Think twin-clutch 'boxes are amazing? New Mercedes-AMG C63 will have twin gearboxes

Jason · Mar 31, 2021 06:00 PM

Think twin-clutch 'boxes are amazing? New Mercedes-AMG C63 will have twin gearboxes 01

449 PS. That is how much power Mercedes-AMG will extract out of its 2.0-litre, 4-cylinder engine which will motivate the next Mercedes-AMG C63. Yes, the AMG C-Class that has up to now been powered by a succession of V8 engines, will receive a 2.0-litre, 4-cylinder heart (codenamed M139), albeit one strapped with Semtex explosives.

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The most powerful 4-cylinder production car engine, in the world

The M139 is already pulling duty on the current AMG 45-series cars, with a handy output of 421 PS and 500 Nm (it is, currently, the most powerful 4-cylinder production-car engine in the world), and paired to AMG's Speedshift MCT 9-speed transmission. To further elevate power levels, Mercedes-AMG will pair the M139 with a plug-in hybrid system, dubbed the E Performance models. 

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This plug-in hybrid system is inspired by the Motor Generator Unit-Heat (MGU-H) Mercedes uses in its Formula One cars. It has a 6kW electric motor sitting on the turbocharger shaft, to basically eliminate turbo lag and improve throttle response, even at lower engine speeds (for long, a stick used to beat turbo engines). This helps push power to 449 PS, from just the engine alone.

Think twin-clutch 'boxes are amazing? New Mercedes-AMG C63 will have twin gearboxes 01

On top of that, the rear axle will package a high-voltage electrical system (called the Electric Drive Unit, EDU). The EDU packs a 6.1-kWh battery and an electric motor that drives the rear wheels via a two-speed gearbox. The turbocharger's electric motor will also draw power from the EDU's battery. 

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In short bursts, the EDU can provide up to 204 PS, or 95 PS in a constant stream. Mercedes-AMG says the combined power and torque output is slated to outperform the outgoing V8's (effectively around 653 PS). Bold claims indeed. 

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You will be missed

While it's undeniably sad that V8s are going the way of the dodo, Mercedes-AMG is hell-bent on making sure their new slew of performance models get the grunt that befits the brand. Any 4-cylinder powerplant capable of producing more than 600 PS gets my vote of confidence.

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Jason

Road Test Editor

Jason's foremost passion is all things automotive, where he spent his formative working years as a Product Planner and Trainer. An Advanced Driving Instructor by training and an all-round enthusiast, Jason loves going into intricate details about driving dynamics. Will drive anything with 4 wheels and a steering.

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