The Mercedes-Benz CLE 450 4MATIC Cabriolet, introduced in April 2024, represents the top-tier engine offering within the newly launched A236 CLE Cabriolet range. Positioned as the performance and luxury flagship of the line, it replaces the C-Class Cabriolet and E-Class Cabriolet models, blending elements of both into a single, more focused offering. This variant combines a 3.0-liter inline-six cylinder engine with mild hybrid technology, a nine-speed automatic transmission (9G-TRONIC), and Mercedes-Benz’s 4MATIC all-wheel-drive system. The CLE 450 aims to deliver a refined open-air driving experience with substantial power and modern technology.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | CLE |
| Generation | CLE Cabriolet (A236) |
| Type | CLE 450 (381 Hp) Mild Hybrid 4MATIC 9G-TRONIC |
| Start of production | April, 2024 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Combined fuel consumption (WLTP) | 7.9-8.5 l/100 km (29.8 – 27.7 US mpg, 35.8 – 33.2 UK mpg, 12.7 – 11.8 km/l) |
| CO2 emissions (WLTP) | 180-192 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.7 sec |
| Acceleration 0 – 62 mph | 4.7 sec |
| Acceleration 0 – 60 mph | 4.5 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Emission standard | Euro 6e |
| Weight-to-power ratio | 5.3 kg/Hp, 190 Hp/tonne |
| Weight-to-torque ratio | 4 kg/Nm, 249.4 Nm/tonne |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 23 Hp |
| Electric motor Torque | 205 Nm (151.2 lb.-ft.) |
| Electric motor location | Between the combustion engine and the transmission |
| Power | 381 Hp @ 5800-6100 rpm |
| Torque | 500 Nm @ 1800-5000 rpm (368.78 lb.-ft. @ 1800-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 256 |
| Engine displacement | 2999 cm3 (183.01 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | Inline |
| Cylinder Bore | 83 mm (3.27 in.) |
| Piston Stroke | 92.4 mm (3.64 in.) |
| Compression ratio | 10.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Valvetrain | DOHC, CAMTRONIC |
| Kerb Weight | 2005 kg (4420.27 lbs.) |
| Max. weight | 2495 kg (5500.53 lbs.) |
| Max load | 490 kg (1080.27 lbs.) |
| Trunk (boot) space – minimum | 295 l (10.42 cu. ft.) |
| Trunk (boot) space – maximum | 385 l (13.6 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Max. roof load | 75 kg (165.35 lbs.) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 75 kg (165.35 lbs.) |
| Length | 4850 mm (190.94 in.) |
| Width | 1861 mm (73.27 in.) |
| Width including mirrors | 2042 mm (80.39 in.) |
| Height | 1424 mm (56.06 in.) |
| Wheelbase | 2865 mm (112.8 in.) |
| Front track | 1606 mm (63.23 in.) |
| Rear (Back) track | 1585 mm (62.4 in.) |
| Front overhang | 888 mm (34.96 in.) |
| Rear overhang | 1097 mm (43.19 in.) |
| Ride height (ground clearance) | 111 mm (4.37 in.) |
| Minimum turning circle (turning diameter) | 11.7 m (38.39 ft.) |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front suspension | Independent multi-link suspension, Transverse stabilizer |
| Rear suspension | Independent multi-link suspension, Transverse stabilizer |
| Front tires | 245/40 R19 |
| Rear tires | 275/35 R19 |
| Wheel rims size | 19 |
Powertrain & Engine Architecture
The heart of the CLE 450 is Mercedes-Benz’s M 256 3.0-liter inline-six cylinder engine. This engine utilizes direct injection and a twin-scroll turbocharger with an intercooler to deliver a potent 381 horsepower and 500 Nm (368.78 lb.-ft.) of torque. The engine incorporates CAMTRONIC variable valve timing for optimized efficiency and performance. Crucially, the CLE 450 features a 48-volt mild hybrid system. This system employs an integrated starter-generator (ISG) that provides a power boost during acceleration, allows for smoother start/stop operation, and enables coasting with the engine shut off to further enhance fuel economy. The ISG adds 23 hp and 205 Nm (151.2 lb.-ft.) of torque. Power is transmitted to all four wheels via Mercedes-Benz’s 9G-TRONIC nine-speed automatic transmission and the 4MATIC all-wheel-drive system. The 9G-TRONIC is known for its smooth shifts and wide gear ratio spread, contributing to both performance and efficiency.
Driving Characteristics
The CLE 450 4MATIC Cabriolet delivers a refined and capable driving experience. The combination of the inline-six engine, mild hybrid system, and nine-speed automatic results in strong acceleration – 0 to 60 mph in approximately 4.5 seconds. The 9G-TRONIC transmission provides quick and seamless gear changes, and the 4MATIC system ensures excellent traction in various conditions. Compared to potential lower-powered four-cylinder variants, the CLE 450 offers a significantly more responsive and engaging driving experience. While not as overtly sporty as a dedicated AMG model, the CLE 450 strikes a balance between performance and comfort, making it well-suited for both spirited driving and long-distance cruising. The mild hybrid system contributes to a smooth and quiet driving experience, particularly in urban environments.
Equipment & Trim Levels
The CLE 450 4MATIC Cabriolet comes standard with a comprehensive suite of features, reflecting its position as the top-of-the-line trim. Standard equipment includes premium leather upholstery, heated and ventilated front seats, a Burmester surround sound system, a large touchscreen infotainment system with Mercedes-Benz’s MBUX interface, and a suite of advanced driver-assistance systems such as adaptive cruise control, lane-keeping assist, and automatic emergency braking. Optional extras include a head-up display, augmented reality navigation, and various interior trim options. The convertible top is a multi-layer acoustic soft top designed to provide a quiet and comfortable cabin experience even at high speeds.
Chassis & Braking
The CLE 450 Cabriolet features a sophisticated chassis designed to deliver a comfortable and controlled ride. It utilizes an independent multi-link suspension at both the front and rear axles, along with transverse stabilizers to minimize body roll. The steering system is a speed-sensitive electric power steering system that provides precise and responsive handling. Braking duties are handled by ventilated discs at all four corners, providing ample stopping power. The 4MATIC all-wheel-drive system continuously adjusts the torque distribution between the front and rear axles to optimize traction and stability.
Market Reception & Comparison
Initial reviews of the CLE 450 4MATIC Cabriolet have been largely positive, with critics praising its refined driving experience, luxurious interior, and advanced technology. The fuel economy of 7.9-8.5 l/100 km (29.8 – 27.7 US mpg) is competitive for a vehicle in this class, particularly considering its performance capabilities. Compared to potential competitors like the BMW 4 Series Convertible and Audi A5 Cabriolet, the CLE 450 is often cited as offering a more luxurious and technologically advanced experience. The mild hybrid system contributes to improved fuel efficiency compared to non-hybrid alternatives.
Legacy
While it is too early to assess the long-term reliability of the CLE 450 4MATIC Cabriolet, Mercedes-Benz’s M 256 engine family has proven to be generally reliable in other applications. The 9G-TRONIC transmission is also a well-established and proven unit. The combination of a robust powertrain and a well-engineered chassis suggests that the CLE 450 should offer years of reliable service. In the used car market, the CLE 450 is expected to hold its value well due to its desirable combination of performance, luxury, and technology. Its position as the top-tier engine option within the CLE Cabriolet range will likely make it a sought-after model among enthusiasts and buyers looking for a premium open-air driving experience.
