The turbo-four plug-in hybrid C-Class era at AMG just got its most explicit rebuke yet. Mercedes-AMG unveiled the CLE 646 Spezialanfertigung on Thursday, a wide-body, rear-wheel-drive coupe powered by a 4.0-liter twin-turbo V8 making 637 horsepower. Only 30 will be built, and all 30 are already sold.
That name alone tells you something about the corporate gymnastics required to make this car exist. It’s not a C63. It’s not even an AMG GT. It’s a Mythos Series special, walled off in a production ghetto so small it can’t threaten the broader electrification narrative Mercedes has been pushing for years.
But the hardware speaks louder than the branding.
The 4.0-liter V8 gets a flat-plane crankshaft, a feature that reduces rotating mass and sharpens throttle response. It exhales through a custom Akrapovič exhaust. AMG’s controversial plug-in hybrid system, the one that strapped a turbo four-cylinder to a battery pack and called it a C63, is completely absent.
In its place sits a conventional 48-volt mild-hybrid setup. Three separate cooling circuits manage the powertrain’s thermal demands.
The drivetrain ditches AMG’s 4Matic all-wheel-drive system entirely. Power goes exclusively to the rear wheels through a nine-speed torque-converter automatic, controlled by an electronically limited-slip differential. Launch control gets the car to 62 mph in 3.9 seconds, with a top speed of 193 mph.
Weight savings are serious and deliberate. Mercedes stripped 375 pounds from the car by deleting parking sensors, acoustic insulation, rear seats, and multiple drive modes. The side and rear windows are polycarbonate, the body panels are carbon fiber, and racing bucket seats replace the standard chairs.
A roll bar adds structural rigidity, and a six-point harness for both occupants is available through the Performance Package. Curb weight lands at 4,178 pounds.
The wide-body treatment adds 2.4 inches of width at both axles. Staggered tires measure 305/30ZR20 up front and 335/30ZR20 in the rear. Behind those wheels sit 16.6-inch carbon ceramic front rotors grabbed by six-piston calipers, with 14.2-inch rotors and single-piston calipers in back.
The trunk lid carries a fully adjustable carbon fiber wing on trapezoidal supports. Whether the look works is a matter of taste.
The real tension here is between what Mercedes says it wants to be and what its most devoted customers are willing to pay for. The company bet heavily on the M139 turbocharged four-cylinder PHEV as the future of AMG performance. The C63 S E Performance, with its 671 combined horsepower and 5,200-pound curb weight, was supposed to prove that downsizing and electrification could coexist with the AMG badge. The market’s enthusiasm has been tepid at best.
So now we get 30 hand-built V8 coupes sold at undisclosed prices, positioned as collectibles rather than production cars. It’s a pressure valve, not a strategy reversal. The Mythos Series label gives Stuttgart plausible deniability.
This isn’t a retreat from electrification, they’ll insist. It’s a limited celebration of heritage.
Maybe. But 30 cars selling out before the press release even landed says something the quarterly earnings reports haven’t. Whether Mercedes reads that signal as a reason to expand V8 availability across the CLE lineup or simply pockets the margin and moves on remains the open question.
Share this Story