The Mercedes-Benz E-Class Cabriolet A238, specifically the E 450 EQ Boost model produced from 2020 to 2023, represents a sophisticated blend of luxury, performance, and mild-hybrid technology within the E-Class range. Positioned as a premium offering, it sat towards the top of the Cabriolet lineup, offering a significant step up in power and refinement compared to the E 350 models. This variant was primarily marketed towards buyers seeking an open-air grand touring experience with a focus on comfort and technological innovation. The A238 generation, introduced in 2017 and facelifted in 2020, brought a more modern aesthetic and enhanced features to the E-Class Cabriolet, solidifying its position in the competitive luxury convertible segment.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-Class |
| Generation | E-Class Cabrio (A238, facelift 2020) |
| Type | E 450 (362 Hp) EQ Boost 9G-TRONIC |
| Start of production | 2020 |
| End of production | 2023 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 10.2 l/100 km (23.1 US mpg) |
| Fuel consumption (extra urban) | 7.8 l/100 km (30.2 US mpg) |
| Fuel consumption (combined) | 9.4 l/100 km (25 US mpg) |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 60 mph | 5.2 sec |
| Maximum speed | 210 km/h (130.49 mph) |
| Gross battery capacity | 0.9 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 21 Hp |
| Electric motor Torque | 250 Nm (184.39 lb.-ft.) |
| Internal combustion engine Power | 362 Hp @ 5500-6000 rpm |
| Internal combustion engine Torque | 500 Nm @ 1600-4500 rpm (368.78 lb.-ft.) |
| 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 |
| Fuel injection system | Direct injection |
| Engine aspiration | Twin-scroll turbo, Intercooler |
| Trunk space (minimum) | 285 l (10.06 cu. ft.) |
| Trunk space (maximum) | 360 l (12.71 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal) |
| Length | 4835 mm (190.35 in.) |
| Width | 1857 mm (73.11 in.) |
| Height | 1430 mm (56.3 in.) |
| Wheelbase | 2873 mm (113.11 in.) |
| Gearbox | 9 gears, automatic transmission G-TRONIC |
Powertrain & Engine Architecture
The heart of the E 450 Cabriolet is the M 256.930 3.0-liter inline-six cylinder engine. This engine is a marvel of modern engineering, featuring direct injection, a twin-scroll turbocharger, and an intercooler. The inline-six configuration provides inherent smoothness and balance, contributing to a refined driving experience. The “EQ Boost” system adds a 48-volt mild-hybrid system, integrating a 21 horsepower electric motor between the engine and the 9G-TRONIC automatic transmission. This system allows for features like extended coasting, electric assist during acceleration, and a smoother start/stop function, improving both fuel efficiency and responsiveness. The 9G-TRONIC transmission itself is a nine-speed automatic known for its smooth shifts and wide gear ratio spread, optimizing for both fuel economy and performance.
Driving Characteristics
The E 450 Cabriolet delivers a compelling driving experience. The combination of the 362 horsepower engine and the 9G-TRONIC transmission results in a 0-60 mph time of 5.2 seconds. While not a dedicated sports car, the E 450 offers ample power for confident overtaking and enjoyable cruising. The EQ Boost system provides an immediate boost of torque, enhancing responsiveness. Compared to the E 350 Cabriolet, the E 450 offers a noticeably more powerful and refined experience. The automatic transmission is well-tuned, providing seamless gear changes and contributing to a relaxed driving style. The rear-wheel drive configuration provides a balanced feel, although it can be less forgiving in slippery conditions than all-wheel drive options available on other E-Class models.
Equipment & Trim Levels
The E 450 Cabriolet came standard with a generous array of features, including leather upholstery, heated and ventilated front seats, a premium sound system, and a comprehensive suite of driver-assistance technologies. The infotainment system featured a large touchscreen display with Mercedes-Benz’s MBUX interface, offering voice control and intuitive navigation. Optional extras included features like Air Balance fragrance system, multi-contour seats with massage function, and advanced driver-assistance packages. Interior trim options ranged from wood veneers to aluminum accents, allowing buyers to personalize the cabin to their preferences. The Cabriolet’s soft top was available in a variety of colors and could be operated at speeds up to 31 mph.
Chassis & Braking
The A238 E-Class Cabriolet utilizes a sophisticated chassis design. The front suspension features a multi-link setup with coil springs, while the rear suspension employs a multi-link independent suspension. Optional air suspension was available, providing adjustable ride height and damping for enhanced comfort and handling. The braking system consists of ventilated discs on all four wheels, providing ample stopping power. Standard safety features included ABS, electronic stability control, and a suite of airbags. The steering system is a speed-sensitive power steering rack and pinion, offering precise and responsive control.
Market Reception & Comparison
The E 450 Cabriolet was generally well-received by automotive critics. Reviewers praised its luxurious interior, refined driving experience, and advanced technology. The mild-hybrid system was lauded for its contribution to fuel efficiency and responsiveness. Compared to competitors like the BMW 4 Series Convertible and the Audi A5 Cabriolet, the E 450 was often seen as offering a more comfortable and technologically advanced experience. Fuel economy figures of around 25 mpg combined were competitive for its class. Reliability reports have been generally positive, although some owners have reported minor issues with the infotainment system.
Legacy
The Mercedes-Benz E 450 Cabriolet (A238) represents a high point in the evolution of the E-Class convertible. The combination of a powerful and efficient engine, a luxurious interior, and advanced technology has ensured its continued desirability in the used car market. The M 256 engine is known for its durability and relatively low maintenance costs. While the mild-hybrid system adds some complexity, it has proven to be reliable in most cases. As a modern classic, the E 450 Cabriolet offers a compelling blend of luxury, performance, and open-air enjoyment, making it a sought-after vehicle for discerning buyers.
