Thirty units. That’s the entire production run of the Mercedes-AMG CLE 646 Spezialanfertigung, and every one of them sold before the car was even shown to the public.
The second entry in Mercedes-Benz’s ultra-exclusive Mythos Series is a track-obsessed, rear-wheel-drive coupe built around a CLE 53 platform that has been so thoroughly reworked it barely qualifies as the same car. AMG engineers in Affalterbach stripped roughly 375 pounds from the donor vehicle, deleted the all-wheel-drive system entirely, and widened the body by 2.4 inches at both axles. They dropped in a flat-plane-crank version of the M177 EVO 4.0-liter V8 biturbo making 637 horsepower and 627 lb-ft of torque.
The designation “Spezialanfertigung” translates to “special production,” a term AMG has historically reserved for cars that go far beyond a badge-and-sticker exercise. This one earns it. The bodyshell has been reinforced and widened, the roof is carbon fiber, and the rear and side glass replaced with polycarbonate.
The trunk lid, hood, fenders, sills, front fascia, and rear diffuser are all carbon. A manually adjustable rear wing sits on trapezoidal supports. The front diffuser toggles between Street and Race positions via three fasteners, with the latter producing measurable downforce through a Venturi-effect profile under the nose.
The suspension is a four-way adjustable coilover system co-developed with KW automotive, offering independent tuning of low-speed and high-speed compression and rebound. AMG ceramic brakes sit behind 20-inch forged wheels wrapped in tires derived from Mercedes-AMG ONE technology, 305-section fronts and 335-section rears. A bespoke brake-cooling system channels air through large intakes and dedicated ducting to manage heat during extended track sessions.
Sending 637 hp exclusively through a nine-speed torque converter to the rear wheels, with an electronically controlled limited-slip differential managing torque split, is a deliberate provocation. AMG could have kept the 4MATIC+ system and posted faster lap times. Instead, engineers chose driver engagement over safety nets.
The 0-124 mph time of 11.4 seconds and a 193-mph top speed suggest the car doesn’t suffer much for the decision.
The origin story matters here. This was not a boardroom directive. AMG’s own engineers built a prototype on their own initiative, pitching the car from the shop floor up.
Dr. Stefan Weckbach, AMG’s chairman, called it the product of “highly rational engineers” dreaming of “a highly irrational car.” That kind of internal skunkworks energy has produced some of AMG’s best work over the decades, stretching back to the legendary 300 CE 6.0 “Hammer” that put Affalterbach on the map.
Two-tone paint in Mojave Silver Magno over Obsidian Black Magno, split at the B-pillar, gives the car a visual severity that matches the engineering brief. AMG crests on the doors are the kind of quiet flex only thirty people on Earth will enjoy.
The exhaust, developed with Akrapovič and built heavily from titanium, promises the kind of V8 sound that no turbocharged four-cylinder will ever replicate. In a lineup increasingly defined by electrification and hybrid powertrains, the CLE 646 feels like a deliberate, defiant statement about what AMG once was and what a small team in Affalterbach still believes it should be.
Whether Mercedes can sustain this kind of low-volume, high-craft model alongside its electric future remains an open question. The Mythos Series now has two entries, the roofless PureSpeed and this widebody V8 coupe, and both sold out instantly. Demand for analog, mechanically extreme machines clearly hasn’t vanished. The question is whether Affalterbach keeps feeding it.
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