Mercedes-AMG Unleashes 637-HP CLE 646 Spezialanfertigung: A Rear-Drive Track Monster!

The Mercedes-AMG CLE 646 Spezialanfertigung emerges as a highly exclusive, track-focused high-performance coupé, positioned as the second vehicle in Mercedes-Benz’s elite Mythos Series. Dubbed a "track weapon" with its name roughly translating to “custom made,” this road-legal coupe is engineered to deliver maximum driving dynamics for enthusiasts seeking an experience far beyond the standard CLE53 Coupe. With an extremely limited production run of just 30 examples worldwide, the CLE 646 Spezialanfertigung has already sold out, underscoring its immense desirability among performance aficionados.

At the heart of the CLE 646 Spezialanfertigung lies an AMG-massaged twin-turbo 4.0-liter V-8 engine. This formidable powerplant is meticulously tuned to produce an impressive 637 horsepower and 627 lb-ft of torque, with its full torque accessible across a broad range from 2,500 to 4,500 rpm. A key feature of this engine is its flat-plane crankshaft, which contributes to reduced rotating mass, enabling quicker revving and enhancing both throttle response and mapping precision. This potent combination allows the CLE 646 to achieve a blistering acceleration from 0 to 124 mph in just 11.4 seconds, a notable improvement over the CLE53. Its top speed is electronically limited to a remarkable 193 mph, an exceptionally high figure for a CLE-based vehicle.

Designed explicitly for intensive racetrack use, the Mercedes-AMG CLE 646 Spezialanfertigung incorporates a suite of advanced engineering solutions aimed at optimizing thermal management and overall performance. The V-8 engine utilizes three distinct cooling circuits: one dedicated to the engine itself, and two additional circuits to manage the temperatures of the transmission and the 48-volt battery components. These systems are robustly designed to withstand demanding operating profiles, including prolonged, high-intensity track sessions in elevated ambient temperatures. Furthermore, the 646 Spezialanfertigung is equipped with a specialized version of AMG’s Ceramic High-Performance Composite Braking System, engineered to endure the extreme loads generated during track driving. This sophisticated braking setup features large air intakes in the front bumper and dedicated airflow guides to enhance cooling. At the front axle, ventilated and perforated ceramic brake discs work in conjunction with six-piston calipers, while the rear axle employs single-piston calipers with ventilated and perforated discs. The system also includes technology designed to efficiently transfer heat from the braking components into the discs’ cooling channels, thereby reducing brake-pad temperatures.

Weight reduction was a paramount objective for the Mercedes-AMG engineers. The CLE 646 channels its power exclusively to the rear wheels via a nine-speed transmission, a design choice that not only shaves off weight but also significantly enhances the coupe's engaging driving characteristics. An electronically controlled limited-slip differential further refines the dynamic experience by precisely distributing torque between the rear wheels, which improves traction and supports controlled drifting when desired. Additionally, the vehicle's purist, track-focused intent is highlighted by the absence of rear seats, further contributing to weight savings and emphasizing its performance orientation.