans suggest the new four-cylinder hybrid drivetrain will match the existing second-generation C63 4Matic’s V8 engine in outright power at a maximum 503bhp. This is despite a 50% reduction in swept capacity and cylinder count. With the benefit of electric boosting, it has also been conceived to deliver up to 553lb ft of torque – a 37lb ft increase on today’s C63 S 4Matic.

Details remain scarce, although the new driveline is thought to adopt a lithium ion battery of higher capacity than the 0.9kWh unit used by the CLS 53 4Matic+. It is also expected to use a more advanced energy recuperation system that harvests kinetic energy at each wheel.

One of the most significant advantages in the adoption of the new electrified driveline is a reduction in weight over the front axle of the new C63 4Matic.

At 160.5kg, the M139 four-cylinder unit weighs 48.5kg less than the M177 V8 engine used by today’s C63 4Matic. Even with the addition of the hybrid architecture, including a disc-shaped electric motor and power electronics, the overall weight of the new powerplant is claimed to undercut that of today’s unit.

Additionally, the new powerplant’s weight is concentrated lower, which aids efforts to bring about a lower centre of gravity for the new model, theoretically improving its agility and body control. Further development plans for the next C63 4Matic include a new four-wheel drive system to provide a fully variable apportioning of power front to rear. This will allow AMG to engineer the new model with rear-wheel-drive properties in certain driving modes, much as with the larger E63 sibling. AMG CEO Tobias Moers told Autocar earlier this year that all next-generation AMG models will adopt this system, moving away from pure reardriven models due to customer demand for all-wheel drive.

The decision to provide the C63 4Matic with four-cylinder power was apparently driven by Mercedes-Benz as part of rapidly escalating efforts to reduce fleet CO2 emissions while harnessing the engineering lessons pursued during the development of the Mercedes-AMG One hypercar.

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Comments
37

17 October 2019

I hope to be proven wrong, but I think that all the joys of driving are being sucked out and all you will be left with is tremendous acceleration in a straight line for 2 or 3 seconds.  The rest of the time, the driving experience will be humdrum.

jer

17 October 2019

Not sure that on paper it makes much difference in the e53. It was bound to happen but the new motor or power unit will.feal like another fast appliance. This gives a pointer that the v8 will be gone sooner or later but i wonder if in the e it will be with a biggrr battery straight 6 hybrid like the e53.

17 October 2019
At the risk of sounding like a dinosaur, it seems that all pleasure is being sucked out of driving and at a very rapid rate. Driver assistance systems, automatic gearboxes, compulsory speed limiters, GPS black boxes and electrification are all combining in to a perfect storm. I can only see two options, either buy a simple rwd car with an ICE now to keep for 30+ years or give up on cars altogether; I haven't decided which it is yet but am constrained by both my finances and the fact that I work in the motor industry.

17 October 2019
Like what happened with horses, ICE cars will be treasured for the weekend and special occasions. I think that in the future EVs, autonomous or not, will be the norm and the only ICE cars that will remain will be something closer to Lotus 7 than 2000kg, four wheel drive, 700hp beasts, with zero steering feel..

19 October 2019
jameshobiecat wrote:

At the risk of sounding like a dinosaur, it seems that all pleasure is being sucked out of driving and at a very rapid rate. Driver assistance systems, automatic gearboxes, compulsory speed limiters, GPS black boxes and electrification are all combining in to a perfect storm. I can only see two options, either buy a simple rwd car with an ICE now to keep for 30+ years or give up on cars altogether; I haven't decided which it is yet but am constrained by both my finances and the fact that I work in the motor industry.

There is a third option - motorcycles. The last bastion of gas guzzling lunacy, at least for a few more years.

17 October 2019

At this rate I'll be giving up driving in 10-15 years time and will instead simply use the bus or a taxi to get around as by then the joys of driving, and being able to be one with a car and the driver making many choices on how they drive, will be gone.

17 October 2019
Article says "torque-converter MCT gearbox".
I thought the MCT was multiplate clutch pack (motorbike/auto trans clutch pack style I assume) with computer controlled on/off engagement, and that the TCT was the torque converter one?

Wish they would just put torque converters in all the cars.

17 October 2019

Yup its the 9G-Tronic with the multi clutch pack instead of the torque converter. It allows quicker shifts

17 October 2019

A 1.0 3 pot.   Half the attraction of these cars was the engine config., these types of cars days are numbered 

17 October 2019
The definition of a shit headline.

I don't care how much power it has. I'd rather have a 400bhp V8 than an 800bhp 4 turbo hybrid piece of dull crap.

They dig their own graves if they think this is what is being demanded their customers.

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