2023 Mercedes-AMG C63 to Make a Radical Engine Change

• Here's what we expect from the next-generation Mercedes-AMG C63.

• It will drop the V-8 and instead be powered by a 500-plus-hp hybrid powertrain with a turbocharged four-cylinder gas engine.

• The new C63 will debut this year and sits above the six-cylinder AMG C43.

Engine downsizing usually means losing a cylinder or two, but the upcoming W206 generation of the Mercedes-AMG C63 makes a more radical reduction. Gone is the old car’s twin-turbocharged V-8 and in goes a hybridized and turbocharged four-cylinder. But, before we all get too upset about the demise of one of our favorite engines, let’s consider the reasons to be optimistic about the new one.

The next C63 will use a longitudinally mounted version of the M139 turbocharged 2.0-liter inline-four, which, in transverse form, powers AMG’s CLA45 and GLA45. Like in its other longitudinal applications in the SL43 and C43, the C63 will have a 400-volt electric turbocharger (or e-turbo), a bit of motorsport technology transfer from M-B’s Formula 1 powerplant. A small motor mounted directly onto the turbo’s shaft will be able to accelerate the compressor to deliver boost before exhaust gasses start to flow. AMG says it will be possible to keep the turbo spinning even when the engine is idling to ensure instant throttle response.