The Mercedes-Benz E-Class Cabriolet A238, specifically the E 450 4MATIC variant produced from 2020 to 2023, represents a sophisticated blend of luxury, performance, and modern technology within the mid-size convertible segment. This facelifted model, part of the W238 generation, introduced significant updates to styling, technology, and powertrain options. The E 450 4MATIC, positioned as a premium offering within the E-Class Cabriolet range, featured a mild-hybrid system (EQ Boost) paired with a potent inline-six engine and a nine-speed automatic transmission, delivering a refined driving experience and enhanced fuel efficiency. It aimed to appeal to buyers seeking a luxurious open-air experience without sacrificing performance or advanced features.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-Class |
| Generation | E-Class Cabrio (A238, facelift 2020) |
| Type (Engine) | E 450 (367 Hp) EQ Boost 4MATIC 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) | 11.2-11.9 l/100 km (21 – 19.8 US mpg) |
| Fuel consumption (extra urban) | 6.4-6.9 l/100 km (36.8 – 34.1 US mpg) |
| Fuel consumption (combined) | 8.2-8.7 l/100 km (28.7 – 27 US mpg) |
| CO2 emissions | 187-199 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.2 sec |
| Acceleration 0 – 62 mph | 5.2 sec |
| Acceleration 0 – 60 mph | 4.9 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | EURO 6d-ISC-FCM |
| Weight-to-power ratio | 5.4 kg/Hp |
| Weight-to-torque ratio | 3.9 kg/Nm |
| Gross battery capacity | 0.9 kWh |
| Battery voltage | 48 V |
| Battery technology | Lithium-ion (Li-Ion) |
| Electric motor power | 22 Hp |
| Electric motor Torque | 250 Nm (184.39 lb.-ft.) |
| Power | 367 Hp |
| Torque | 500 Nm @ 1600-4500 rpm (368.78 lb.-ft. @ 1600-4500 rpm) |
| 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.) |
| Fuel injection system | Direct injection |
| Engine oil capacity | 8.5 l (8.98 US qt | 7.48 UK qt) |
| Kerb Weight | 1965 kg (4332.08 lbs.) |
| Max. weight | 2550 kg (5621.79 lbs.) |
| Max load | 585 kg (1289.7 lbs.) |
| Trunk (boot) space – minimum | 285 l (10.06 cu. ft.) |
| Trunk (boot) space – maximum | 360 l (12.71 cu. ft.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4835 mm (190.35 in.) |
| Width | 1860 mm (73.23 in.) |
| Width including mirrors | 2055 mm (80.91 in.) |
| Height | 1430 mm (56.3 in.) |
| Wheelbase | 2873 mm (113.11 in.) |
| Front track | 1605 mm (63.19 in.) |
| Rear track | 1609 mm (63.35 in.) |
| Ride height (ground clearance) | 98 mm (3.86 in.) |
| Gears | 9 |
| Gearbox type | Automatic (9G-TRONIC) |
INTRODUCTION
The A238 E-Class Cabriolet, particularly the E 450 4MATIC facelift introduced in 2020, builds upon the success of its predecessor (A238 pre-facelift) by incorporating updated styling cues, enhanced technology, and a more refined powertrain. Positioned above the E 350 variants, the E 450 4MATIC served as a near-top-of-the-line offering, bridging the gap between the mainstream models and the high-performance AMG variants. The facelift brought a more modern aesthetic with revised headlights, taillights, and front and rear bumpers. The E 450 4MATIC’s key feature was its integration of a 48-volt mild-hybrid system, contributing to improved fuel economy and smoother operation. It was primarily marketed towards buyers in Europe, North America, and Asia who desired a luxurious and capable open-top grand tourer.
Powertrain & Engine Architecture
At the heart of the E 450 4MATIC lies the M 256 engine, a 3.0-liter inline-six cylinder engine featuring direct injection and a twin-scroll turbocharger. This engine produces 367 horsepower and 500 Nm (368.78 lb.-ft.) of torque, available from a low 1600 rpm to 4500 rpm, providing strong and consistent power delivery. The M 256 is notable for its innovative cylinder head design with the spark plugs positioned between the valves, optimizing combustion efficiency. The EQ Boost system adds a 22 horsepower electric motor integrated into the powertrain, providing an additional boost during acceleration and enabling a smoother start/stop function. This mild-hybrid system utilizes a 48-volt lithium-ion battery. The engine is mated to Mercedes-Benz’s 9G-TRONIC nine-speed automatic transmission, known for its smooth shifts and wide gear ratios. This transmission is specifically tuned to work in conjunction with the EQ Boost system for optimal performance and efficiency.
Driving Characteristics
The E 450 4MATIC Cabriolet delivers a refined and comfortable driving experience. The combination of the inline-six engine, EQ Boost, and 9G-TRONIC transmission results in brisk acceleration – 0 to 60 mph in approximately 4.9 seconds. The 4MATIC all-wheel-drive system provides excellent traction in various weather conditions, enhancing stability and confidence. Compared to the E 350 variants, the E 450 offers noticeably more power and torque, resulting in quicker acceleration and more effortless highway cruising. While not as overtly sporty as the AMG models, the E 450 provides a satisfying balance between performance and comfort. The gear ratios are optimized for both fuel efficiency and responsive acceleration, with the lower gears providing strong pull for overtaking maneuvers and the higher gears allowing for relaxed cruising at highway speeds. The mild-hybrid system contributes to a near-silent start-up and smooth transitions between engine operation and electric assistance.
Equipment & Trim Levels
The E 450 4MATIC Cabriolet came standard with a comprehensive array of luxury features. Interior appointments included premium leather upholstery, wood trim, and ambient lighting. Standard technology included the Mercedes-Benz User Experience (MBUX) infotainment system with a large touchscreen display, smartphone integration (Apple CarPlay and Android Auto), and a premium sound system. Safety features included automatic emergency braking, lane-keeping assist, and adaptive cruise control. Optional extras included air suspension (AIRMATIC), a head-up display, massaging seats, and a Burmester surround sound system. Trim levels were generally differentiated by the choice of interior materials, exterior styling packages, and the inclusion of optional equipment bundles.
Chassis & Braking
The E-Class Cabriolet utilizes a sophisticated chassis design featuring a multi-link independent suspension at all four corners. The suspension is tuned to provide a comfortable ride while maintaining good handling characteristics. The 4MATIC all-wheel-drive system distributes power between the front and rear axles as needed, optimizing traction and stability. Braking duties are handled by ventilated disc brakes on all four wheels, providing ample stopping power. The E 450 4MATIC typically featured larger brake rotors compared to the base E 350 models. Standard safety features included ABS (Anti-lock Braking System), Electronic Stability Program (ESP), and traction control. Optional air suspension (AIRMATIC) allowed drivers to adjust the ride height and damping characteristics for a more customized driving experience.
Market Reception & Comparison
The E 450 4MATIC Cabriolet was generally well-received by automotive critics. Reviewers praised its refined powertrain, comfortable ride, and luxurious interior. The mild-hybrid system was lauded for its contribution to improved fuel economy and smoother operation. Compared to the E 350 Cabriolet, the E 450 offered a significant performance upgrade, justifying its higher price tag for buyers seeking more power. However, some critics noted that the E 450 lacked the outright sportiness of the AMG variants. Fuel economy figures were competitive for the segment, averaging around 28.7 mpg combined. Reliability reports have been generally positive, with the M 256 engine proving to be a robust and dependable unit.
Legacy
The E 450 4MATIC Cabriolet represents a significant step forward in the evolution of the E-Class Cabriolet. Its integration of mild-hybrid technology demonstrated Mercedes-Benz’s commitment to improving fuel efficiency and reducing emissions. The M 256 engine has become a cornerstone of Mercedes-Benz’s powertrain lineup, known for its smooth operation and strong performance. On the used car market, the A238 E 450 4MATIC Cabriolet holds its value well, appealing to buyers seeking a luxurious and well-equipped convertible with a proven track record of reliability. Its combination of performance, comfort, and technology ensures its continued desirability for years to come.
